McMaster-Carr logo
    Filter by
    System of Measurement
    For Use In
    Threaded Insert Type
    Thread Type
    Industrial Info Compare
    Thread Spacing
    Industrial Info Compare
    Threaded Insert Securing Type
    DFARS Specialty Metals
    Industrial Info Compare
    U.S.–Mexico–Canada Agreement (USMCA) Qualifying
    Export Control Classification Number (ECCN)
    Industrial Info Snippet
    Forward
    Enter e-mail addresses in the fields below
    Message
    Cancel
    Print
    How can we improve?
    Comments
    E-mail address (if you would like a response)
    97 Products
    About Threaded Inserts
    industrial info icon

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

    Threaded Insert Type

    Performance

    Twist-Resistant Press-In Threaded Inserts for Plastic

    Image of Product. Bottom orientation. Threaded Inserts. Twist-Resistant Press-In Threaded Inserts for Plastic.
    The hex-shaped body resists loosening and twisting in round holes for a more secure hold than other press-in inserts for plastic. Unlike screw-to-expand inserts, these inserts stay put even before you screw in a fastener. However, they may lose strength if screws are repeatedly removed and reinserted. Install inserts with an arbor press or similar pressure tool.
    18-8 Stainless Steel—The choice for wet and outdoor environments, these inserts resist rust and mild chemicals. Since they’re lead-free, they can be safely recycled.
    Lightweight Aluminum—At one-third the weight of steel or brass, use these inserts in robotics, aerospace parts, and other applications with strict weight limits. They also resist rust about as well as stainless steel but aren't as strong. Since inserts are lead-free, they can be safely recycled.
    Thread Size
    Installed
    Lg.
    Drill Bit
    Size
    For Max.
    Hole Dia.
    Pkg.
    Qty.
    Pkg.
    Standard Profile
     
    18-8 Stainless Steel
    2-56
    		0.230"3/16"
    		0.188"2592398A310000000
    4-40
    		0.234"3/16"
    		0.188"2592398A11200000
    6-32
    		0.234"3/16"
    		0.188"2592398A11300000
    8-32
    		0.266"1/4"
    		0.250"2592398A11400000
    10-24
    		0.265"1/4"
    		0.250"1092398A3200000
    10-32
    		0.266"1/4"
    		0.250"2592398A11500000
    1/4"-20
    		0.313"5/16"
    		0.313"1092398A1160000
    5/16"-18
    		0.365"3/8"
    		0.375"1092398A33000000
    M2.5 x 0.45 mm5.8 mm4.7 mm
    		4.7 mm1092398A10100000
    M3 x 0.5 mm5.8 mm4.7 mm
    		4.7 mm2592398A12100000
    M3.5 x 0.6 mm5.8 mm4.7 mm
    		4.7 mm2592398A41000000
    M4 x 0.7 mm6.7 mm6.3 mm
    		6.3 mm2592398A12300000
    M5 x 0.8 mm6.7 mm6.3 mm
    		6.3 mm2592398A12500000
    M6 x 1 mm8 mm7.9 mm
    		7.9 mm1092398A1270000
    M8 x 1.25 mm9.27 mm9.6 mm
    		9.6 mm1092398A34000000
     
    Lightweight Aluminum
    2-56
    		0.234"3/16"
    		0.188"5092397A11700000
    4-40
    		0.234"3/16"
    		0.188"5092397A1120000
    6-32
    		0.234"3/16"
    		0.188"5092397A11300000
    8-32
    		0.266"1/4"
    		0.250"5092397A11400000
    10-24
    		0.265"1/4"
    		0.250"2592397A21000000
    10-32
    		0.266"1/4"
    		0.250"5092397A11500000
    1/4"-20
    		0.313"5/16"
    		0.313"2592397A11600000
    M2.5 x 0.45 mm5.84 mm4.75 mm
    		4.75 mm2592003A1500000
    M3 x 0.5 mm5.84 mm3/16"
    		0.188"2592003A1100000
    M3.5 x 0.6 mm5.84 mm4.75 mm
    		4.75 mm2592003A1600000
    M4 x 0.7 mm6.73 mm1/4"
    		0.250"2592003A1200000
    M5 x 0.8 mm6.73 mm1/4"
    		0.250"2592003A1300000
    M6 x 1 mm8 mm7.9 mm
    		7.9 mm2592003A14000000
     

