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    284 Products

    Long-Nose Spring Plungers

    Image of ProductInUse. Front orientation. Contains Annotated, Border. Spring Plungers. Long-Nose Spring Plungers.
    Image of Product. Front orientation. Spring Plungers. Long-Nose Spring Plungers.
    Image of Attribute. Front orientation. Contains Annotated. Long-Nose Spring Plungers.
    Lock heavy moving parts securely in place. Often used in indexing applications, these have a longer nose than ball-nose spring plungers to withstand greater side forces without disengaging. The nose compresses when a part presses against it, and then pops out into deep notches or grooves for a strong hold.
    Spring plungers are available with or without a threadlocker. Those with a threadlocker won't wiggle loose from vibration. Spring plungers without a threadlocker are easier to remove.
    Acetal Nose—The best plastic for damp and wet environments, acetal won't swell or lose strength if exposed to moisture. These noses are extra soft to avoid scratching delicate surfaces. They are best for use on soft materials, such as aluminum.
    Spring Plungers
    Spring
    Plunger Drivers
    Nose
    Nose
    Force, lbf
    Body
    Drive
    Style
    Thread Size
    Extended
    Lg.
    Dia.
    Extended
    Compressed
    Material
    Lg.
    Front
    Back
    Each
    Each
    Acetal Nose
    6-32
    0.036"0.046"0.51.5Black-Oxide Steel0.38"Spring Plunger Driver
    Slotted
    8499A52000003382A1100000
    6-32
    0.063"0.045"0.51.518-8 Stainless Steel
    0.53"Hex
    2177A4100000———0
    6-32
    0.063"0.045"0.51.5Black-Oxide Steel0.53"Hex
    2467A340000———0
    6-32
    0.063"0.045"0.51.5Black-Oxide Steel0.53"Spring Plunger Driver
    8499A4600003382A110000
    6-32
    0.063"0.045"11.618-8 Stainless Steel
    0.53"Hex
    2177A630000———0
    6-32
    0.063"0.045"11.6Black-Oxide Steel0.53"Hex
    2467A320000———0
    6-32
    0.063"0.045"1.54.518-8 Stainless Steel
    0.53"Hex
    2177A4200000———0
    6-32
    0.063"0.045"1.54.5Black-Oxide Steel0.53"Hex
    2467A310000———0
    6-32
    0.063"0.045"1.54.5Black-Oxide Steel0.53"Spring Plunger Driver
    8499A47000003382A110000
    6-32
    0.063"0.046"0.53.5Black-Oxide Steel0.38"Spring Plunger Driver
    8499A4800003382A110000
    8-32
    0.052"0.07"0.51.518-8 Stainless Steel
    0.44"Spring Plunger Driver
    Slotted
    84765A1100003382A120000
    8-32
    0.052"0.07"0.51.5Zinc-Plated Steel0.44"Spring Plunger Driver
    Slotted
    8499A2800003382A120000
    8-32
    0.052"0.07"1.54.818-8 Stainless Steel
    0.44"Spring Plunger Driver
    Slotted
    84765A1400003382A120000
    8-32
    0.052"0.07"1.54.8Zinc-Plated Steel0.44"Spring Plunger Driver
    Slotted
    8499A2900003382A120000
    8-32
    0.093"0.07"13.318-8 Stainless Steel
    0.44"Spring Plunger Driver
    Slotted
    84765A31100003382A120000
    8-32
    0.093"0.07"13.3Black-Oxide Steel0.44"Spring Plunger Driver
    Slotted
    8499A81100003382A120000
    8-32
    0.094"0.07"0.52Black-Oxide Steel0.5"Spring Plunger Driver
    Slotted
    8499A49000003382A120000
    8-32
    0.094"0.07"0.54Black-Oxide Steel0.5"Spring Plunger Driver
    Slotted
    8499A5100003382A120000
    8-32
    0.094"0.07"0.72.318-8 Stainless Steel
    0.63"Hex
    2177A4300000———0
    8-32
    0.094"0.07"0.72.318-8 Stainless Steel
    0.63"Spring Plunger Driver
    84765A7100003382A120000
    8-32
    0.094"0.07"0.72.3Black-Oxide Steel0.63"Hex
    2467A130000———0
    8-32
    0.094"0.07"0.72.3Black-Oxide Steel0.63"Spring Plunger Driver
    8499A1100003382A120000
    8-32
    0.094"0.07"2.77.318-8 Stainless Steel
    0.63"Hex
    2177A4400000———0
    8-32
    0.094"0.07"2.77.318-8 Stainless Steel
    0.63"Spring Plunger Driver
    84765A6100003382A120000
    8-32
    0.094"0.07"2.77.3Black-Oxide Steel0.63"Hex
    2467A140000———0
    8-32
    0.094"0.07"2.77.3Black-Oxide Steel0.63"Spring Plunger Driver
    8499A1200003382A120000
    8-36
    0.052"0.07"0.51.518-8 Stainless Steel
    0.44"Spring Plunger Driver
    Slotted
    84765A170000———0
    8-36
    0.052"0.07"0.51.5Zinc-Plated Steel0.44"Spring Plunger Driver
    Slotted
    8499A310000———0
    8-36
    0.052"0.07"1.54.818-8 Stainless Steel
    0.44"Spring Plunger Driver
    Slotted
    84765A810000———0
    8-36
    0.052"0.07"1.54.8Zinc-Plated Steel0.44"Spring Plunger Driver
    Slotted
    8499A320000———0
    8-36
    0.093"0.07"13.318-8 Stainless Steel
    0.44"Spring Plunger Driver
    Slotted
    84765A3210000———0
    8-36
    0.093"0.07"13.3Black-Oxide Steel0.44"Spring Plunger Driver
