1/4"-20 Plungers | McMaster-Carr

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	System of Measurement System of Measurement

Inch

Metric

	Thread Size Thread Size	Show

1/4"-20

	Thread Size Thread Size	Hide

	Nose Material Nose Material

	Body Type Body Type

	Threaded

	Nose Type Nose Type


Long	Ball

Hex

	Locking Type Locking Type


Without Thread Locker	Thread Locker

	Body Material Body Material

	Body Length Body Length

	Nose Diameter Nose Diameter

	Extended Nose Length Extended Nose Length

	Handle Type Handle Type


Knob	L-Handle

Pull Ring	T-Handle

Add a Knob

	Thread Length Thread Length

	Extended Nose Force Extended Nose Force

Less than 1 lbs.

1 to 1.99 lbs.

2 to 4.99 lbs.

	Compressed Nose Force Compressed Nose Force

Less than 10 lbs.

10 to 19.9 lbs.

	Drive Style Drive Style


Slotted	Hex

External Hex	Spring Plunger Wrench

	Handle Material Handle Material

	Handle Locking Type Handle Locking Type

Nonlocking

Twist-to-Lock

	Thread Type Thread Type

UNC

	Thread Spacing Thread Spacing

Coarse

	DFARS (Defense Acquisition Regulations Supplement) DFARS (Defense Acquisition Regulations Supplement)

DFARS Specialty Metals
COTS-Exempt

	RoHS (Restriction of Hazardous Substances) RoHS (Restriction of Hazardous Substances)

RoHS Compliant

RoHS Compliant with
Exemptions

	REACH (Registration, Evaluation, Authorization and Restriction of Chemicals) REACH (Registration, Evaluation, Authorization and Restriction of Chemicals)

REACH Compliant

	Body Finish Body Finish

139 Products

Spring Plungers

Knob-Style Retractable Spring Plungers

Retract the nose by pulling the knob.

Twist-to-Lock Knob-Style Retractable Spring Plungers

Lock the nose into the retracted position by pulling the knob and rotating it 90°.

Pull-Ring Retractable Spring Plungers

The ring allows you to attach these spring plungers to a lanyard.

Twist-to-Lock Pull-Ring Retractable Spring Plungers

Lock the nose into the retracted position by pulling the ring and rotating it 90°.

Pull-Ring Retractable Spring Plungers with Lanyard

Use the lanyard as a tether to secure the spring plunger to machinery and prevent accidental drops.

Twist-to-Lock L-Handle Retractable Spring Plungers

Lock the nose into the retracted position by pulling the handle and rotating it 90°.

L-Handle Retractable Spring Plungers

T-Handle Retractable Spring Plungers

Add-a-Knob Retractable Spring Plungers

Thread onto machinery or attach a knob or handle to the threaded spindle.

Low-Profile Knob-Style Retractable
Spring Plungers with Hex Drive

Install by hand or with a hex key in low-clearance applications.

Slotted Ball-Nose Spring Plungers

Install these spring plungers with a screwdriver—they're slotted on one or both ends.

Hex-Drive Ball-Nose Spring Plungers

Install with a hex key for more torque than slotted ball-nose spring plungers.

Long-Nose Spring Plungers

Install with a driver.

Hex-Drive Long-Nose Spring Plungers

Install with a hex key for more torque than slotted long-nose spring plungers.

Slotted Long-Nose Spring Plungers

Slotted on both ends for installation with a screwdriver.

Long Hex-Nose Spring Plungers

Fasten from the nose end with a wrench for more torque than slotted long-nose spring plungers.

Drivers for Spring Plungers

Install spring plungers from the nose end without depressing the nose.

Mounting Bases for Spring Plungers

Mount ball-nose and long-nose spring plungers to fixture surfaces.

Create-Your-Own Spring-Loaded Guide Pins

Thread in a screw, handle, or other part to create the right size and shape guide pin for your application.

Spring Plungers

Knob-Style Retractable Spring Plungers

Twist-to-Lock Knob-Style Retractable Spring Plungers

Pull-Ring Retractable Spring Plungers

Twist-to-Lock Pull-Ring Retractable Spring Plungers

Pull-Ring Retractable Spring Plungers with Lanyard

Twist-to-Lock L-Handle Retractable Spring Plungers

L-Handle Retractable Spring Plungers

T-Handle Retractable Spring Plungers

Add-a-Knob Retractable Spring Plungers

Low-Profile Knob-Style RetractableSpring Plungers with Hex Drive

Slotted Ball-Nose Spring Plungers

Hex-Drive Ball-Nose Spring Plungers

Long-Nose Spring Plungers

Hex-Drive Long-Nose Spring Plungers

Slotted Long-Nose Spring Plungers

Long Hex-Nose Spring Plungers

Drivers for Spring Plungers

Mounting Bases for Spring Plungers

Create-Your-Own Spring-Loaded Guide Pins

Create-Your-Own Spring-Loaded Guide Pins

Low-Profile Knob-Style Retractable
Spring Plungers with Hex Drive