    Tapping Threaded Inserts for Softwood

    The large external threads on these inserts cut and grab softwood for a secure hold. They install in one step, so they’re ideal for producing a lot of threaded connections fast. A drill and installation bit is the quickest method, or use a hex driver for smaller or one-off jobs.
    Flanged Profile—Flanges on the insert create a load-bearing surface that prevents cracks or deformation in the base material. They also curb overtightening and keep inserts from getting pulled out or through.
    Zinc Alloy—Soft enough to cut into wood without splitting it, these inserts also resist occasional moisture.
    Inserts
    Installation
    Tools
    Flange
    Drive
    Thread Size
    Installed
    Lg.
    Dia.
    Thick.
    Drill Bit
    Size
    For Max.
    Hole Dia.
    Style
    Size,
    mm
    Pkg.
    Qty.
    Pkg.
    Each
    Standard Profile
    Image of Product. Standard. Bottom orientation. Threaded Inserts. Tapping Threaded Inserts for Softwood, Standard Profile.

    Standard

     
    Zinc Alloy
    6-32
    		0.375"——7/32"
    		0.219"Hex
    		35092105A10100000———0
    8-32
    		0.391"——15/64"
    		0.234"Hex
    		410092105A6600000096924A110000000
    10-24
    		0.391"——9/32"
    		0.281"Hex
    		510092105A1020000096924A22000000
    10-24
    		0.516"——9/32"
    		0.281"Hex
    		55092105A665000096924A22000000
    10-32
    		0.391"——9/32"
    		0.281"Hex
    		510092105A1030000096924A22000000
    10-32
    		0.516"——9/32"
    		0.281"Hex
    		55092105A670000096924A22000000
    1/4"-20
    		0.391"——23/64"
    		0.359"Hex
    		610092105A1040000096924A33000000
    1/4"-20
    		0.516"——23/64"
    		0.359"Hex
    		610092105A6750000096924A33000000
    1/4"-20
    		0.781"——23/64"
    		0.359"Hex
    		65092105A6760000096924A33000000
    5/16"-18
    		0.500"——7/16"
    		0.438"Hex
    		85092105A1050000096924A45000000
    5/16"-18
    		0.781"——7/16"
    		0.438"Hex
    		85092105A6780000096924A45000000
    5/16"-18
    		0.984"——7/16"
    		0.438"Hex
    		82592105A7790000096924A45000000
    M4 x 0.7 mm10 mm——6 mm
    		6 mmHex
    		410092105A1060000096924A11000000
    M6 x 1 mm13 mm——9 mm
    		9 mmHex
    		65095596A100000096924A33000000
    M6 x 1 mm20 mm——9 mm
    		9 mmHex
    		65095596A110000096924A33000000
    M8 x 1.25 mm13 mm——11 mm
    		11 mmHex
    		82595596A200000096924A45000000
    M8 x 1.25 mm20 mm——11 mm
    		11 mmHex
    		82595596A210000096924A45000000
     
    Flanged Profile
    Image of Product. Flanged. Bottom orientation. Threaded Inserts. Tapping Threaded Inserts for Softwood, Flanged Profile.