    Slotted
    8499A8210000———0
    10-32
    0.065"0.093"0.82.518-8 Stainless Steel
    0.47"Spring Plunger Driver
    Slotted
    84765A8400003382A130000
    10-32
    0.065"0.093"0.82.5Zinc-Plated Steel0.47"Spring Plunger Driver
    Slotted
    8499A3300003382A130000
    10-32
    0.065"0.093"1.86.318-8 Stainless Steel
    0.47"Spring Plunger Driver
    Slotted
    84765A8700003382A130000
    10-32
    0.065"0.093"1.86.3Zinc-Plated Steel0.47"Spring Plunger Driver
    Slotted
    8499A3400003382A130000
    10-32
    0.125"0.092"1.32.718-8 Stainless Steel
    0.75"Hex
    2177A4500000———0
    10-32
    0.125"0.092"1.32.718-8 Stainless Steel
    0.75"Spring Plunger Driver
    84765A7200003382A130000
    10-32
    0.125"0.092"1.32.7Black-Oxide Steel0.75"Hex
    2467A150000———0
    10-32
    0.125"0.092"1.32.7Black-Oxide Steel0.75"Spring Plunger Driver
    8499A1300003382A130000
    10-32
    0.125"0.092"2.911.118-8 Stainless Steel
    0.75"Hex
    2177A460000———0
    10-32
    0.125"0.092"2.911.118-8 Stainless Steel
    0.75"Spring Plunger Driver
    84765A6200003382A130000
    10-32
    0.125"0.092"2.911.1Black-Oxide Steel0.75"Hex
    2467A160000———0
    10-32
    0.125"0.092"2.911.1Black-Oxide Steel0.75"Spring Plunger Driver
    8499A1400003382A130000
    10-32
    0.125"0.093"1.34.318-8 Stainless Steel
    0.47"Spring Plunger Driver
    Slotted
    84765A33100003382A130000
    10-32
    0.125"0.093"1.34.3Black-Oxide Steel0.47"Spring Plunger Driver
    Slotted
    8499A83100003382A130000
    1/4"-20
    0.078"0.119"13.518-8 Stainless Steel
    0.53"Spring Plunger Driver
    Slotted
    84765A9100003382A140000
    1/4"-20
    0.078"0.119"13.5Zinc-Plated Steel0.53"Spring Plunger Driver
    Slotted
    8499A3500003382A140000
    1/4"-20
    0.078"0.119"310.518-8 Stainless Steel
    0.53"Spring Plunger Driver
    Slotted
    84765A9400003382A140000
    1/4"-20
    0.078"0.119"310.5Zinc-Plated Steel0.53"Spring Plunger Driver
    Slotted
    8499A3600003382A140000
    1/4"-20
    0.125"0.118"2918-8 Stainless Steel
    0.75"Hex
    2177A640000———0
    1/4"-20
    0.125"0.118"2918-8 Stainless Steel
    0.75"Spring Plunger Driver
    84765A6500003382A140000
    1/4"-20
    0.125"0.118"29Black-Oxide Steel0.75"Hex
    2467A330000———0
    1/4"-20
    0.187"0.119"2718-8 Stainless Steel
    0.53"Spring Plunger Driver
    Slotted
    84765A34100003382A140000
    1/4"-20
    0.187"0.119"27Black-Oxide Steel0.53"Spring Plunger Driver
    Slotted
    8499A84100003382A140000
    1/4"-20
    0.188"0.118"1418-8 Stainless Steel
    1"Hex
    2177A4700000———0
    1/4"-20
    0.188"0.118"1418-8 Stainless Steel
    1"Spring Plunger Driver
    84765A7300003382A140000
    1/4"-20
    0.188"0.118"14Black-Oxide Steel1"Hex
    2467A170000———0
    1/4"-20
    0.188"0.118"14Black-Oxide Steel1"Spring Plunger Driver
    8499A1500003382A140000
    1/4"-20
    0.188"0.118"31318-8 Stainless Steel
    1"Hex
    2177A4800000———0
    1/4"-20
    0.188"0.118"31318-8 Stainless Steel
    1"Spring Plunger Driver
    84765A6300003382A140000
    1/4"-20
    0.188"0.118"313Black-Oxide Steel1"Hex
    2467A180000———0
    1/4"-20
    0.188"0.118"313Black-Oxide Steel1"Spring Plunger Driver
    8499A1600003382A140000
    1/4"-28
    0.188"0.118"1418-8 Stainless Steel
    1"Hex
    2177A4900000———0
    1/4"-28
    0.188"0.118"1418-8 Stainless Steel
    1"Spring Plunger Driver
    84765A7400003382A140000
    1/4"-28
    0.188"0.118"14Black-Oxide Steel1"Hex
    2467A190000———0
    1/4"-28
    0.188"0.118"14Black-Oxide Steel1"Spring Plunger Driver
    8499A1700003382A140000
    1/4"-28
    0.188"0.118"31318-8 Stainless Steel
    1"Hex
    2177A5200000———0
    1/4"-28
    0.188"0.118"31318-8 Stainless Steel
    1"Spring Plunger Driver
    84765A6400003382A140000
    1/4"-28
    0.188"0.118"313Black-Oxide Steel1"Hex
    2467A210000———0
    1/4"-28
    0.188"0.118"313Black-Oxide Steel1"Spring Plunger Driver
    8499A1800003382A140000
    5/16"-18
    0.084"0.135"1.3418-8 Stainless Steel
    0.56"Spring Plunger Driver
    Slotted
    84765A9700003382A150000
    5/16"-18
    0.084"0.135"1.34Zinc-Plated Steel0.56"Spring Plunger Driver
    Slotted
    8499A3700003382A150000
    5/16"-18
    0.084"0.135"1.54Black-Oxide Steel0.56"Spring Plunger Driver
    Slotted
    8499A5300003382A150000
    5/16"-18
    0.084"0.135"3.815.518-8 Stainless Steel
    0.56"Spring Plunger Driver
    Slotted
    84765A10100003382A150000
    5/16"-18
    0.084"0.135"3.815.5Zinc-Plated Steel0.56"Spring Plunger Driver
    Slotted
    8499A3800003382A150000
    5/16"-18
