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    524 Products
    About Threaded Inserts
    industrial info icon

    Choose the right threaded insert for your application and learn how to install it securely.

    Helical Threaded Inserts

    Image of Product. Pronged. Bottom orientation. Threaded Inserts. Helical Threaded Inserts, Pronged.

    Pronged

    Restore, reinforce, or create threads in metal. The tough coils on these inserts expand once installed to anchor in a tapped hole. Also known as Heli-Coil inserts, they're often used in engine heads and machinery housings where strong connections are critical. Unlike threadlocking inserts, you can remove and reuse them without them losing their strength.
    Installation requires a drill bit, a helical insert tap, and an installation tool.
    Pronged—The prong attaches to an installation tool for precise control as you drive inserts in. Remove the prong with a punch or break-off tool before inserting a screw.
    18-8 Stainless Steel—The choice for wet and outdoor environments, these inserts resist rust and mild chemicals.
    Inserts
    Through-Hole
    Taps
    Closed-End
    Hole Taps
    Installation
    Tools
    Prong
    Break-Off Tools
    Inserts with
    Installation Tools
    Thread
    Size
    Installed
    Lg.
    Drill Bit
    Size
    For Max.
    Hole Dia.
    Specs.
    Met
    Pkg.
    Qty.
    Pkg.
    Each
    Each
    Each
    Each
    No. of Inserts
    Included
    Each
    Pronged
     
