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    82 Products

    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.
    316 Stainless Steel Nose—With the best corrosion resistance of all, 316 stainless steel stands up to harsh weather, salt water, and chemicals. The nose is strong enough for most jobs, but won't withstand stress and vibration as well as steel.
    Brass Nose—Similar to 18-8 stainless steel, brass is corrosion resistant enough to stand up to wet environments. Since brass is softer than other metals, these noses are less likely to dent surfaces, however, they could deform under high stress.
    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
    5/16"-18
    0.6"0.19"0.155"15Black-Oxide Steel1.1"Steel5/8"———08497A76000000
    5/16"-18
    0.63"0.187"0.155"1.56Zinc-Plated Steel1.09"Steel5/8"———084915A5600000
    5/16"-18
    0.63"0.188"0.154"16Zinc-Plated Steel1"Steel5/8"84915A46000000———0
     
    18-8 Stainless Steel Nose
    5/16"-18
    0.63"0.187"0.155"1.5618-8 Stainless Steel
    1.09"18-8 Stainless Steel
    5/8"———084935A6600000
    5/16"-18
    0.63"0.188"0.154"1618-8 Stainless Steel
    1"18-8 Stainless Steel
    5/8"84935A3800000———0
     
    316 Stainless Steel Nose
    5/16"-18
    0.6"0.19"0.155"15316 Stainless Steel
    1.1"316 Stainless Steel
    5/8"———08692A2300000
    5/16"-18
    0.63"0.19"0.155"15316 Stainless Steel
    1.01"316 Stainless Steel
    5/8"8692A1300000———0
     
    Brass Nose
    5/16"-18
    0.6"0.19"0.155"15Brass1.1"Brass5/8"———08471A1700000
    5/16"-18
    0.63"0.19"0.155"15Brass1.01"Brass5/8"8471A2600000———0
     
    Acetal Nose
    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
     

    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.
    316 Stainless Steel Nose—With the best corrosion resistance of all, 316 stainless steel stands up to harsh weather, salt water, and chemicals. The nose is strong enough for most jobs, but won't withstand stress and vibration as well as steel.
    Brass Nose—Similar to 18-8 stainless steel, brass is corrosion resistant enough to stand up to wet environments. Since brass is softer than other metals, these noses are less likely to dent surfaces, however, they could deform under high stress.
    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.
    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
    440C Stainless Steel Nose
    5/16"-18
    0.039"0.156"24.5Acetal
    0.58"Slotted
    84775A4400000———0
    5/16"-18
    0.039"0.156"49Acetal
    0.58"Slotted
    84775A430000———0
    5/16"-18
    0.04"0.156"24.518-8 Stainless Steel
    0.58"Spring Plunger Driver
    Slotted
    3408A9900003382A1500000
    5/16"-18
    0.04"0.156"24.5Steel0.58"Spring Plunger Driver
    Slotted
    3408A7600003382A150000
    5/16"-18
    0.04"0.156"4918-8 Stainless Steel
    0.58"Spring Plunger Driver
    Slotted
    3408A100003382A150000
    5/16"-18
    0.04"0.156"4918-8 Stainless Steel
    0.72"Spring Plunger Driver
    Hex
    5901A35000003382A150000
    5/16"-18
    0.04"0.156"49Steel0.58"Spring Plunger Driver
    Slotted
    3408A7700003382A150000
    5/16"-18
    0.04"0.156"49Black-Oxide Steel0.72"Spring Plunger Driver
    Hex
    5901A1500003382A150000
    5/16"-18
    0.04"0.156"61718-8 Stainless Steel
    0.58"Spring Plunger Driver
    Slotted
    3408A200003382A150000
    5/16"-18
    0.04"0.156"617Steel0.58"Spring Plunger Driver
    Slotted
    3408A7800003382A150000
     
    316 Stainless Steel Nose
    5/16"-18
    0.04"0.156"617316 Stainless Steel
    0.58"Spring Plunger Driver
    Slotted
    8686A21000003382A150000
     
    Brass Nose
    5/16"-18
    0.04"0.156"617Brass0.58"Spring Plunger Driver
    Slotted
    8687A21000003382A150000
     
