Workstops | McMaster-Carr

	Mount Type Mount Type

	Material Material

	System of Measurement System of Measurement

Inch

Metric

	Length Length

	Width Width

	Height Height

	Diameter Diameter

	Thread Size Thread Size

	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 with
Exemptions

RoHS Compliant

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

REACH Compliant

	Stud Diameter Stud Diameter

	For Mounting Screw Size For Mounting Screw Size

	Shape Shape

Hex

Round

	Stud Length Stud Length

	Thread Length Thread Length

	Maximum Spring Force Maximum Spring Force

	Number of Mounting Holes Number of Mounting Holes

	Head Material Head Material

Steel

Plastic

Stainless Steel

	Face Material Face Material

Steel

Plastic

Stainless Steel

	Body Material Body Material

Aluminum

Steel

Plastic

	Body Diameter Body Diameter

	Plunger Travel Plunger Travel

279 Products

Locators, Supports, and Stops

Machine Table Workstops

The T-nut base secures the workstop into the slots of a machine table for positioning parts that extend beyond the jaws of your vise.

Adjustable Side Stops

Adjust the horizontal screw to hold workpieces of varying sizes in precise positions.

Spring-Loaded Work Supports

Slide these low-profile supports under a workpiece to provide support and reduce vibration.

Threaded Locating and Support Buttons

Use these buttons to support and position workpieces and fixtures from the bottom or side. Their hex shape lets you screw them into a threaded hole with a wrench or socket.

Screw-Mount Locating and Support Buttons

Mount through the counterbored hole with a socket head cap screw to support and position workpieces and fixtures from the bottom or side.

Press-Fit Locating and Support Buttons

Support and position workpieces and fixtures from the bottom or side. These buttons press into a drilled hole for permanent installation.

Swiveling Locating and Support Buttons

The swiveling tip supports uneven and angled surfaces.

Domed-Head Locating and Support Buttons

Support rounded or irregularly shaped workpieces from the bottom or side with minimal contact.

Spring-Loaded Guide Plungers

As the face of these plungers is pushed in, the internal spring applies outward pressure to hold a workpiece in position against stops and rails.

Spring-Loaded Guide Plungers for Thin Workpieces

Set the tang in a slot below the work surface to prevent thin material from sliding underneath the face.

Sealed Spring-Loaded Guide Pins

Sealed at the top to prevent debris from getting inside and making them seize up, these guide pins are a good choice for machining fixtures.

Spring-Loaded Guide Pins

As the workpiece pushes against the pin head in one direction, the internal spring pushes back to hold it in place for clamping.

Threaded Spring-Loaded Guide Pins

Threading makes these guide pins easier to remove and replace than press fit, so they're useful for high-wear applications.

Locating and Support Pads

With a larger contact surface than locating and support buttons, these pads can support large workpieces and fixtures. They're also known as rest pads.

Installation Tools for Spring-Loaded Guide Pins

Use these tools for easier guide pin installation.

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.

Locating Rails

For locating the side of a workpiece without milling a permanent slot into your fixture, screw these easily repositioned rails into threaded holes.

High-Precision Index Plungers

To align two parts with more precision than standard spring plungers, these index plungers have a mating bushing that improves alignment and repeatability.

Workstops for Machine Vises

Clamp-On Workstops for Machine Vises

Keep parts in position for machining by mounting these workstops to your vise jaws.

Magnetic-Mount Workstops for Machine Vises

Attach these workstops to the side or top of your vise to keep parts in position for machining.

Slot-Mount Workstops for Machine Vises

Mount these workstops into slotted vise jaws—they hold workpieces in place and prevent horizontal movement during machining.