    18-8 Stainless Steel
    2-56
    0.086"41 Ga.
    0.096"MS1220951091732A2030000091709A09800000091709A40100000090261A14000000092955A10100000001098356A1110000000
    2-56
    0.129"41 Ga.
    0.096"MS1221351091732A204000091709A0980000091709A4010000090261A1400000092955A1010000001091732A892000000
    2-56
    0.172"41 Ga.
    0.096"MS1221751091732A201000091709A0980000091709A4010000090261A1400000092955A1010000001098356A112000000
    2-56
    0.215"41 Ga.
    0.096"MS1222151091732A202000091709A0980000091709A4010000090261A1400000092955A1010000001098356A113000000
    3-48
    0.099"7/64"
    0.109"MS1221151091732A205000091709A0990000091709A4040000090261A15000000092955A101000000———0
    3-48
    0.148"7/64"
    0.109"MS1221551091732A207000091709A0990000091709A4040000090261A15000000092955A101000000———0
    3-56
    0.099"36 Ga.
    0.107"MS1246701091732A001000091709A0550000091709A4030000090261A10100000092955A101000000———0
    3-56
    0.148"36 Ga.
    0.107"MS1247101091732A003000091709A0550000091709A4030000090261A10100000092955A101000000———0
    4-40
    0.112"31 Ga.
    0.120"MS1220761091732A351000091709A1010000091709A4070000090261A15100000092955A1030000001098356A114000000
    4-40
    0.168"31 Ga.
    0.120"MS1221161091732A285000091709A1010000091709A4070000090261A15100000092955A1030000001091732A89900000
    4-40
    0.224"31 Ga.
    0.120"MS1221561091732A701000091709A1010000091709A4070000090261A15100000092955A1030000001091732A43000000
    4-40
    0.280"31 Ga.
    0.120"MS1221961091732A702000091709A1010000091709A4070000090261A15100000092955A1030000001098356A115000000
    4-40
    0.336"31 Ga.
    0.120"MS122236591732A420000091709A1010000091709A4070000090261A15100000092955A1030000001098356A116000000
    4-48
    0.112"31 Ga.
    0.120"MS1246711091732A005000091709A0570000091709A4100000090261A10200000092955A103000000———0
    4-48
    0.168"31 Ga.
    0.120"MS1247111091732A007000091709A0570000091709A4100000090261A10200000092955A103000000———0
    5-40
    0.125"29 Ga.
    0.136"MS1220771091732A009000091709A0610000091709A4130000090261A10400000092955A103000000———0
    5-40
    0.188"29 Ga.
    0.136"MS1221171091732A010000091709A0610000091709A4130000090261A10400000092955A103000000———0
    5-40
    0.250"29 Ga.
    0.136"MS1221571091732A704000091709A0610000091709A4130000090261A10400000092955A103000000———0
    6-32
    0.138"25 Ga.
    0.150"MS1220781091732A355000091709A1020000091709A4160000090261A15200000092955A105000001091732A44000000
    6-32
    0.207"25 Ga.
    0.150"MS1221181091732A286000091709A1020000091709A4160000090261A15200000092955A105000001091732A90600000
    6-32
    0.276"25 Ga.
    0.150"MS1221581091732A707000091709A1020000091709A4160000090261A15200000092955A105000001091732A45000000
    6-32
    0.345"25 Ga.
    0.150"MS1221981091732A708000091709A1020000091709A4160000090261A15200000092955A105000001098356A117000000
    6-32
    0.414"25 Ga.
    0.150"MS122238591732A425000091709A1020000091709A4160000090261A15200000092955A105000001098356A118000000
    6-40
    0.138"25 Ga.
    0.150"MS1246531091732A012000091709A0630000091709A4190000090261A10600000092955A10500000———0
    6-40
    0.207"25 Ga.
    0.150"MS1246931091732A014000091709A0630000091709A4190000090261A10600000092955A10500000———0
    6-40
    0.276"25 Ga.
    0.150"MS1247331091732A710000091709A0630000091709A4190000090261A10600000092955A10500000———0
    8-32
    0.164"16 Ga.
    0.177"MS1220791091732A359000091709A1030000091709A4220000090261A15300000092955A107000001091732A46000000
    8-32
    0.246"16 Ga.
    0.177"MS1221191091732A287000091709A1030000091709A4220000090261A15300000092955A107000001091732A91000000
    8-32
    0.328"16 Ga.
    0.177"MS1221591091732A713000091709A1030000091709A4220000090261A15300000092955A107000001091732A47000000
    8-32
    0.410"16 Ga.
    0.177"MS1221991091732A714000091709A1030000091709A4220000090261A15300000092955A107000001098356A11900000
    8-32
    0.492"16 Ga.
    0.177"MS122239591732A415000091709A1030000091709A4220000090261A15300000092955A107000001098356A12100000
    8-36
    0.164"16 Ga.
    0.177"MS1246541091732A017000091709A0650000091709A4250000090261A14900000092955A10700000———0
    8-36
    0.246"16 Ga.
    0.177"MS1246941091732A019000091709A0650000091709A4250000090261A14900000092955A10700000———0
    8-36
    0.328"16 Ga.
    0.177"MS1247341091732A716000091709A0650000091709A4250000090261A14900000092955A10700000———0
    10-24
    0.190"5 Ga.
    0.206"MS1220801091732A364000091709A1040000091709A4280000090261A15400000092955A109000001098356A12200000
    10-24
    0.285"5 Ga.
    0.206"MS1221201091732A211000091709A1040000091709A4280000090261A15400000092955A109000001091732A91400000
    10-24
    0.380"5 Ga.
    0.206"MS1221601091732A719000091709A1040000091709A4280000090261A15400000092955A109000001091732A48000000
    10-24
    0.475"5 Ga.
    0.206"MS122200591732A720000091709A1040000091709A4280000090261A15400000092955A109000001098356A12300000
    10-24
    0.570"13/64"
    0.203"MS1222401091732A223000091709A1040000091709A4280000090261A15400000092955A109000001098356A12400000
    10-32
    0.190"13/64"
    0.203"MS1246551091732A511000091709A1510000091709A4310000090261A16100000092955A109000001091732A49000000
    10-32
    0.285"13/64"