    Nylon Nose
    5/16"-18
    0.039"0.156"24.5Acetal
    0.58"Slotted
    84775A560000———0
    5/16"-18
    0.039"0.156"49Acetal
    0.58"Slotted
    84775A550000———0
    5/16"-18
    0.04"0.156"24.518-8 Stainless Steel
    0.58"Spring Plunger Driver
    Slotted
    34085A4600003382A150000
    5/16"-18
    0.04"0.156"24.5Steel0.58"Spring Plunger Driver
    Slotted
    84805A6700003382A150000
    5/16"-18
    0.04"0.156"4918-8 Stainless Steel
    0.58"Spring Plunger Driver
    Slotted
    34085A4700003382A150000
    5/16"-18
    0.04"0.156"49Steel0.58"Spring Plunger Driver
    Slotted
    84805A5800003382A150000
    5/16"-18
    0.04"0.156"61718-8 Stainless Steel
    0.58"Spring Plunger Driver
    Slotted
    34085A4800003382A150000
    5/16"-18
    0.04"0.156"617Steel0.58"Spring Plunger Driver
    Slotted
    84805A6800003382A150000
     

    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.
    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.
    316 Stainless Steel Nose—With the best corrosion resistance of all, 316 stainless steel stands up to harsh weather, salt water, and chemicals. The nose is strong enough for most jobs, but won't withstand stress and vibration as well as steel.
    Brass Nose—Similar to 18-8 stainless steel, brass is corrosion resistant enough to stand up to wet environments. Since brass is softer than other metals, these noses are less likely to dent surfaces, however, they could deform under high stress.
    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.
    Wd.
    Dia.
    Extended
    Compressed
    Material
    Lg.
    Front
    Back
    Each
    Each
    Steel Nose
    5/16"-18
    0.084"0.135"1.34Zinc-Plated Steel0.56"Spring Plunger Driver
    Slotted
    3126A87000003382A1500000
    5/16"-18
    0.084"0.135"1.54Black-Oxide Steel0.56"Spring Plunger Driver
    Slotted
    3126A65000003382A150000
    5/16"-18
    0.084"0.135"3.815.5Zinc-Plated Steel0.56"Spring Plunger Driver
    Slotted
    3126A8900003382A150000
    5/16"-18
    0.187"0.135"29Black-Oxide Steel0.56"Spring Plunger Driver
    Slotted
    3126A25100003382A150000
    5/16"-18
    0.188"0.135"1.54.5Black-Oxide Steel1"Hex
    8495A250000———0
    5/16"-18
    0.188"0.135"1.54.5Black-Oxide Steel1"Spring Plunger Driver
    3126A2900003382A150000
    5/16"-18
    0.188"0.135"315Black-Oxide Steel1"Hex
    8495A180000———0
    5/16"-18
    0.188"0.135"315Black-Oxide Steel1"Spring Plunger Driver
    3126A4300003382A150000
    5/16"-18
    0.188"0.125"1.54.5Black-Oxide Steel1"External Hex
    3360A610000———0
    5/16"-18
    0.188"0.125"315Black-Oxide Steel1"External Hex
    3360A340000———0
     
    18-8 Stainless Steel Nose
    5/16"-18
    0.084"0.135"1.3418-8 Stainless Steel
    0.56"Spring Plunger Driver
    Slotted
    84985A5800003382A150000
    5/16"-18
    0.084"0.135"1.34Zinc-Plated Steel0.56"Spring Plunger Driver
    Slotted
    8490A9300003382A150000
    5/16"-18
    0.084"0.135"3.815.518-8 Stainless Steel
    0.56"Spring Plunger Driver
    Slotted
    84985A6100003382A150000
    5/16"-18
    0.084"0.135"3.815.5Zinc-Plated Steel0.56"Spring Plunger Driver
    Slotted
    8490A8400003382A150000
    5/16"-18
    0.187"0.135"2918-8 Stainless Steel
    0.56"Spring Plunger Driver
    Slotted
    84985A1500003382A150000
    5/16"-18
    0.188"0.135"1.54.518-8 Stainless Steel
    1"Hex
    8476A460000———0
    5/16"-18
    0.188"0.135"1.54.518-8 Stainless Steel
    1"Spring Plunger Driver
    84975A6200003382A150000
    5/16"-18
    0.188"0.135"1.54.5Black-Oxide Steel1"Spring Plunger Driver
    8490A7400003382A150000
    5/16"-18
    0.188"0.135"31518-8 Stainless Steel
    1"Hex
    8476A390000———0
    5/16"-18
    0.188"0.135"31518-8 Stainless Steel
    1"Spring Plunger Driver
    84975A6400003382A150000
    5/16"-18
    0.188"0.135"315Black-Oxide Steel1"Spring Plunger Driver
    8490A6200003382A150000
     
    316 Stainless Steel Nose
    5/16"-18
    0.084"0.135"1.54316 Stainless Steel
    0.56"Spring Plunger Driver
    Slotted
    8688A35000003382A150000
    5/16"-18
    0.188"0.135"315316 Stainless Steel
    1"Spring Plunger Driver
    8688A18000003382A150000
     