    0.187"0.135"2918-8 Stainless Steel
    0.56"Spring Plunger Driver
    Slotted
    84765A35100003382A150000
    5/16"-18
    0.187"0.135"29Black-Oxide Steel0.56"Spring Plunger Driver
    Slotted
    8499A85100003382A150000
    5/16"-18
    0.188"0.135"1.54.518-8 Stainless Steel
    1"Hex
    2177A530000———0
    5/16"-18
    0.188"0.135"1.54.518-8 Stainless Steel
    1"Spring Plunger Driver
    84765A7500003382A150000
    5/16"-18
    0.188"0.135"1.54.5Black-Oxide Steel1"Hex
    2467A220000———0
    5/16"-18
    0.188"0.135"1.54.5Black-Oxide Steel1"Spring Plunger Driver
    8499A1900003382A150000
    5/16"-18
    0.188"0.135"31518-8 Stainless Steel
    1"Hex
    2177A540000———0
    5/16"-18
    0.188"0.135"31518-8 Stainless Steel
    1"Spring Plunger Driver
    84765A6600003382A150000
    5/16"-18
    0.188"0.135"315Black-Oxide Steel1"Hex
    2467A230000———0
    5/16"-18
    0.188"0.135"315Black-Oxide Steel1"Spring Plunger Driver
    8499A2100003382A150000
    3/8"-16
    0.11"0.186"1.5518-8 Stainless Steel
    0.63"Spring Plunger Driver
    Slotted
    84765A10400003382A160000
    3/8"-16
    0.11"0.186"1.55Zinc-Plated Steel0.63"Spring Plunger Driver
    Slotted
    8499A3900003382A160000
    3/8"-16
    0.11"0.186"4.518.518-8 Stainless Steel
    0.63"Spring Plunger Driver
    Slotted
    84765A10700003382A160000
    3/8"-16
    0.11"0.186"4.518.5Zinc-Plated Steel0.63"Spring Plunger Driver
    Slotted
    8499A4100003382A160000
    3/8"-16
    0.187"0.186"312.518-8 Stainless Steel
    0.63"Spring Plunger Driver
    Slotted
    84765A36100003382A160000
    3/8"-16
    0.187"0.186"312.5Black-Oxide Steel0.63"Spring Plunger Driver
    Slotted
    8499A86100003382A160000
    3/8"-16
    0.188"0.186"2.87.218-8 Stainless Steel
    1.13"Hex
    2177A550000———0
    3/8"-16
    0.188"0.186"2.87.2Black-Oxide Steel1.13"Hex
    2467A240000———0
    3/8"-16
    0.188"0.186"5.514.518-8 Stainless Steel
    1.13"Hex
    2177A560000———0
    3/8"-16
    0.188"0.186"5.514.5Black-Oxide Steel1.13"Hex
    2467A250000———0
    3/8"-16
    0.188"0.187"2.87.218-8 Stainless Steel
    1.13"Spring Plunger Driver
    84765A7600003382A160000
    3/8"-16
    0.188"0.187"2.87.2Black-Oxide Steel1.13"Spring Plunger Driver
    8499A2200003382A160000
    3/8"-16
    0.188"0.187"5.514.518-8 Stainless Steel
    1.13"Spring Plunger Driver
    84765A6700003382A160000
    3/8"-16
    0.188"0.187"5.514.5Black-Oxide Steel1.13"Spring Plunger Driver
    8499A2300003382A160000
    1/2"-13
    0.151"0.248"1.85.518-8 Stainless Steel
    0.75"Spring Plunger Driver
    Slotted
    84765A11100003382A170000
    1/2"-13
    0.151"0.248"1.85.5Zinc-Plated Steel0.75"Spring Plunger Driver
    Slotted
    8499A4200003382A170000
    1/2"-13
    0.151"0.248"52818-8 Stainless Steel
    0.75"Spring Plunger Driver
    Slotted
    84765A11400003382A170000
    1/2"-13
    0.151"0.248"528Zinc-Plated Steel0.75"Spring Plunger Driver
    Slotted
    8499A4300003382A170000
    1/2"-13
    0.25"0.248"2.79.318-8 Stainless Steel
    1.25"Hex
    2177A5700000———0
    1/2"-13
    0.25"0.248"2.79.318-8 Stainless Steel
    1.25"Spring Plunger Driver
    84765A7700003382A170000
    1/2"-13
    0.25"0.248"2.79.3Black-Oxide Steel1.25"Hex
    2467A260000———0
    1/2"-13
    0.25"0.248"2.79.3Black-Oxide Steel1.25"Spring Plunger Driver
    8499A2400003382A170000
    1/2"-13
    0.25"0.248"3.51918-8 Stainless Steel
    0.75"Spring Plunger Driver
    Slotted
    84765A37100003382A170000
    1/2"-13
    0.25"0.248"3.519Black-Oxide Steel0.75"Spring Plunger Driver
    Slotted
    8499A87100003382A170000
    1/2"-13
    0.25"0.248"6.617.418-8 Stainless Steel
    1.25"Hex
    2177A5800000———0
    1/2"-13
    0.25"0.248"6.617.418-8 Stainless Steel
    1.25"Spring Plunger Driver
    84765A6800003382A170000
    1/2"-13
    0.25"0.248"6.617.4Black-Oxide Steel1.25"Hex
    2467A270000———0
    1/2"-13
    0.25"0.248"6.617.4Black-Oxide Steel1.25"Spring Plunger Driver
    8499A2500003382A170000
    5/8"-11
    0.215"0.31"28.518-8 Stainless Steel
    1.06"Spring Plunger Driver
    Slotted
    84765A11700003382A1800000
    5/8"-11
    0.215"0.31"28.5Zinc-Plated Steel1.06"Spring Plunger Driver
    Slotted
    8499A4400003382A1800000
    5/8"-11
    0.215"0.31"75018-8 Stainless Steel
    1.06"Spring Plunger Driver
    Slotted
    84765A12100003382A1800000
    5/8"-11
    0.215"0.31"750Zinc-Plated Steel1.06"Spring Plunger Driver
    Slotted
    8499A4500003382A1800000
    5/8"-11
    0.312"0.31"4.533.5Black-Oxide Steel1.06"Spring Plunger Driver
    Slotted
    8499A88100003382A1800000
    5/8"-11