    0.203"MS1246951091732A231000091709A1510000091709A4310000090261A16100000092955A109000001091732A91600000
    10-32
    0.380"13/64"
    0.203"MS1247351091732A725000091709A1510000091709A4310000090261A16100000092955A109000001091732A51000000
    10-32
    0.475"13/64"
    0.203"MS1247751091732A726000091709A1510000091709A4310000090261A16100000092955A109000001098356A12500000
    10-32
    0.570"13/64"
    0.203"MS1248151091732A727000091709A1510000091709A4310000090261A16100000092955A109000001098356A12600000
    1/4"-20
    0.250"H
    0.266"MS1220811091732A368000091709A1050000091709A4370000090261A15500000092955A111000001091732A52000000
    1/4"-20
    0.375"H
    0.266"MS1221211091732A212000091709A1050000091709A4370000090261A15500000092955A111000001091732A92200000
    1/4"-20
    0.500"H
    0.266"MS1221611091732A734000091709A1050000091709A4370000090261A15500000092955A111000001091732A53000000
    1/4"-20
    0.625"H
    0.266"MS1222011091732A735000091709A1050000091709A4370000090261A15500000092955A111000001098356A12700000
    1/4"-20
    0.750"H
    0.266"MS1222411091732A736000091709A1050000091709A4370000090261A15500000092955A111000001098356A12800000
    1/4"-28
    0.250"6.7 mm
    6.7 mmMS1246561091732A515000091709A1520000091709A4400000090261A16200000092955A111000001098356A12900000
    1/4"-28
    0.375"6.7 mm
    6.7 mmMS1246961091732A232000091709A1520000091709A4400000090261A16200000092955A111000001091732A92400000
    1/4"-28
    0.500"6.7 mm
    6.7 mmMS1247361091732A737000091709A1520000091709A4400000090261A16200000092955A111000001098356A13100000
    1/4"-28
    0.625"6.7 mm
    6.7 mmMS1247761091732A738000091709A1520000091709A4400000090261A16200000092955A111000001098356A13200000
    5/16"-18
    0.312"Q
    0.332"MS1220821091732A372000091709A1060000091709A4430000090261A15600000092955A1130000001091732A54000000
    5/16"-18
    0.469"Q
    0.332"MS1221221091732A213000091709A1060000091709A4430000090261A15600000092955A1130000001091732A92600000
    5/16"-18
    0.625"Q
    0.332"MS1221621091732A740000091709A1060000091709A4430000090261A15600000092955A1130000001091732A55000000
    5/16"-18
    0.781"Q
    0.332"MS1222021091732A224000091709A1060000091709A4430000090261A15600000092955A1130000001098356A13300000
    5/16"-18
    0.938"Q
    0.332"MS122242591732A741000091709A1060000091709A4430000090261A15600000092955A1130000001098356A13400000
    5/16"-24
    0.312"21/64"
    0.328"MS1246571091732A519000091709A1530000091709A4460000090261A16300000092955A1210000001098356A13500000
    5/16"-24
    0.469"21/64"
    0.328"MS1246971091732A233000091709A1530000091709A4460000090261A16300000092955A1210000001091732A92800000
    5/16"-24
    0.625"21/64"
    0.328"MS1247371091732A743000091709A1530000091709A4460000090261A16300000092955A1210000001098356A13600000
    5/16"-24
    0.781"21/64"
    0.328"MS124777591732A744000091709A1530000091709A4460000090261A16300000092955A121000000———0
    3/8"-16
    0.375"X
    0.397"MS1220831091732A376000091709A1070000091709A4490000090261A15700000092955A1150000001091732A56000000
    3/8"-16
    0.562"X
    0.397"MS1221231091732A214000091709A1070000091709A4490000090261A15700000092955A1150000001091732A93000000
    3/8"-16
    0.750"X
    0.397"MS122163591732A746000091709A1070000091709A4490000090261A15700000092955A115000000591732A57000000
    3/8"-16
    0.938"X
    0.397"MS122203591732A747000091709A1070000091709A4490000090261A15700000092955A115000000598356A13700000
    3/8"-16
    1.125"X
    0.397"MS1222431091732A225000091709A1070000091709A4490000090261A15700000092955A115000000598356A138000000
    3/8"-24
    0.375"25/64"
    0.391"MS1246581091732A524000091709A1540000091709A4520000090261A16400000092955A123000000———0
    3/8"-24
    0.562"25/64"
    0.391"MS1246981091732A234000091709A1540000091709A4520000090261A16400000092955A1230000001091732A93200000
    3/8"-24
    0.750"25/64"
    0.391"MS124738591732A749000091709A1540000091709A4520000090261A16400000092955A123000000598356A13900000
    3/8"-24
    0.938"25/64"
    0.391"MS124778191732A750000091709A1540000091709A4520000090261A16400000092955A123000000———0
    7/16"-14
    0.438"29/64"
    0.453"MS1220841091732A381000091709A1080000091709A4550000090261A15800000092955A2020000001098356A14100000
    7/16"-14
    0.656"29/64"
    0.453"MS1221241091732A215000091709A1080000091709A4550000090261A15800000092955A2020000001091732A93400000
    7/16"-14
    0.875"29/64"
    0.453"MS122164591732A752000091709A1080000091709A4550000090261A15800000092955A202000000598356A142000000
    7/16"-20
    0.438"29/64"
    0.453"MS1246591091732A528000091709A1550000091709A4580000090261A16500000092955A2030000001098356A14300000
    7/16"-20
    0.656"29/64"
    0.453"MS1246991091732A235000091709A1550000091709A4580000090261A16500000092955A2030000001091732A93600000
    7/16"-20
    0.875"29/64"
    0.453"MS124739591732A755000091709A1550000091709A4580000090261A16500000092955A203000000———0
    1/2"-13
    0.500"17/32"
    0.531"MS1220851091732A385000091709A1090000091709A4610000090261A15900000092955A1190000001091732A58000000
    1/2"-13
    0.750"17/32"
    0.531"MS122125591732A216000091709A1090000091709A4610000090261A15900000092955A119000000591732A93800000
    1/2"-13
    1"17/32"
