McMaster-Carr logo
    Enter e-mail addresses in the fields below
    Message
    Cancel
    Comments
    E-mail address (if you would like a response)
    27 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
    3/4"-10
    1.13"0.45"0.375"1.516Black-Oxide Steel2.15"Steel1 1/2"———00000000000000
    3/4"-10
    1.13"0.45"0.375"1.516Zinc-Plated Steel2.15"Steel1 1/2"———000000000000000
    3/4"-10
    1.2"0.45"0.375"1.516Zinc-Plated Steel2"Steel1 1/2"00000000000000———0
     
    18-8 Stainless Steel Nose
    3/4"-10
    1.13"0.45"0.375"1.51618-8 Stainless Steel
    2.15"18-8 Stainless Steel
    1 1/2"———00000000000000
     
    316 Stainless Steel Nose
    3/4"-10
    1.13"0.45"0.375"1.516316 Stainless Steel
    2.15"316 Stainless Steel
    1 1/2"———0000000000000
    3/4"-10
    1.2"0.45"0.375"1.516316 Stainless Steel
    2.01"316 Stainless Steel
    1 1/2"000000000000———0
     
    Brass Nose
    3/4"-10
    1"0.45"0.375"1.516Brass2.01"Brass1 1/2"000000000000———0
    3/4"-10
    1.13"0.45"0.375"1.516Brass2.15"Brass1 1/2"———0000000000000
    3/4"-10
    1.2"0.45"0.375"1.516Brass2.01"Brass1 1/2"000000000000———0
     
    Acetal Nose
    3/4"-10
    1.13"0.45"0.375"1.51618-8 Stainless Steel
    2.15"18-8 Stainless Steel
    1 1/2"———0000000000000
     

    Ring-Grip Retractable Spring Plungers

    Image of Product. Spring Plunger. Front orientation. Contains Annotated. Spring Plungers. Ring-Grip Retractable Spring Plungers.

    Spring Plunger

    Loop a lanyard through the ring to secure these spring plungers to machinery and prevent accidental drops. Pull the ring 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.
    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.
    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
    3/4"-10
    0.88"0.5"0.437"1.56Zinc-Plated Steel1.5"Steel1 1/8"0000000000000———0
     
    18-8 Stainless Steel Nose
    3/4"-10
    0.88"0.5"0.437"1.5618-8 Stainless Steel
    1.5"18-8 Stainless Steel
    1 1/8"000000000000———0
     
    316 Stainless Steel Nose
    3/4"-10
    0.88"0.5"0.437"1.56316 Stainless Steel
    1.5"316 Stainless Steel
    1 1/8"0000000000000000000000000
    3/4"-10
    2.69"0.65"0.43"510316 Stainless Steel
    4.06"316 Stainless Steel
    1.4"000000000000000000000000
     
    Brass Nose
    3/4"-10
    0.88"0.5"0.437"1.56Brass1.5"Steel1 1/8"000000000000000000000000
    3/4"-10
    2.69"0.65"0.43"510Brass4.06"Steel1.4"000000000000000000000000
     

    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.
    Spring Plungers
    Spring
    Plunger Drivers
    Nose
    Nose
    Force, lbf
    Body
    Thread
    Size
    Extended
    Lg.
    Wd.
    Dia.
    Extended
    Compressed
    Material
    Lg.
    Drive Style
    Each
    Each
    Steel Nose
    3/4"-10
    0.312"0.374"416Black-Oxide Steel1.75"Spring Plunger Driver
    00000000000000000000000000
    3/4"-10
    0.313"0.374"6.737.3Black-Oxide Steel1.75"Spring Plunger Driver
    000000000000000000000000
    3/4"-10
    0.313"0.375"6.737.3Black-Oxide Steel1.75"External Hex
    000000000000———0
     
    18-8 Stainless Steel Nose
    3/4"-10
    0.313"0.374"6.737.318-8 Stainless Steel
    1.75"Spring Plunger Driver
    0000000000000000000000000
    3/4"-10
    0.313"0.374"6.737.3Black-Oxide Steel1.75"Spring Plunger Driver
    000000000000000000000000
     

    Long-Nose Spring Plungers For Ejecting

    Image of Product. Front orientation. Spring Plungers. Long-Nose Spring Plungers For Ejecting.
    Image of Attribute. Front orientation. Contains Annotated. Long-Nose Spring Plungers For Ejecting.
    Punch large parts free from presses or dies with a nose that’s three times longer than others. These spring plungers also have a long spring that doesn’t need to compress as far to retract the nose, so it can handle high speed, repetitive ejecting jobs without wearing down.
    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.
    Nose
    Nose
    Force, lbf
    Body
    Thread
    Size
    Extended
    Lg.
    Wd.
    Extended
    Compressed
    Material
    Lg.
    Drive Style
    Each
    Steel Nose
    3/4"-10
    1"0.375"435Black-Oxide Steel3.75"External Hex
    00000000000000
     

    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
    3/4"-10
    Ball, Long0000000000000
     

    Vacuum Cups

    Image of Product. Front orientation. Vacuum Cups. Female.
    Image of Attribute. Front orientation. Contains Annotated. Female.

    Female

    Female

    Use cups with a vacuum system to grip, lift, and move flat materials, such as sheet metal and plastic. Cups with diameters larger than 5 1/2" have threaded mounting holes in addition to the threaded air port.
    Warning: Never use to lift people or items over people.
    Buna-N Cups—Buna-N cups are abrasion resistant and have better oil resistance than vinyl plastic cups.
    Temp.,
    ° F
    Female
    Wt. Cap. @ Vacuum
    Cup
    Dia.
    Compressed
    Cup Ht.
    Cup
    Ht.
    Pipe
    Size
    Thread
    Type
    For Use With
    Min.
    Max.
    Overall
    Ht.
    Each
    For Smooth Surfaces
     
    Buna-N Cups
    275 lb. @ 24 in. Hg10.00"0.94"1.40"3/8
    NPT
    Sheet Metal, Plastic-402301.96"000000000000000
     
    back to top