    Flanged

     
    Zinc Alloy
    8-32
    		0.391"0.335"0.025"15/64"
    		0.234"Hex
    		410092105A0020000096924A11000000
    8-32
    		0.781"0.335"0.03"15/64"
    		0.234"Hex
    		42592105A020000096924A11000000
    10-24
    		0.391"0.453"0.03"9/32"
    		0.281"Hex
    		55092105A006000096924A22000000
    10-24
    		0.516"0.453"0.043"5/16"
    		0.313"Hex
    		55092105A021000096924A22000000
    10-24
    		0.781"0.453"0.03"9/32"
    		0.281"Hex
    		55092105A0100000096924A22000000
    10-32
    		0.391"0.453"0.03"9/32"
    		0.281"Hex
    		55092105A014000096924A22000000
    10-32
    		0.516"0.453"0.03"9/32"
    		0.281"Hex
    		55092105A016000096924A22000000
    10-32
    		0.781"0.453"0.03"9/32"
    		0.281"Hex
    		52592105A018000096924A22000000
    1/4"-20
    		0.391"0.492"0.043"23/64"
    		0.359"Hex
    		65092105A022000096924A33000000
    1/4"-20
    		0.516"0.492"0.03"23/64"
    		0.359"Hex
    		610092105A1000000096924A33000000
    1/4"-20
    		0.625"0.492"0.038"23/64"
    		0.359"Hex
    		62592105A208000096924A33000000
    1/4"-20
    		0.781"0.492"0.04"23/64"
    		0.359"Hex
    		65092105A2000000096924A33000000
    1/4"-20
    		0.984"0.492"0.04"23/64"
    		0.359"Hex
    		65092105A3000000096924A33000000
    5/16"-18
    		0.516"0.571"0.03"7/16"
    		0.438"Hex
    		85092105A4100000096924A45000000
    5/16"-18
    		0.781"0.571"0.062"7/16"
    		0.438"Hex
    		82592105A023000096924A45000000
    5/16"-18
    		0.984"0.571"0.03"7/16"
    		0.438"Hex
    		82592105A4150000096924A45000000
    3/8"-16
    		0.516"0.63"0.03"15/32"
    		0.469"Hex
    		102592105A4200000096924A56000000
    3/8"-16
    		0.781"0.626"0.03"15/32"
    		0.469"Hex
    		102592105A2010000096924A56000000
    3/8"-16
    		0.984"0.625"0.04"15/32"
    		0.469"Hex
    		102592105A4300000096924A56000000
    M4 x 0.7 mm10 mm8 mm0.5 mm6 mm
    		6 mmHex
    		410095596A202000096924A11000000
    M5 x 0.8 mm10 mm11.5 mm1.1 mm7.9 mm
    		7.9 mmHex
    		55095596A203000096924A22000000
    M5 x 0.8 mm13 mm11.5 mm1.1 mm7.9 mm
    		7.9 mmHex
    		52595596A204000096924A22000000
    M6 x 1 mm10 mm12.5 mm1.1 mm9.1 mm
    		9.1 mmHex
    		62595596A205000096924A33000000
    M6 x 1 mm13 mm12 mm0.635 mm9 mm
    		9 mmHex
    		65095596A500000096924A33000000
    M6 x 1 mm16 mm12.5 mm1 mm9.1 mm
    		9.1 mmHex
    		62595596A206000096924A33000000
    M6 x 1 mm20 mm12 mm0.762 mm9 mm
    		9 mmHex
    		65095596A510000096924A33000000
    M8 x 1.25 mm13 mm15 mm1.016 mm11 mm
    		11 mmHex
    		82595596A600000096924A45000000
    M8 x 1.25 mm20 mm15 mm1.016 mm11 mm
    		11 mmHex
    		82595596A610000096924A45000000
    M8 x 1.25 mm25 mm14.5 mm1.2 mm11 mm
    		11 mmHex
    		81095596A207000096924A45000000
    M10 x 1.5 mm13 mm16 mm0.8 mm12 mm
    		12 mmHex
    		102595596A310000096924A56000000
    M10 x 1.5 mm25 mm16 mm0.8 mm12 mm
    		12 mmHex
    		102595596A3200000096924A56000000
     

    Tapping Threaded Inserts for Hardwood

    Image of Product. Bottom orientation. Threaded Inserts. Tapping Threaded Inserts for Hardwood.
    The sharp threads on these inserts cut into hardwood for a secure hold. They install in one step, so they’re ideal for quickly creating a lot of threaded connections in wooden fixtures and panels. All you need is a drill and an installation bit. Also known as knife-thread inserts.
    Zinc-Plated Steel—A step up from plain steel, the plating withstands occasional exposure to moisture.
    Inserts
    Installation
    Tools
    Drive
    Thread
    Size
    Installed
    Lg.
    Drill Bit
    Size
    For Max.
    Hole Dia.
    Style
    Size,
    mm
    Pkg.
    Qty.
    Pkg.
    Each
     