    0.531"MS122165591732A815000091709A1090000091709A4610000090261A15900000092955A119000000591732A59000000
    1/2"-13
    1.250"17/32"
    0.531"MS122205591732A816000091709A1090000091709A4610000090261A15900000092955A119000000598356A144000000
    1/2"-13
    1.500"33/64"
    0.516"MS122245591732A226000091709A1090000091709A4610000090261A15900000092955A119000000598356A145000000
    1/2"-20
    0.500"33/64"
    0.516"MS1246601091732A533000091709A1560000091709A4640000090261A16600000092955A1270000001098356A146000000
    1/2"-20
    0.750"33/64"
    0.516"MS124700591732A236000091709A1560000091709A4640000090261A16600000092955A127000000591732A94000000
    1/2"-20
    1"33/64"
    0.516"MS124740591732A758000091709A1560000091709A4640000090261A16600000092955A127000000598356A147000000
    1/2"-20
    1.250"33/64"
    0.516"MS124780191732A759000091709A1560000091709A4640000090261A16600000092955A127000000———0
    9/16"-12
    0.562"19/32"
    0.594"MS122086591732A3890000091709A1110000091709A46700000090261A17100000———0———0
    9/16"-12
    0.844"19/32"
    0.594"MS122126591732A2170000091709A1110000091709A46700000090261A17100000———0691732A317000000
    9/16"-18
    0.562"37/64"
    0.578"MS124661591732A537000091709A1570000091709A47000000090261A112000000———0———0
    9/16"-18
    0.844"37/64"
    0.578"MS124701591732A237000091709A1570000091709A47000000090261A112000000———0691732A337000000
    5/8"-11
    0.625"21/32"
    0.656"MS122087591732A394000091709A1120000091709A47300000090261A17200000———0698356A148000000
    5/8"-11
    0.938"21/32"
    0.656"MS122127191732A218000091709A1120000091709A47300000090261A17200000———0691732A018000000
    5/8"-11
    1.250"21/32"
    0.656"MS122167191732A395000091709A1120000091709A47300000090261A17200000———0698356A149000000
    5/8"-11
    1.562"21/32"
    0.656"MS122207591732A227000091709A1120000091709A47300000090261A17200000———0———0
    5/8"-18
    0.625"41/64"
    0.641"MS124662191732A541000091709A1580000091709A47600000090261A182000000———01098356A151000000
    5/8"-18
    0.938"41/64"
    0.641"MS124702191732A238000091709A1580000091709A47600000090261A182000000———0691732A038000000
    3/4"-10
    0.750"25/32"
    0.781"MS122088191732A398000091709A11300000091709A47900000090261A17300000———0598356A152000000
    3/4"-10
    1.125"25/32"
    0.781"MS122128191732A219000091709A11300000091709A47900000090261A17300000———0491732A319000000
    3/4"-10
    1.500"25/32"
    0.781"MS122168191732A222000091709A11300000091709A47900000090261A17300000———0598356A153000000
    3/4"-16
    0.750"49/64"
    0.766"MS124663191732A545000091709A15900000091709A48200000090261A183000000———0———0
    3/4"-16
    1.125"49/64"
    0.766"MS124703191732A239000091709A15900000091709A48200000090261A183000000———0491732A339000000
    7/8"-9
    0.875"29/32"
    0.906"MS122089191732A403000091709A11400000091709A48500000090261A17400000———0———0
    7/8"-9
    1.312"29/32"
    0.906"MS122129191732A220000091709A11400000091709A48500000090261A17400000———0691732A320000000
    7/8"-14
    0.875"57/64"
    0.891"MS124664191732A549000091709A16100000091709A48800000090261A114000000———0———0
    7/8"-14
    1.312"57/64"
    0.891"MS124704191732A240000091709A16100000091709A48800000090261A114000000———0691732A340000000
    1"-8
    1"1 1/32"
    1.031"MS122090191732A407000091709A11500000091709A49100000090261A17500000———0———0
    1"-8
    1.500"1 1/32"
    1.031"MS122130191732A221000091709A11500000091709A49100000090261A17500000———0691732A321000000
    1"-12
    1"1 1/32"
    1.031"MS124651191732A029000091709A07300000091709A49700000090261A176000000———0———0
    1"-12
    1.500"1 1/32"
    1.031"MS124691191732A030000091709A07300000091709A49700000090261A176000000———0691732A123000000
    1"-14
    1"1 1/32"
    1.031"MS124665191732A025000091709A07100000091709A49400000090261A177000000———0———0
    1"-14
    1.500"1 1/32"
    1.031"MS124705191732A027000091709A07100000091709A49400000090261A177000000———0691732A121000000
    1 1/8"-7
    1.125"1 11/64"
    1.172"MS122091191732A141000091709A11600000091709A500000000———0———0———0
    1 1/8"-7
    1.688"1 11/64"
    1.172"MS122131191732A143000091709A11600000091709A500000000———0———0591732A322000000
    1 1/8"-12
    1.125"1 5/32"
    1.156"MS124666191732A031000091709A07500000091709A503000000———0———0———0
    1 1/8"-12
    1.688"1 5/32"
    1.156"MS124706191732A034000091709A07500000091709A503000000———0———0591732A125000000
    1 1/4"-7
    1.250"1 19/64"
    1.297"MS122092191732A032000091709A11700000091709A50600000090261A124000000———0———0
    1 1/4"-7
    1.875"1 19/64"
    1.297"MS122132191732A037000091709A11700000091709A50600000090261A124000000———0491732A323000000
    1 1/4"-12
    1.250"1 9/32"
    1.281"MS124667191732A0390000091709A07700000091709A50900000090261A167000000———0———0
    1 1/4"-12
    1.875"1 9/32"
    1.281"MS124707191732A0410000091709A07700000091709A50900000090261A167000000———0491732A129000000
    1 1/2"-6
    1.500"1 35/64"
    1.547"MS122094191732A0500000091709A11900000091709A518000000———0———0———0
    1 1/2"-6
    2.250"1 35/64"
    1.547"MS122134191732A0520000091709A11900000091709A518000000———0———0491732A325000000
    1 1/2"-12
    2.250"1 17/32"
    1.531"MS124709191732A0540000091709A08300000091709A521000000———0———0491732A13700000000
     