    0.313"0.31"3.510.518-8 Stainless Steel
    1.5"Hex
    2177A5900000———0
    5/8"-11
    0.313"0.31"3.510.518-8 Stainless Steel
    1.5"Spring Plunger Driver
    84765A78000003382A1800000
    5/8"-11
    0.313"0.31"3.510.5Black-Oxide Steel1.5"Hex
    2467A2800000———0
    5/8"-11
    0.313"0.31"3.510.5Black-Oxide Steel1.5"Spring Plunger Driver
    8499A26000003382A1800000
    5/8"-11
    0.313"0.31"10.525.518-8 Stainless Steel
    1.5"Hex
    2177A6200000———0
    5/8"-11
    0.313"0.31"10.525.518-8 Stainless Steel
    1.5"Spring Plunger Driver
    84765A69000003382A1800000
    5/8"-11
    0.313"0.31"10.525.5Black-Oxide Steel1.5"Hex
    2467A2900000———0
    5/8"-11
    0.313"0.31"10.525.5Black-Oxide Steel1.5"Spring Plunger Driver
    8499A27000003382A1800000
    M4 x 0.7 mm1.5 mm1.5 mm13.618-8 Stainless Steel
    15 mmSpring Plunger Driver
    8339A1200003382A120000
    M4 x 0.7 mm1.5 mm1.5 mm13.6Black-Oxide Steel15 mmSpring Plunger Driver
    8281A1200003382A120000
    M4 x 0.7 mm2.4 mm1.8 mm2.77.3Black-Oxide Steel15.9 mmHex
    2467A3500000———0
    M5 x 0.8 mm2.3 mm2.4 mm1.34.318-8 Stainless Steel
    18 mmSpring Plunger Driver
    8339A1300003382A130000
    M5 x 0.8 mm2.3 mm2.4 mm1.34.3Black-Oxide Steel18 mmSpring Plunger Driver
    8281A1300003382A130000
    M5 x 0.8 mm3.2 mm2.3 mm2.911.1Black-Oxide Steel19.1 mmHex
    2467A3600000———0
    M6 x 1 mm2.5 mm2.7 mm1.34.318-8 Stainless Steel
    20 mmSpring Plunger Driver
    8339A1400003382A140000
    M6 x 1 mm2.5 mm2.7 mm1.34.3Black-Oxide Steel20 mmSpring Plunger Driver
    8281A1400003382A140000
    M6 x 1 mm2.5 mm2.7 mm1.64.518-8 Stainless Steel
    20 mmSpring Plunger Driver
    8339A2500003382A140000
    M6 x 1 mm2.5 mm2.7 mm1.64.5Steel20 mmSpring Plunger Driver
    8281A2500003382A140000
    M6 x 1 mm2.5 mm2.7 mm411.218-8 Stainless Steel
    20 mmSpring Plunger Driver
    8339A1900003382A140000
    M6 x 1 mm2.5 mm2.7 mm411.2Steel20 mmSpring Plunger Driver
    8281A1900003382A140000
    M6 x 1 mm4.8 mm3 mm313Black-Oxide Steel25.4 mmHex
    2467A3700000———0
    M8 x 1.25 mm3 mm3.5 mm27.918-8 Stainless Steel
    22 mmSpring Plunger Driver
    8339A26000003382A150000
    M8 x 1.25 mm3 mm3.5 mm27.9Steel22 mmSpring Plunger Driver
    8281A2600003382A150000
    M8 x 1.25 mm3 mm3.5 mm2.28.718-8 Stainless Steel
    22 mmSpring Plunger Driver
    8339A15000003382A150000
    M8 x 1.25 mm3 mm3.5 mm2.28.7Black-Oxide Steel22 mmSpring Plunger Driver
    8281A1500003382A150000
    M8 x 1.25 mm3 mm3.5 mm5.615.718-8 Stainless Steel
    22 mmSpring Plunger Driver
    8339A2100003382A150000
    M8 x 1.25 mm3 mm3.5 mm5.615.7Steel22 mmSpring Plunger Driver
    8281A2100003382A150000
    M8 x 1.25 mm4.8 mm3.4 mm315Black-Oxide Steel25.4 mmHex
    2467A3800000———0
    M10 x 1.5 mm3 mm4 mm27.918-8 Stainless Steel
    22 mmSpring Plunger Driver
    8339A27000003382A160000
    M10 x 1.5 mm3 mm4 mm27.9Steel22 mmSpring Plunger Driver
    8281A2700003382A160000
    M10 x 1.5 mm3 mm4 mm2.28.718-8 Stainless Steel
    22 mmSpring Plunger Driver
    8339A16000003382A160000
    M10 x 1.5 mm3 mm4 mm2.28.7Black-Oxide Steel22 mmSpring Plunger Driver
    8281A1600003382A160000
    M10 x 1.5 mm3 mm4 mm5.615.718-8 Stainless Steel
    22 mmSpring Plunger Driver
    8339A22000003382A160000
    M10 x 1.5 mm3 mm4 mm5.615.7Steel22 mmSpring Plunger Driver
    Slotted
    8281A2200003382A160000
    M10 x 1.5 mm4.8 mm4.7 mm5.514.5Black-Oxide Steel28.6 mmHex
    2467A3900000———0
    M12 x 1.75 mm4 mm6 mm2.312.318-8 Stainless Steel
    28 mmSpring Plunger Driver
    8339A28000003382A170000
    M12 x 1.75 mm4 mm6 mm2.312.3Steel28 mmSpring Plunger Driver
    Slotted
    8281A2800003382A170000
    M12 x 1.75 mm4 mm6 mm2.711.918-8 Stainless Steel
    28 mmSpring Plunger Driver
    8339A17000003382A170000
    M12 x 1.75 mm4 mm6 mm2.711.9Black-Oxide Steel28 mmSpring Plunger Driver
    8281A17000003382A170000
    M12 x 1.75 mm4 mm6 mm1024.718-8 Stainless Steel
    28 mmSpring Plunger Driver
    8339A23000003382A170000
    M12 x 1.75 mm4 mm6 mm1024.7Steel28 mmSpring Plunger Driver
    8281A2300003382A170000
    M12 x 1.75 mm6.4 mm6.3 mm6.617.4Black-Oxide Steel31.8 mmHex
    2467A4100000———0
    M16 x 2 mm5 mm7.5 mm1022.518-8 Stainless Steel
    32 mmSpring Plunger Driver
    8339A18000003382A1800000
    M16 x 2 mm5 mm7.5 mm1022.5Black-Oxide Steel32 mmSpring Plunger Driver
    8281A18000003382A1800000
    M16 x 2 mm5 mm7.8 mm10.516.918-8 Stainless Steel
    38.1 mmSpring Plunger Driver
    8339A24000003382A1800000
    M16 x 2 mm5 mm7.8 mm10.516.9Steel38.1 mmSpring Plunger Driver
    8281A2400003382A1800000
     

