T-Slot Clamps | McMaster-Carr

	System of Measurement System of Measurement

Inch

Metric

	For Stud Diameter For Stud Diameter

	Thread Size Thread Size

	Clamping Action Clamping Action

	Hold Down
	Push Only

	Length Length

	Width Width

	For Slot Width For Slot Width

	Material Material

	T-Slot Nut Base Width T-Slot Nut Base Width

	Height Height

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

RoHS Compliant

RoHS Compliant with
Exemptions

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

DFARS Specialty Metals
COTS-Exempt

	Container Type Container Type

Wall-Mount Plastic Holder

Wall-Mount Steel Holder

Wood Stand and Steel Tray

	Slot Length Slot Length

	For Maximum Workpiece Thickness For Maximum Workpiece Thickness

	Step Block Width Step Block Width

1 1/2"

25mm

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

REACH Compliant

	Minimum Step Block Height Minimum Step Block Height

3/4"

1 3/4"

19mm

	Edge-to-Slot Length Edge-to-Slot Length

	Maximum Step Block Height Maximum Step Block Height

152mm

	Number of Pieces Number of Pieces

	For T-Slot Width For T-Slot Width

	Jaw Style Jaw Style

Standard

Low Profile

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174 Products

Machine Table Clamps

Self-Supporting Setup Clamps

Eliminating the need for step blocks or other rear support, the pivoting rocker clamps workpieces of various thicknesses.

Setup Clamps

Use with T-slot nuts or bolts and a support to secure a workpiece, vise, or fixture to a machine table.

Setup Clamps with Threaded Hole

Instead of a step block, support these clamps using a screw, leveling mount, or any other threaded object.

Step Setup Clamps

The stepped end provides support and quick height adjustment when paired with a step block.

Economy Setup Clamp and T-Slot Fastener Kits

Good for occasional machining, economy kits contain lower-strength components than standard kits.

Setup Clamp and T-Slot Fastener Kits

Get everything needed for basic workholding on a machine table.

Low-Profile Setup Clamps

The offset shape provides more clearance above the nut than standard clamps. Also known as gooseneck clamps.

Low-Profile Setup Clamps with Threaded Hole

Designed to provide more clearance above the nut than standard clamps, these have an offset shape. Also known as gooseneck clamps.

Dual-Clamping Low-Profile Setup Clamps

Position these clamps between two workpieces, vises, or fixtures and secure both to your machine table using T-slot nuts or bolts.

Step Blocks

Use these blocks to support setup clamps. Fit the nonslip steps together for quick height adjustments.

Nonmarring Setup Clamps

A plastic pad on the gripping surface of these clamps prevents workpiece marring, making them useful for holding polished surfaces and reducing the need for secondary finishing steps.

Fingertip Setup Clamps

Making minimal contact with the workpiece while holding securely, these clamps are good for small parts and can clamp into holes and notches.

Setup Clamp Supports

Keep setup clamps from falling out of position when they are unclamped—the spring holds them up for quick workpiece insertion and removal. Also known as spring lifters.

Setup Clamps for Angled Workpieces

Unlike other setup clamps that grip the horizontal surface of a workpiece, these clamps have a pivoting ball in the tip to get a firm hold on angled parts.

Side Clamps

Also known as toe clamps, these grip the side of a workpiece to leave the top free for machining.

T-Slot Side Clamps

The built-in T-slot nut on these side clamps lets you clamp a part to a machine table quickly. Their small footprint leaves more free space on your table than standard side clamps.

Hold-Down Machine Table Clamps

An alternative to setup clamps, these heavy duty clamps have high holding power to secure workpieces during machining.

Vise Mounting Clamps

Smaller than standard setup clamps, these clamps leave more usable space on a machine table when mounting a vise.

Machine Table Clamps for Round Workpieces

Use these clamps to hold large round parts for machining. Each clamp comes with five lengths of chain that combine to accommodate different size workpieces.

T-Slot Blocks

Mount these versatile blocks to any flat surface for machine table-style T-slot clamping. They can also be used on a machine table to clamp parts at specific angles or add more total clamping points.