    Extraction Tools

    Screw-Locking Helical Threaded Inserts

    Image of Product. Pronged. Bottom orientation. Threaded Inserts. Screw-Locking Helical Threaded Inserts, Pronged.

    Pronged

    The irregularly shaped threads tightly grip screws to prevent them from loosening or backing out under vibration. Use these inserts to create or repair threads in pumps and other machinery that shakes and rattles. Also known as Heli-Coil inserts.
    Installation requires a drill bit, a helical insert tap, and an installation tool.
    Pronged—The prong attaches to an installation tool for precise control as you drive inserts in. Remove the prong with a punch or break-off tool before inserting a screw.
    18-8 Stainless Steel—The choice for wet and outdoor environments, these inserts resist rust and mild chemicals.
    Inserts
    Through-Hole
    Taps
    Closed-End
    Hole Taps
    Installation
    Tools
    Prong
    Break-Off Tools
    Thread
    Size
    Installed
    Lg.
    Drill Bit
    Size
    For Max.
    Hole Dia.
    Specs. Met
    Pkg.
    Qty.
    Pkg.
    Each
    Each
    Each
    Each
    Pronged
     
    18-8 Stainless Steel
    2-56
    0.086"41 Ga.
    0.096"NASM21209, MS21209C02101090296A0940000091709A09800000091709A40100000090261A14000000092955A1010000000
    2-56
    0.129"41 Ga.
    0.096"NASM21209, MS21209C02151090296A095000091709A0980000091709A4010000090261A1400000092955A101000000
    2-56
    0.172"41 Ga.
    0.096"NASM21209, MS21209C02201090296A097000091709A0980000091709A4010000090261A1400000092955A101000000
    2-56
    0.215"41 Ga.
    0.096"NASM21209, MS21209C0225190296A099000091709A0980000091709A4010000090261A1400000092955A101000000
    3-48
    0.099"7/64"
    0.109"NASM21209, MS21209C0310590296A184000091709A0990000091709A4040000090261A15000000092955A101000000
    3-48
    0.148"7/64"
    0.109"NASM21209, MS21209C03151090296A098000091709A0990000091709A4040000090261A15000000092955A101000000
    3-56
    0.099"36 Ga.
    0.107"NASM21209, MS21209F03101090296A012000091709A0550000091709A4030000090261A10100000092955A101000000
    3-56
    0.148"36 Ga.
    0.107"NASM21209, MS21209F0315590296A185000091709A0550000091709A4030000090261A10100000092955A101000000
    4-40
    0.112"31 Ga.
    0.120"NASM21209, MS21209C04101090296A101000091709A1010000091709A4070000090261A15100000092955A103000000
    4-40
    0.168"31 Ga.
    0.120"NASM21209, MS21209C04151090296A102000091709A1010000091709A4070000090261A15100000092955A103000000
    4-40
    0.224"31 Ga.
    0.120"NASM21209, MS21209C0420590296A103000091709A1010000091709A4070000090261A15100000092955A103000000
    4-40
    0.280"31 Ga.
    0.120"NASM21209, MS21209C0425590296A104000091709A1010000091709A4070000090261A15100000092955A103000000
    4-40
    0.336"31 Ga.
    0.120"NASM21209, MS21209C0430190296A445000091709A1010000091709A4070000090261A15100000092955A103000000
    4-48
    0.112"31 Ga.
    0.120"NASM21209, MS21209F04101090296A016000091709A0570000091709A4100000090261A10200000092955A103000000
    4-48
    0.168"31 Ga.
    0.120"NASM21209, MS21209F04151090296A018000091709A0570000091709A4100000090261A10200000092955A103000000
    5-40
    0.125"29 Ga.
    0.136"NASM21209, MS21209C05101090296A020000091709A0610000091709A4130000090261A10400000092955A103000000
    5-40
    0.188"29 Ga.
    0.136"NASM21209, MS21209C05151090296A022000091709A0610000091709A4130000090261A10400000092955A103000000
    5-40
    0.250"29 Ga.
    0.136"NASM21209, MS21209C0520590296A023000091709A0610000091709A4130000090261A10400000092955A103000000
    6-32
    0.138"25 Ga.
    0.150"NASM21209, MS21209C06101090296A106000091709A1020000091709A4160000090261A15200000092955A10500000
    6-32
    0.207"25 Ga.
    0.150"NASM21209, MS21209C06151090296A107000091709A1020000091709A4160000090261A15200000092955A10500000
    6-32
    0.276"25 Ga.
    0.150"NASM21209, MS21209C0620590296A108000091709A1020000091709A4160000090261A15200000092955A10500000
    6-32
    0.345"25 Ga.
    0.150"NASM21209, MS21209C0625590296A109000091709A1020000091709A4160000090261A15200000092955A10500000
    6-32
    0.414"25 Ga.
    0.150"NASM21209, MS21209C0630190296A450000091709A1020000091709A4160000090261A15200000092955A10500000
    6-40
    0.138"25 Ga.
    0.150"NASM21209, MS21209F06101090296A024000091709A0630000091709A4190000090261A10600000092955A10500000
    6-40
    0.207"25 Ga.
    0.150"NASM21209, MS21209F0615590296A189000091709A0630000091709A4190000090261A10600000092955A10500000
    6-40
    0.276"25 Ga.
    0.150"NASM21209, MS21209F0620590296A190000091709A0630000091709A4190000090261A10600000092955A10500000
    8-32
    0.164"16 Ga.
    0.177"NASM21209, MS21209C08101090296A111000091709A1030000091709A4220000090261A15300000092955A10700000
    8-32
    0.246"16 Ga.
    0.177"NASM21209, MS21209C08151090296A112000091709A1030000091709A4220000090261A15300000092955A10700000
    8-32
    0.328"16 Ga.
    0.177"NASM21209, MS21209C08201090296A551000091709A1030000091709A4220000090261A15300000092955A10700000
    8-32
    0.410"16 Ga.
    0.177"NASM21209, MS21209C0825190296A552000091709A1030000091709A4220000090261A15300000092955A10700000
    8-32
    0.492"16 Ga.
    0.177"NASM21209, MS21209C0830190296A440000091709A1030000091709A4220000090261A15300000092955A10700000
    8-36
    0.164"16 Ga.
    0.177"NASM21209, MS21209F08101090296A028000091709A0650000091709A4250000090261A14900000092955A10700000
    8-36
    0.246"16 Ga.
    0.177"NASM21209, MS21209F08151090296A030000091709A0650000091709A4250000090261A14900000092955A10700000
    8-36
    0.328"16 Ga.
    0.177"NASM21209, MS21209F0820590296A193000091709A0650000091709A4250000090261A14900000092955A10700000
    10-24
    0.190"5 Ga.
    0.206"NASM21209, MS21209C1-101090296A116000091709A1040000091709A4280000090261A15400000092955A10900000
    10-24
    0.285"5 Ga.
    0.206"NASM21209, MS21209C1-151090296A117000091709A1040000091709A4280000090261A15400000092955A10900000
    10-24
    0.380"5 Ga.
    0.206"NASM21209, MS21209C1-20590296A118000091709A1040000091709A4280000090261A15400000092955A10900000
    10-24
    0.475"5 Ga.
    0.206"NASM21209, MS21209C1-25190296A119000091709A1040000091709A4280000090261A15400000092955A10900000
    10-32
    0.190"13/64"
    0.203"MS21209F1-101090296A201000091709A1510000091709A4310000090261A16100000092955A10900000
    10-32
    0.285"13/64"
    0.203"NASM21209, MS21209F1-151090296A202000091709A1510000091709A4310000090261A16100000092955A10900000
    10-32
    0.380"13/64"
    0.203"NASM21209, MS21209F1-201090296A554000091709A1510000091709A4310000090261A16100000092955A10900000
    10-32
    0.475"13/64"
    0.203"NASM21209, MS21209F1-25190296A105000091709A1510000091709A4310000090261A16100000092955A10900000
    10-32
    0.570"13/64"
    0.203"NASM21209, MS21209F1-30190296A555000091709A1510000091709A4310000090261A16100000092955A10900000
    12-24
    0.216"1 Ga.
    0.228"NASM21209, MS21209C2-101090296A0320000091709A0670000091709A4340000090261A11000000092955A10900000
    12-24
    0.324"1 Ga.
    0.228"NASM21209, MS21209C2-151090296A0340000091709A0670000091709A4340000090261A11000000092955A10900000
    1/4"-20
    0.250"H
    0.266"NASM21209, MS21209C4-101090296A121000091709A1050000091709A4370000090261A15500000092955A11100000
    1/4"-20
    0.375"H
    0.266"NASM21209, MS21209C4-151090296A122000091709A1050000091709A4370000090261A15500000092955A11100000