    Press-Fit Ball-Nose Spring Plungers

    Image of Product. Front orientation. Spring Plungers. Press-Fit Ball-Nose Spring Plungers, Flanged Profile, Smooth Body.

    Flanged Profile

    Smooth Body

    Image of Attribute. Front orientation. Contains Annotated. Press-Fit Ball-Nose Spring Plungers, Flanged Profile.

    Flanged Profile

    When you can't tap threads in your mounting surface, push these spring plungers into unthreaded holes. They work well in wood, plastic, and other soft materials that might crack if you try to cut threads. The spring-loaded ball compresses when a part presses against it, and then pops out into a notch or groove to hold the part in place.
    For a snug fit, use an arbor press to install these spring plungers in a slightly smaller hole than the body diameter.
    Flanged Profile—The flanged body stops the spring plunger from sliding back through the hole when the nose compresses under a strong force. It also acts as a gripping tab so you can pull the plunger out to make adjustments.
    420 Stainless Steel Nose—Highly wear resistant, the nose grinds against hard metal surfaces without denting or scratching. However, 420 stainless steel is not quite as corrosion resistant as 316 stainless steel.
    Acetal Nose—The best plastic for damp and wet environments, acetal won't swell or lose strength if exposed to moisture. These noses are extra soft to avoid scratching delicate surfaces. They are best for use on soft materials, such as aluminum.
    Smooth Body—These spring plungers slide effortlessly into unthreaded holes, but don't grip quite as firmly as those with a knurled body.
    Nose
    Nose
    Force, lbf
    Body
    Flange
    Extended
    Lg.
    Dia.
    Extended
    Compressed
    Material
    Texture
    Dia.
    Lg.
    Thick.
    Dia.
    Each
    Flanged Profile
     
    420 Stainless Steel Nose
    0.55 mm2 mm0.40.8Acetal
    Smooth3 mm3.4 mm0.6 mm3.6 mm4232N1100000
    0.8 mm3 mm0.71.3Acetal
    Smooth4 mm4 mm1 mm4.6 mm4232N120000
    1 mm4 mm1.32.1Acetal
    Smooth5 mm5 mm1 mm5.6 mm4232N130000
    1.6 mm5 mm1.42.8Acetal
    Smooth6 mm6 mm1 mm6.5 mm4232N140000
    1.9 mm6.5 mm2.24.6Acetal
    Smooth8 mm8 mm1 mm8.5 mm4232N150000
    2.4 mm8 mm2.75Acetal
    Smooth10 mm12 mm1.5 mm11 mm4232N160000
    3.3 mm10 mm3.15.6Acetal
    Smooth12 mm14.5 mm1.5 mm13 mm4232N170000
     