    Brass Nose
    5/16"-18
    0.084"0.135"1.54Brass0.56"Spring Plunger Driver
    Slotted
    8689A35000003382A150000
    5/16"-18
    0.188"0.135"315Brass1"Spring Plunger Driver
    8689A18000003382A150000
     
    Acetal Nose
    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
     

    Spring Plunger Drivers

    Image of Product. Front orientation. Spring Plunger Drivers.
    Install spring plungers from the nose end without depressing the nose.
    For Thread
    Size
    For Spring
    Plunger Nose Type
    Each
    Steel
    5/16"-18, M8
    Ball, Long3382A1500000
     

    Add-a-Handle Retractable Spring Plungers

    Image of Product. Front orientation. Spring Plungers. Add-a-Handle Retractable Spring Plungers.
    Image of Attribute. Front orientation. Contains Annotated. Add-a-Handle Retractable Spring Plungers.
    Customize these spring plungers with a handle (not included) that's the size, shape, texture, and color you want. Retractable spring plungers give you the control to position, align, and lock components as needed for your job.
    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.
    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 End
    Thread
    Twist-to-Lock
    Thread
    Size
    Thread
    Lg.
    Extended
    Lg.
    Dia.
    Extended
    Compressed
    Material
    Lg.
    Size
    Lg.
    Each
    Steel Nose
    5/16"-18
    0.63"0.188"0.155"1.56Steel1.25"1/4"-20
    11/32"7805A13000000
     
    18-8 Stainless Steel Nose
    5/16"-18
    0.63"0.188"0.155"1.5618-8 Stainless Steel
    1.25"1/4"-20
    11/32"7806A1300000
     

    Spring Plunger Mounts

    Image of Product. Front orientation. Spring Plunger Mounts. Style A.
    Image of Attribute. Front orientation. Contains Annotated. Style A.

    Style A

    Style A

    Mount ball-nose and long-nose spring plungers to fixture surfaces. Insert the plunger into the threaded hole. They're good for horizontal applications. Fasteners are not included.
    Steel—Steel mounts are strong and wear resistant.
    18-8 Stainless Steel—18-8 stainless steel mounts are chemical resistant and may be mildly magnetic.
    Mounting
    Holes
    Steel
    18-8
    Stainless Steel
    Thread
    Size
    Lg.
    Wd.
    Ht.
    Dia.
    Ctr.-to-Ctr.
    Each
    Each
    Style A
    5/16"-18
    5/8"15/16"13/32"0.141"0.702"8685A160000001942A44000000
     

    Low-Profile Knob-Grip Retractable Spring Plungers

    Image of Product. Front orientation. Contains Annotated. Spring Plungers. Low-Profile Knob-Grip Retractable Spring Plungers.
    With the sleekest knob we offer, these fit in areas with low clearance, such as in between conveyors. They tighten with a hex key for installation in cramped spots where your fingers might not reach. Tug the knob back to manually retract the nose so you can 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.
    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.
    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
    Dia.
    Drive
    Style
    Each
    Steel Nose
    5/16"-18
    0.8"0.187"0.154"16Steel1.07"Zinc-Yellow-Chromate-Plated Steel7/8"Hex
    2375A32000000
     
    18-8 Stainless Steel Nose
    5/16"-18
    0.8"0.187"0.154"1618-8 Stainless Steel
    1.07"18-8 Stainless Steel
    7/8"Hex
    2375A3600000
     

    Add-a-Handle Quick-Release Pins

    Customize these pins with a knob or handle (not included) that's the size, shape, texture, and color you want. Pins have a retaining ball that holds them in place until you pull to remove.
    Corrosion-Resistant Stainless Steel
    Image of Product. Front orientation. Contains Annotated. Quick-Release Pins. Add-a-Handle Quick-Release Pins.
    18-8 Stainless Steel—The choice for wet and outdoor environments, these pins resist rusting. They are strong enough to join most components but won't withstand stress and vibration as well as steel.
    Thread
    Usable
    Lg.
    Dia. at Extended
    Ball Ht.
    Size
    Lg.
    Single Shear Breaking
    Strength, lbf
    Min.
    Hardness
    Ball Material
    Each
    18-8 Stainless Steel
     
    5/16" Diameter
    1"0.356"5/16"-18
    3/8"7,200Rockwell B85Stainless Steel
    93460A25000000
    1 1/2"0.356"5/16"-18
    3/8"7,200Rockwell B85Stainless Steel
    93460A2550000
     
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