    1/4"-20
    0.500"H
    0.266"NASM21209, MS21209C4-201090296A557000091709A1050000091709A4370000090261A15500000092955A11100000
    1/4"-20
    0.625"H
    0.266"NASM21209, MS21209C4-25190296A558000091709A1050000091709A4370000090261A15500000092955A11100000
    1/4"-20
    0.750"H
    0.266"NASM21209, MS21209C4-30190296A559000091709A1050000091709A4370000090261A15500000092955A11100000
    1/4"-28
    0.250"6.7 mm
    6.7 mmNASM21209, MS21209F4-101090296A206000091709A1520000091709A4400000090261A16200000092955A11100000
    1/4"-28
    0.375"6.7 mm
    6.7 mmNASM21209, MS21209F4-151090296A207000091709A1520000091709A4400000090261A16200000092955A11100000
    1/4"-28
    0.500"6.7 mm
    6.7 mmNASM21209, MS21209F4-20590296A208000091709A1520000091709A4400000090261A16200000092955A11100000
    1/4"-28
    0.625"6.7 mm
    6.7 mmNASM21209, MS21209F4-25190296A556000091709A1520000091709A4400000090261A16200000092955A11100000
    5/16"-18
    0.312"Q
    0.332"NASM21209, MS21209C5-101090296A1260000091709A1060000091709A4430000090261A15600000092955A113000000
    5/16"-18
    0.469"Q
    0.332"NASM21209, MS21209C5-151090296A1270000091709A1060000091709A4430000090261A15600000092955A113000000
    5/16"-18
    0.625"Q
    0.332"NASM21209, MS21209C5-20190296A128000091709A1060000091709A4430000090261A15600000092955A113000000
    5/16"-24
    0.312"21/64"
    0.328"NASM21209, MS21209F5-101090296A211000091709A1530000091709A4460000090261A16300000092955A121000000
    5/16"-24
    0.469"21/64"
    0.328"NASM21209, MS21209F5-151090296A212000091709A1530000091709A4460000090261A16300000092955A121000000
    5/16"-24
    0.625"21/64"
    0.328"NASM21209, MS21209F5-20190296A213000091709A1530000091709A4460000090261A16300000092955A121000000
    5/16"-24
    0.781"21/64"
    0.328"NASM21209, MS21209F5-25190296A214000091709A1530000091709A4460000090261A16300000092955A121000000
    3/8"-16
    0.375"X
    0.397"NASM21209, MS21209C6-101090296A1310000091709A1070000091709A4490000090261A15700000092955A115000000
    3/8"-16
    0.562"X
    0.397"NASM21209, MS21209C6-15590296A132000091709A1070000091709A4490000090261A15700000092955A115000000
    3/8"-16
    0.750"X
    0.397"NASM21209, MS21209C6-20190296A133000091709A1070000091709A4490000090261A15700000092955A115000000
    3/8"-24
    0.375"25/64"
    0.391"NASM21209 MS21209F6-10590296A216000091709A1540000091709A4520000090261A16400000092955A123000000
    3/8"-24
    0.562"25/64"
    0.391"NASM21209, MS21209F6-15590296A217000091709A1540000091709A4520000090261A16400000092955A123000000
    3/8"-24
    0.750"25/64"
    0.391"NASM21209, MS21209F6-20190296A218000091709A1540000091709A4520000090261A16400000092955A123000000
    3/8"-24
    0.938"25/64"
    0.391"NASM21209, MS21209F6-25190296A219000091709A1540000091709A4520000090261A16400000092955A123000000
    7/16"-14
    0.438"29/64"
    0.453"NASM21209, MS21209C7-10590296A136000091709A1080000091709A4550000090261A15800000092955A202000000
    7/16"-14
    0.656"29/64"
    0.453"NASM21209, MS21209C7-15590296A137000091709A1080000091709A4550000090261A15800000092955A202000000
    7/16"-14
    0.875"29/64"
    0.453"NASM21209, MS21209C7-20190296A138000091709A1080000091709A4550000090261A15800000092955A202000000
    7/16"-20
    0.438"29/64"
    0.453"NASM21209, MS21209F7-10590296A221000091709A1550000091709A4580000090261A16500000092955A203000000
    7/16"-20
    0.656"29/64"
    0.453"NASM21209, MS21209F7-15590296A222000091709A1550000091709A4580000090261A16500000092955A203000000
    7/16"-20
    0.875"29/64"
    0.453"NASM21209, MS21209F7-20190296A223000091709A1550000091709A4580000090261A16500000092955A203000000
    1/2"-13
    0.500"17/32"
    0.531"NASM21209, MS21209C8-10590296A141000091709A1090000091709A4610000090261A15900000092955A119000000
    1/2"-13
    0.750"17/32"
    0.531"NASM21209, MS21209C8-15590296A142000091709A1090000091709A4610000090261A15900000092955A119000000
    1/2"-13
    1"17/32"
    0.531"NASM21209, MS21209C8-20190296A143000091709A1090000091709A4610000090261A15900000092955A119000000
    1/2"-13
    1.250"17/32"
    0.531"NASM21209, MS21209C8-25190296A144000091709A1090000091709A4610000090261A15900000092955A119000000
    1/2"-20
    0.500"33/64"
    0.516"NASM21209, MS21209F8-10590296A226000091709A1560000091709A4640000090261A16600000092955A127000000
    1/2"-20
    0.750"33/64"
    0.516"NASM21209, MS21209F8-15590296A227000091709A1560000091709A4640000090261A16600000092955A127000000
    1/2"-20
    1"33/64"
    0.516"NASM21209, MS21209F8-20190296A228000091709A1560000091709A4640000090261A16600000092955A127000000
    1/2"-20
    1.250"33/64"
    0.516"NASM21209, MS21209F8-25190296A229000091709A1560000091709A4640000090261A16600000092955A127000000
    9/16"-12
    0.562"19/32"
    0.594"NASM21209, MS21209C9-10190296A140000091709A1110000091709A46700000090261A17100000———0
    9/16"-12
    0.844"19/32"
    0.594"NASM21209, MS21209C9-15190296A147000091709A1110000091709A46700000090261A17100000———0
    9/16"-18
    0.562"37/64"
    0.578"NASM21209, MS21209F9-10190296A231000091709A1570000091709A47000000090261A112000000———0
    9/16"-18
    0.844"37/64"
    0.578"NASM21209, MS21209F9-15190296A232000091709A1570000091709A47000000090261A112000000———0
    5/8"-11
    0.625"21/32"
    0.656"NASM21209, MS21209C1010190296A151000091709A1120000091709A47300000090261A17200000———0
    5/8"-11
    0.938"21/32"
    0.656"NASM21209, MS21209C1015190296A152000091709A1120000091709A47300000090261A17200000———0
    5/8"-11
    1.250"21/32"
    0.656"NASM21209, MS21209C1020190296A153000091709A1120000091709A47300000090261A17200000———0
    5/8"-18
    0.625"41/64"
    0.641"NASM21209, MS21209F1010190296A236000091709A1580000091709A47600000090261A182000000———0
    5/8"-18
    0.938"41/64"
    0.641"NASM21209, MS21209F1015190296A237000091709A1580000091709A47600000090261A182000000———0
    3/4"-10
    0.750"25/32"
    0.781"NASM21209, MS21209C1210190296A156000091709A11300000091709A47900000090261A17300000———0
    3/4"-10
    1.125"25/32"
    0.781"NASM21209, MS21209C1215190296A157000091709A11300000091709A47900000090261A17300000———0
    3/4"-10
    1.500"25/32"
    0.781"NASM21209, MS21209C1220190296A158000091709A11300000091709A47900000090261A17300000———0
    3/4"-16
    0.750"49/64"
    0.766"NASM21209, MS21209F1210190296A241000091709A15900000091709A48200000090261A183000000———0
    3/4"-16
    1.125"49/64"
    0.766"NASM21209, MS21209F1215190296A242000091709A15900000091709A48200000090261A183000000———0
    7/8"-9
    0.875"29/32"
    0.906"NASM21209, MS21209C1410190296A163000091709A11400000091709A48500000090261A17400000———0
    7/8"-14
    0.875"57/64"
    0.891"NASM21209, MS21209F1410190296A2480000091709A16100000091709A48800000090261A114000000———0
    7/8"-14
    1.312"57/64"
    0.891"NASM21209, MS21209F1415190296A247000091709A16100000091709A48800000090261A114000000———0
    1"-8
    1"1 1/32"
    1.031"NASM21209, MS21209C1610190296A166000091709A11500000091709A49100000090261A17500000———0
    1"-8
    1.500"1 1/32"
    1.031"NASM21209, MS21209C1615190296A1670000091709A11500000091709A49100000090261A17500000———0
    1"-12
    1"1 1/32"
    1.031"NASM21209, MS21209F1610190296A0400000091709A07300000091709A49700000090261A176000000———0
    1 1/4"-7
    1.875"1 19/64"
    1.297"NASM21209, MS21209C2015190296A0500000091709A11700000091709A50600000090261A124000000———0
     