    Acetal Nose
    0.035"0.093"2518-8 Stainless Steel
    Smooth0.125"0.25"1/32"3/16"8483A410000
    0.035"0.093"25SteelSmooth0.125"0.25"1/32"3/16"8483A70000
    0.046"0.125"0.8218-8 Stainless Steel
    Smooth0.157"0.33"1/32"3/16"8483A790000
    0.046"0.125"1.53.518-8 Stainless Steel
    Smooth0.157"0.33"1/32"3/16"8483A80000
    0.046"0.125"1.53.5SteelSmooth0.157"0.33"1/32"3/16"8483A780000
    0.046"0.125"37.518-8 Stainless Steel
    Smooth0.157"0.33"1/32"3/16"8483A770000
    0.046"0.125"37.5SteelSmooth0.157"0.33"1/32"3/16"8483A760000
    0.058"0.156"41018-8 Stainless Steel
    Smooth0.188"0.41"1/32"1/4"8483A420000
    0.058"0.156"410SteelSmooth0.188"0.41"1/32"1/4"8483A710000
    0.07"0.187"61318-8 Stainless Steel
    Smooth0.25"0.48"3/64"5/16"8483A430000
    0.07"0.187"613SteelSmooth0.25"0.48"3/64"5/16"8483A720000
    0.09"0.25"81618-8 Stainless Steel
    Smooth0.312"0.64"3/64"3/8"8483A440000
    0.09"0.25"816SteelSmooth0.312"0.64"3/64"3/8"8483A730000
    0.11"0.312"101818-8 Stainless Steel
    Smooth0.375"0.79"5/64"1/2"8483A450000
    0.11"0.312"1018SteelSmooth0.375"0.79"5/64"1/2"8483A740000
    0.161"0.437"122318-8 Stainless Steel
    Smooth0.5"1.13"3/32"11/16"8483A460000
    0.161"0.437"1223SteelSmooth0.5"1.13"3/32"11/16"8483A750000
    0.8 mm3 mm0.71.5Acetal
    Smooth4 mm4 mm1 mm4.6 mm4232N180000
    1 mm4 mm1.32.1Acetal
    Smooth5 mm5 mm1 mm5.6 mm4232N190000
    1.6 mm5 mm1.42.8Acetal
    Smooth6 mm6 mm1 mm6.5 mm4232N210000
    1.9 mm6.5 mm2.24.6Acetal
    Smooth8 mm8 mm1 mm8.5 mm4232N220000
    2.4 mm8 mm2.75Acetal
    Smooth10 mm12 mm1.5 mm11 mm4232N230000
    3.3 mm10 mm3.15.6Acetal
    Smooth12 mm14.5 mm1.5 mm13 mm4232N240000
     

    Knob-Grip Retractable Spring Plungers

    Image of Product. Front orientation. Contains Annotated. Spring Plungers. Knob-Grip Retractable Spring Plungers.
    With the most versatile handle we offer, these fit in tight spaces while still giving you something to grab. A tug retracts the nose so you can make controlled adjustments. Use these spring plungers for everything from positioning workpieces to changing the height of tables and platforms.
    Spring plungers are available with or without a threadlocker. Those with a threadlocker won't wiggle loose from vibration. Spring plungers without a threadlocker are easier to remove.
    Steel Nose—The strongest, most wear-resistant noses, these won't deform from stress and vibration. Steel is best for dry environments, however, since moisture will cause it to rust.
    18-8 Stainless Steel Nose—The choice for wet and outdoor environments, 18-8 stainless steel resists rusting. It's strong enough for most jobs, but won't withstand stress and vibration as well as steel.
    Acetal Nose—The best plastic for damp and wet environments, acetal won't swell or lose strength if exposed to moisture. These noses are extra soft to avoid scratching delicate surfaces. They are best for use on soft materials, such as aluminum.
    Twist-to-Lock—Free up both hands to adjust your workpiece or switch out parts without the plunger springing back and getting in the way. Pull back the handle and twist to lock the nose in its retracted position.
    Nose
    Nose
    Force, lbf
    Body
    Handle
    Nonlocking
    Twist-to-Lock
    Thread Size
    Thread
    Lg.
    Extended
    Lg.
    Dia.
    Extended
    Compressed
    Material
    Lg.
    Material
    Dia.
    Each
    Each
    Steel Nose
    1/4"-20
    0.37"0.13"0.16"0.10.4Black-Oxide Steel0.97"Acetal
    1/2"8497A310000008497A41000000
    3/8"-16
    0.75"0.19"0.25"0.32Black-Oxide Steel1.4"Acetal
    3/4"8497A34000008497A4400000
    1/2"-13
    1"0.25"0.31"0.51.8Black-Oxide Steel1.9"Acetal
    1"8497A37000008497A4700000
    M6 x 1 mm10 mm3 mm3 mm0.10.3Black-Oxide Steel25 mmAcetal
    12 mm8497A6100000———0
    M6 x 1 mm13 mm3 mm3 mm0.10.3Black-Oxide Steel25 mmAcetal
    12 mm———08497A5100000
    M10 x 1.5 mm20 mm5 mm6 mm0.22Black-Oxide Steel38 mmAcetal
    19 mm8497A64000008497A5400000
    M12 x 1.75 mm25 mm6 mm8 mm0.61.8Black-Oxide Steel47 mmAcetal
    25 mm8497A67000008497A5700000
     
    18-8 Stainless Steel Nose
    1/4"-20
    0.37"0.13"0.16"0.10.418-8 Stainless Steel
    0.97"Acetal
    1/2"3350A14000003350A1100000
    3/8"-16
    0.75"0.19"0.25"0.3218-8 Stainless Steel
    1.4"Acetal
    3/4"3350A15000003350A1200000
    1/2"-13
    1"0.25"0.31"0.51.818-8 Stainless Steel
    1.9"Acetal
    1"3350A16000003350A1300000
    M6 x 1 mm10 mm3 mm3 mm0.10.318-8 Stainless Steel
    25 mmAcetal
    12 mm3350A4100000———0
    M6 x 1 mm13 mm3 mm3 mm0.10.318-8 Stainless Steel
    25 mmAcetal
    12 mm———03350A1700000
    M10 x 1.5 mm20 mm5 mm6 mm0.2218-8 Stainless Steel
    38 mmAcetal
    19 mm3350A42000003350A1800000
    M12 x 1.75 mm25 mm6 mm8 mm0.61.818-8 Stainless Steel
    47 mmAcetal
    25 mm3350A43000003350A1900000
     