    Zinc-Plated Steel
    8-32
    		0.394"17/64"
    		0.250"Hex
    		42590192A15700000096924A110000000
    10-24
    		0.472"5/16"
    		0.297"Hex
    		52590192A1160000096924A22000000
    1/4"-20
    		0.394"3/8"
    		0.375"Hex
    		62590192A1580000096924A33000000
    1/4"-20
    		0.472"3/8"
    		0.375"Hex
    		61090192A1520000096924A33000000
    1/4"-20
    		0.591"3/8"
    		0.375"Hex
    		61090192A1530000096924A33000000
    1/4"-20
    		0.709"3/8"
    		0.375"Hex
    		61090192A1590000096924A33000000
    1/4"-20
    		0.787"3/8"
    		0.375"Hex
    		61090192A1540000096924A33000000
    1/4"-20
    		1.181"3/8"
    		0.375"Hex
    		61090192A1330000096924A33000000
    5/16"-18
    		0.591"15/32"
    		0.453"Hex
    		81090192A1610000096924A45000000
    5/16"-18
    		0.709"15/32"
    		0.453"Hex
    		81090192A1270000096924A45000000
    5/16"-18
    		1.181"15/32"
    		0.469"Hex
    		81090192A1340000096924A45000000
    3/8"-16
    		0.591"5/8"
    		0.625"Hex
    		101090192A1350000096924A56000000
    3/8"-16
    		0.787"5/8"
    		0.625"Hex
    		101090192A1360000096924A56000000
    3/8"-16
    		1.181"5/8"
    		0.609"Hex
    		101090192A1560000096924A56000000
     

    Tapping Threaded Insert Assortments for Softwood

    Image of Product. Front orientation. Threaded Inserts. Tapping Threaded Insert Assortments for Softwood.
    These assortments include various sizes of inserts that don’t need a tapped hole. The large external threads cut into and grab softwood for a strong hold. Install inserts with a hex driver or use a drill and an installation bit (not included) to get the job done faster.
    Flanged Profile—Flanges on the insert create a load-bearing surface that prevents cracks or deformation in the base material. They also curb overtightening and keep inserts from getting pulled out or through.
    Zinc Alloy—Soft enough to cut into wood without splitting it, these inserts also resist occasional moisture.
    Flange
    Drive
    No. of Inserts
    Included
    Includes
    Body Lg.
    Dia.
    Thick.
    Drill Bit Size
    For Max. Hole Dia.
    Style
    Size, mm
    Each
    Standard Profile
     
    Zinc Alloy
    508-32 Thread × 0.394" Installed Lg. (10 Each)
    10-24 Thread × 0.512" Installed Lg. (10 Each)
    10-32 Thread × 0.512" Installed Lg. (10 Each)
    1/4"-20 Thread × 0.512" Installed Lg. (10 Each)
    5/16"-18 Thread × 0.789" Installed Lg. (10 Each)    		———15/64"
    9/32"
    23/64"
    7/16"
    		15/64"
    9/32"
    23/64"
    7/16"    		Hex
    		4, 5, 6, 892039A249000000
     
    Flanged Profile
     
    Zinc Alloy
    488-32 Thread x 0.394" Installed Lg. (10 Each)
    10-24 Thread x 0.394" Installed Lg. (10 Each)
    1/4"-20 Thread x 0.512" Installed Lg. (10 Each)
    5/16"-18 Thread x 0.512" Installed Lg. (10 Each)
    3/8"-16 Thread x 0.984" Installed Lg. (8 Each)    		0.37"
    0.374"
    0.481"
    0.488"
    0.953"    		0.329"
    0.433"
    0.469"
    0.567"
    0.626"    		0.02"
    0.024"
    0.031"    		15/64"
    9/32"
    23/64"
    7/16"
    15/32"
    		15/64"
    9/32"
    23/64"
    7/16"
    15/32"    		Hex
    		4, 5, 6, 8, 1092039A10100000
     
    back to top