    Seize-Resistant Helical Threaded Inserts

    Image of Product. Pronged. Bottom orientation. Threaded Inserts. Seize-Resistant Helical Threaded Inserts, Pronged.

    Pronged

    Install and remove screws repeatedly without sticking or binding. These inserts have a dry-film lubricant on their surface for smooth installation. They're ideal for parts that require frequent disassembly for inspection or repair. Also known as Heli-Coil inserts.
    Installation requires a drill bit, a helical insert tap, and an installation tool.
    Pronged—The prong attaches to an installation tool for precise control as you drive inserts in. Remove the prong with a punch or break-off tool before inserting a screw.
    Dry-Film-Lubricated 18-8 Stainless Steel—The choice for wet and outdoor environments, these inserts resist rust and mild chemicals.
    Inserts
    Through-Hole
    Taps
    Closed-End
    Hole Taps
    Installation
    Tools
    Prong
    Break-Off Tools
    Thread Size
    Installed
    Lg.
    Drill Bit
    Size
    For Max.
    Hole Dia.
    Specs. Met
    Pkg.
    Qty.
    Pkg.
    Each
    Each
    Each
    Each
    Pronged
     
    Dry-Film-Lubricated 18-8 Stainless Steel
    2-56
    0.086"41 Ga.
    0.096"MIL-I-8846, MS122095191000A1100000091709A09800000091709A40100000090261A14000000092955A1010000000
    2-56
    0.129"41 Ga.
    0.096"MIL-I-8846, MS122135191000A113000091709A0980000091709A4010000090261A1400000092955A101000000
    2-56
    0.172"41 Ga.
    0.096"MIL-I-8846, MS122175191000A116000091709A0980000091709A4010000090261A1400000092955A101000000
    4-40
    0.112"31 Ga.
    0.120"MIL-I-8846, MS122076191000A121000091709A1010000091709A4070000090261A15100000092955A103000000
    4-40
    0.168"31 Ga.
    0.120"MIL-I-8846, MS122116191000A124000091709A1010000091709A4070000090261A15100000092955A103000000
    4-40
    0.224"31 Ga.
    0.120"MIL-I-8846, MS122156191000A127000091709A1010000091709A4070000090261A15100000092955A103000000
    6-32
    0.138"25 Ga.
    0.150"MIL-I-8846, MS122078191000A132000091709A1020000091709A4160000090261A15200000092955A10500000
    6-32
    0.207"25 Ga.
    0.150"MIL-I-8846, MS122118191000A135000091709A1020000091709A4160000090261A15200000092955A10500000
    6-32
    0.276"25 Ga.
    0.150"MIL-I-8846, MS122158191000A138000091709A1020000091709A4160000090261A15200000092955A10500000
    10-24
    0.285"5 Ga.
    0.206"MIL-I-8846, MS122120191000A144000091709A1040000091709A4280000090261A15400000092955A10900000
    10-32
    0.190"13/64"
    0.203"MIL-I-8846, MS124655191000A172000091709A1510000091709A4310000090261A16100000092955A10900000
    10-32
    0.285"13/64"
    0.203"MIL-I-8846, MS124695191000A174000091709A1510000091709A4310000090261A16100000092955A10900000
    10-32
    0.380"13/64"
    0.203"MIL-I-8846, MS124735191000A177000091709A1510000091709A4310000090261A16100000092955A10900000
    1/4"-20
    0.250"H
    0.266"MIL-I-8846, MS122081191000A150000091709A1050000091709A4370000090261A15500000092955A11100000
    1/4"-20
    0.375"H
    0.266"MIL-I-8846, MS122121191000A153000091709A1050000091709A4370000090261A15500000092955A11100000
    1/4"-20
    0.500"H
    0.266"MIL-I-8846, MS122161191000A156000091709A1050000091709A4370000090261A15500000092955A11100000
    5/16"-18
    0.312"Q
    0.332"MIL-I-8846, MS122082191000A160000091709A1060000091709A4430000090261A15600000092955A113000000
    5/16"-18
    0.469"Q
    0.332"MIL-I-8846, MS122121191000A164000091709A1060000091709A4430000090261A15600000092955A113000000
    5/16"-18
    0.625"Q
    0.332"MIL-I-8846, MS122162191000A168000091709A1060000091709A4430000090261A15600000092955A113000000
    M2.5 x 0.45 mm2.5 mm37 Ga.
    0.104"DIN 8140, SAE MA3280-101, MIL-I-8846191000A016000091709A6780000091709A5780000090261A18700000092955A204000000
    M2.5 x 0.45 mm5 mm37 Ga.
    0.104"DIN 8140, SAE MA3280-201, MIL-I-8846191000A019000091709A6780000091709A5780000090261A18700000092955A204000000
    M3 x 0.5 mm3 mm3.2 mm
    3.2 mmDIN 8140, SAE MA3280-102, MIL-I-8846191000A022000091709A3550000091709A5240000090261A18800000092955A155000000
    M3 x 0.5 mm4.5 mm3.2 mm
    3.2 mmDIN 8140, SAE MA3280-152, MIL-I-8846191000A025000091709A3550000091709A5240000090261A18800000092955A155000000
    M3 x 0.5 mm6 mm3.2 mm
    3.2 mmDIN 8140, SAE MA3280-202, MIL-I-8846191000A028000091709A3550000091709A5240000090261A18800000092955A155000000
    M4 x 0.7 mm4 mm19 Ga.
    0.166"DIN 8140, SAE MA3280-104, MIL-I-8846191000A031000091709A3590000091709A5270000090261A19000000092955A160000000
    M4 x 0.7 mm6 mm19 Ga.
    0.166"DIN 8140, SAE MA3280-154, MIL-I-8846191000A034000091709A3590000091709A5270000090261A19000000092955A160000000
    M4 x 0.7 mm8 mm19 Ga.
    0.166"DIN 8140, SAE MA3280-204, MIL-I-8846191000A037000091709A3590000091709A5270000090261A19000000092955A160000000
    M5 x 0.8 mm5 mm5.3 mm
    5.3 mmDIN 8140, SAE MA3280-105, MIL-I-8846191000A042000091709A2010000091709A5300000090261A19100000092955A12900000
    M5 x 0.8 mm7.5 mm5.3 mm
    5.3 mmDIN 8140, SAE MA3280-155, MIL-I-8846191000A046000091709A2010000091709A5300000090261A19100000092955A12900000
    M6 x 1 mm6 mm6.3 mm
    6.3 mmDIN 8140, SAE MA3280-106, MIL-I-8846191000A050000091709A2020000091709A5330000090261A19200000092955A13100000
    M6 x 1 mm9 mm6.3 mm
    6.3 mmDIN 8140, SAE MA3280-156, MIL-I-8846191000A053000091709A2020000091709A5330000090261A19200000092955A13100000
    M6 x 1 mm12 mm6.3 mm
    6.3 mmDIN 8140, SAE MA3280-206, MIL-I-8846191000A057000091709A2020000091709A5330000090261A19200000092955A13100000
    M8 x 1.25 mm8 mm8.4 mm
    8.4 mmSAE MA3280-109, MIL-I-8846191000A065000091709A2040000091709A5420000090261A19400000092955A133000000
    M8 x 1.25 mm12 mm8.4 mm
    8.4 mmDIN 8140, SAE MA3280-159, MIL-I-8846191000A069000091709A2040000091709A5420000090261A19400000092955A133000000
    M8 x 1.25 mm16 mm8.4 mm
    8.4 mmDIN 8140, SAE MA3280-209, MIL-I-8846191000A062000091709A2040000091709A5420000090261A19400000092955A133000000
     