    Acetal Nose
    10-32
    0.4"0.09"0.104"0.5318-8 Stainless Steel
    0.76"18-8 Stainless Steel
    3/8"———02369A4600000
    10-32
    0.4"0.09"0.104"0.53Steel0.76"Steel3/8"———02387A6600000
    1/4"-20
    0.5"0.125"0.144"1518-8 Stainless Steel
    0.88"18-8 Stainless Steel
    1/2"———02369A4100000
    1/4"-20
    0.5"0.125"0.144"15Steel0.88"Steel1/2"———02387A6100000
    1/4"-20
    0.5"0.13"0.124"1418-8 Stainless Steel
    0.81"18-8 Stainless Steel
    1/2"84935A9200000———0
    1/4"-20
    0.5"0.13"0.124"14Steel0.81"Steel1/2"8497A7100000———0
    5/16"-18
    0.63"0.188"0.179"1.5618-8 Stainless Steel
    1.09"18-8 Stainless Steel
    5/8"———02369A4200000
    5/16"-18
    0.63"0.188"0.179"1.56Steel1.09"Steel5/8"———02387A6200000
    5/16"-18
    0.63"0.19"0.155"1618-8 Stainless Steel
    1"18-8 Stainless Steel
    5/8"84935A9300000———0
    5/16"-18
    0.63"0.19"0.155"16Steel1"Steel5/8"8497A7200000———0
    3/8"-16
    0.75"0.218"0.216"1.5818-8 Stainless Steel
    1.28"18-8 Stainless Steel
    3/4"———02369A4300000
    3/8"-16
    0.75"0.218"0.216"1.58Steel1.28"Steel3/4"———02387A6300000
    3/8"-16
    0.75"0.22"0.186"1818-8 Stainless Steel
    1.25"18-8 Stainless Steel
    3/4"84935A91700000———0
    3/8"-16
    0.75"0.22"0.186"18Steel1.25"Steel3/4"8497A7300000———0
    1/2"-13
    0.88"0.25"0.249"110Steel1.5"Steel1"8497A7400000———0
    1/2"-13
    0.88"0.25"0.31"2.51018-8 Stainless Steel
    1.5"18-8 Stainless Steel
    1"———02369A4400000
    1/2"-13
    0.88"0.25"0.31"2.510Steel1.5"Steel1"———02387A6400000
    5/8"-11
    1"0.313"0.373"51018-8 Stainless Steel
    1.72"18-8 Stainless Steel
    1 1/8"———02369A4500000
    5/8"-11
    1"0.313"0.373"510Steel1.72"Steel1 1/8"———02387A6500000
    5/8"-11
    1"0.319"0.312"1.512Steel1.75"Steel1 1/4"8497A71900000———0
    3/4"-10
    1.13"0.45"0.375"1.51618-8 Stainless Steel
    2.15"18-8 Stainless Steel
    1 1/2"———02369A4700000
     

    Ball-Nose Spring Plungers

    Image of Product. Front orientation. Spring Plungers. Ball-Nose Spring Plungers.
    Image of Attribute. Front orientation. Contains Annotated. Ball-Nose Spring Plungers.
    Align, position, and lock moving parts for most machining and assembly tasks. These spring plungers have a spring-loaded ball that compresses when a part presses against it, and then pops out into a notch or groove to hold the part in place. Unlike long-nose spring plungers, the ball rolls easily in and out of position, so they're a great fit for applications that require consistent, smooth movement, such as positioning parts in an assembly line and aligning fixtures and jigs when cutting or drilling.
    Spring plungers are available with or without a threadlocker. Those with a threadlocker won't wiggle loose from vibration. Spring plungers without a threadlocker are easier to remove.
    440C Stainless Steel Nose—The strongest, most wear-resistant stainless steel noses, these grind against hard metal surfaces without denting or scratching. However, they are not as corrosion resistant as 316 stainless steel.
    Nylon Nose—Extra soft to avoid scratching delicate surfaces. Nylon is best for use on soft materials, such as aluminum. It will swell and weaken when exposed to moisture, however, so it should only be used in dry environments.
    Nose
    Nose
    Force, lbf
    Body
    Thread
    Size
    Extended
    Lg.
    Dia.
    Extended
    Compressed
    Material
    Lg.
    Drive
    Style
    Each
    440C Stainless Steel Nose
    1/4"-20
    0.03"0.125"12.5Acetal
    0.53"Slotted
    84775A4200000
    1/4"-20
    0.03"0.125"25Acetal
    0.53"Slotted
    84775A410000
    5/16"-18
    0.039"0.156"24.5Acetal
    0.58"Slotted
    84775A440000
    5/16"-18
    0.039"0.156"49Acetal
    0.58"Slotted
    84775A430000
    3/8"-16
    0.053"0.187"2.55Acetal
    0.63"Slotted
    84775A460000
    3/8"-16
    0.053"0.187"510Acetal
    0.63"Slotted
    84775A450000
     
    Nylon Nose
    1/4"-20
    0.03"0.125"12.5Acetal
    0.53"Slotted
    84775A520000
    1/4"-20
    0.03"0.125"25Acetal
    0.53"Slotted
    84775A510000
    5/16"-18
    0.039"0.156"24.5Acetal
    0.58"Slotted
    84775A560000
    5/16"-18
    0.039"0.156"49Acetal
    0.58"Slotted
    84775A550000
    3/8"-16
    0.053"0.187"2.55Acetal
    0.63"Slotted
    84775A540000
    3/8"-16
    0.053"0.187"510Acetal
    0.63"Slotted
    84775A530000
     

    Press-Fit Long-Nose Spring Plungers

    Image of Product. Front orientation. Spring Plungers. Press-Fit Long-Nose Spring Plungers, Flanged Profile.

    Flanged Profile

    Image of Attribute. Front orientation. Contains Annotated. Press-Fit Long-Nose Spring Plungers, Flanged Profile.

    Flanged

    Profile

    Push these spring plungers into unthreaded holes to lock heavy moving parts securely in place. Often used in indexing applications, they have a longer nose than ball-nose spring plungers to withstand greater side forces without disengaging. The nose compresses when a part presses against it, and then pops out into deep notches or grooves for a strong hold.
    For a snug fit, use an arbor press to install these spring plungers in a slightly smaller hole than the body diameter.
    Flanged Profile—The flanged body stops the spring plunger from sliding back through the hole when the nose compresses under a strong force. It also acts as a gripping tab so you can pull the plunger out to make adjustments.
    Acetal Nose—The best plastic for damp and wet environments, acetal won't swell or lose strength if exposed to moisture. These noses are extra soft to avoid scratching delicate surfaces. They are best for use on soft materials, such as aluminum.
    Nose
    Nose
    Force, lbf
    Body
    Flange
    Extended
    Lg.
    Dia.
    Extended
    Compressed
    Material
    Dia.
    Lg.
    Thick.
    Dia.
    Each
    Flanged Profile
     
    Acetal Nose
    0.094"0.121"0.8218-8 Stainless Steel
    0.188"0.44"3/64"1/4"8682A5500000
    0.094"0.121"0.82Black-Oxide Steel0.188"0.44"3/64"1/4"8683A190000
    0.094"0.121"1.54.518-8 Stainless Steel
    0.188"0.44"3/64"1/4"8682A510000
    0.094"0.121"1.54.5Black-Oxide Steel0.188"0.44"3/64"1/4"8683A150000
    0.125"0.168"1.3318-8 Stainless Steel
    0.25"0.52"1/16"5/16"8682A580000
    0.125"0.168"1.33Black-Oxide Steel0.25"0.52"1/16"5/16"8683A250000
    0.125"0.168"2.5618-8 Stainless Steel
    0.25"0.52"1/16"5/16"8682A520000
    0.125"0.168"2.56Black-Oxide Steel0.25"0.52"1/16"5/16"8683A160000
    0.187"0.234"2.5718-8 Stainless Steel
    0.375"0.79"3/32"1/2"8682A590000
    0.187"0.234"2.57Black-Oxide Steel0.375"0.79"3/32"1/2"8683A260000
    0.187"0.234"51418-8 Stainless Steel
    0.375"0.79"3/32"1/2"8682A530000
    0.187"0.234"514Black-Oxide Steel0.375"0.79"3/32"1/2"8683A170000
    0.25"0.332"4918-8 Stainless Steel
    0.5"1.1"1/8"11/16"8682A650000
    0.25"0.332"49Black-Oxide Steel0.5"1.1"1/8"11/16"8683A270000
    0.25"0.332"81818-8 Stainless Steel
    0.5"1.1"1/8"11/16"8682A540000
    0.25"0.332"818Black-Oxide Steel0.5"1.1"1/8"11/16"8683A180000
     

    L-Handle Retractable Spring Plungers

    Image of Product. Front orientation. Contains Annotated. Spring Plungers. L-Handle Retractable Spring Plungers.
    The L-handle on these spring plungers takes up less space than a T-handle and swivels to avoid obstacles. Pull it back to manually retract the nose and position, align, and lock components as needed for your job.
    Spring plungers are available with or without a threadlocker. Those with a threadlocker won't wiggle loose from vibration. Spring plungers without a threadlocker are easier to remove.
    Acetal Nose—The best plastic for damp and wet environments, acetal won't swell or lose strength if exposed to moisture. These noses are extra soft to avoid scratching delicate surfaces. They are best for use on soft materials, such as aluminum.
    Twist-to-Lock—Free up both hands to adjust your workpiece or switch out parts without the plunger springing back and getting in the way. Pull back the handle and twist to lock the nose in its retracted position.
    Nose
    Nose
    Force, lbf
    Body
    Handle
    Twist-to-Lock
    Thread
    Size
    Thread
    Lg.
    Extended
    Lg.
    Dia.
    Extended
    Compressed
    Material
    Lg.
    Material
    Lg.
    Drive Style
    Each
    Acetal Nose
    1/4"-20
    0.75"0.375"0.156"0.52.518-8 Stainless Steel
    1.25"18-8 Stainless Steel
    5/8"External Hex
    2372A46000000
    1/4"-20
    0.75"0.375"0.156"0.52.5Zinc-Plated Steel1.25"18-8 Stainless Steel
    5/8"External Hex
    2383A4100000
    3/8"-16
    1.31"0.563"0.25"0.83.818-8 Stainless Steel
    2"18-8 Stainless Steel
    1"External Hex
    2372A4700000
    3/8"-16
    1.31"0.563"0.25"0.83.8Zinc-Plated Steel2"18-8 Stainless Steel
    1"External Hex
    2383A4200000
    1/2"-13
    1.38"0.75"0.312"1518-8 Stainless Steel
    2.13"18-8 Stainless Steel
    1 1/4"External Hex
    2372A4800000
    1/2"-13
    1.38"0.75"0.312"15Zinc-Plated Steel2.13"18-8 Stainless Steel
    1 1/4"External Hex
    2383A4300000
    5/8"-11
    1.94"1"0.375"1518-8 Stainless Steel
    3"18-8 Stainless Steel
    1 3/8"External Hex
    2372A4900000
    5/8"-11
    1.94"1"0.375"15Zinc-Plated Steel3"18-8 Stainless Steel
    1 3/8"External Hex
    2383A4400000
     
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