    Screw-Locking Seize-Resistant Helical Threaded Inserts

    Image of Product. Bottom orientation. Threaded Inserts. Screw-Locking Seize-Resistant Helical Threaded Inserts.
    Screws won't get stuck or come loose with these inserts. A dry film on the surface lubricates fasteners during insertion to prevent sticking and binding. Once installed, the irregularly shaped threads tightly grip screws to keep them in place under vibration. Also known as Heli-Coil inserts.
    Installation requires a drill bit, a helical insert tap, and an installation tool.
    Pronged—The prong attaches to an installation tool for precise control as you drive inserts in. Remove the prong with a punch or break-off tool before inserting a screw.
    Dry-Film-Lubricated 18-8 Stainless Steel—The choice for wet and outdoor environments, these inserts resist rust and mild chemicals.
    Inserts
    Through-Hole
    Taps
    Closed-End
    Hole Taps
    Installation
    Tools
    Prong
    Break-Off Tools
    Thread
    Size
    Installed
    Lg.
    Drill Bit
    Size
    For Max.
    Hole Dia.
    Specs. Met
    Pkg.
    Qty.
    Pkg.
    Each
    Each
    Each
    Each
    Pronged
     
    Dry-Film-Lubricated 18-8 Stainless Steel
    2-56
    0.086"41 Ga.
    0.096"NASM21209, MS21209C0210L591000A4010000091709A09800000091709A40100000090261A14000000092955A1010000000
    2-56
    0.129"41 Ga.
    0.096"NASM21209, MS21209C0215L591000A404000091709A0980000091709A4010000090261A1400000092955A101000000
    2-56
    0.172"41 Ga.
    0.096"NASM21209, MS21209C0220L591000A407000091709A0980000091709A4010000090261A1400000092955A101000000
    4-40
    0.112"31 Ga.
    0.120"NASM21209, MS21209C0410L591000A411000091709A1010000091709A4070000090261A15100000092955A103000000
    4-40
    0.168"31 Ga.
    0.120"NASM21209, MS21209C0415L591000A415000091709A1010000091709A4070000090261A15100000092955A103000000
    4-40
    0.224"31 Ga.
    0.120"NASM21209, MS21209C0420L591000A419000091709A1010000091709A4070000090261A15100000092955A103000000
    6-32
    0.138"25 Ga.
    0.150"NASM21209, MS21209C0610L591000A422000091709A1020000091709A4160000090261A15200000092955A10500000
    6-32
    0.207"25 Ga.
    0.150"NASM21209, MS21209C0615L591000A425000091709A1020000091709A4160000090261A15200000092955A10500000
    6-32
    0.276"25 Ga.
    0.150"NASM21209, MS21209C0620L591000A429000091709A1020000091709A4160000090261A15200000092955A10500000
    10-24
    0.285"5 Ga.
    0.206"NASM21209, MS21209C1-15L591000A436000091709A1040000091709A4280000090261A15400000092955A10900000
    10-32
    0.190"13/64"
    0.203"NASM21209, MS21209F1-10L591000A463000091709A1510000091709A4310000090261A16100000092955A10900000
    10-32
    0.285"13/64"
    0.203"NASM21209, MS21209F1-15L591000A466000091709A1510000091709A4310000090261A16100000092955A10900000
    10-32
    0.380"13/64"
    0.203"NASM21209, MS21209F1-20L591000A469000091709A1510000091709A4310000090261A16100000092955A10900000
    1/4"-20
    0.375"H
    0.266"NASM21209, MS21209C4-15L591000A443000091709A1050000091709A4370000090261A15500000092955A11100000
    1/4"-20
    0.500"H
    0.266"NASM21209, MS21209C4-20L191000A446000091709A1050000091709A4370000090261A15500000092955A11100000
    5/16"-18
    0.469"Q
    0.332"NASM21209, MS21209C5-15L191000A454000091709A1060000091709A4430000090261A15600000092955A113000000
    5/16"-18
    0.625"Q
    0.332"NASM21209, MS21209C5-20L191000A458000091709A1060000091709A4430000090261A15600000092955A113000000
     
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