Jaw Caps

Jaw caps are protective accessories that cover vise jaws to help reduce marring and distortion while clamping workpieces. Used by machinists, maintenance teams, and shop users, they support temporary workholding and, with copper caps, can suit temporary or permanent work-holding tasks where protecting the material finish matters.

Product Display:
Helpful Buying Guide

Choose jaw caps for the workpiece and vise jaw

The right jaw cap starts with the width of your vise jaws, then the contact surface and profile needed for the pieces you clamp. This category includes protective copper, rubber-face, fiber-faced, aluminum, and prism-style options for helping hold workpieces while protecting both the workpiece and vise jaws.

Visual Guide

Popular examples in this category

6-Inch Copper Jaw Caps6-Inch Copper Jaw CapsWBB503892Rubber-Face Magnetic Jaw Caps for 4-Inch VisesRubber-Face Magnetic Jaw Caps for 4-Inch VisesWBB5036486-Inch Aluminum Alloy Magnetic Vise Jaw Caps6-Inch Aluminum Alloy Magnetic Vise Jaw CapsWBB503565Prism Magnetic Jaw Cap for 6-Inch Vise JawsPrism Magnetic Jaw Cap for 6-Inch Vise JawsWBB503752
Use Cases

Protect clamped surfaces

Use jaw caps when clamping tasks call for reduced marring or distortion on workpieces and vise jaws. Copper caps offer polished faces, while rubber and fiber faces are intended to help minimize marks.

How to Choose

Match jaw width and workpiece shape

Select a cap that matches the compatible vise jaw width: 4, 4-1/2, 5, 6, or 6-1/2 inches. For round or uneven pieces, compare deep V-grooves, six-groove profiles, and prism grooves.

Applications

Support temporary workholding

Magnetic caps stay positioned on vise jaws during setup and use, making them suited to temporary workholding. Copper caps with pliable extensions can support a sure-grip fit for temporary or permanent work-holding tasks.

Additional Info

Compare face materials and magnetic features

Rubber faces conform for a firm, slip-resistant grip. Fiber faces help minimize marks, while aluminum profiles provide groove-based contact options. Some magnetic designs also help reduce steel filings on the jaw-facing side.

4–6-1/2 in.Compatible jaw widths represented

Options are represented for 4, 4-1/2, 5, 6, and 6-1/2 inch vise jaws.

5Contact material types

Compare copper, synthetic rubber, laminated fiber, aluminum alloy, and hardened aluminum alloy constructions.

6 groovesProfile on select aluminum caps

Six-groove profiles provide contact options for uneven or irregular workpieces.

90°Prism groove feature

The prism jaw cap includes a 90-degree groove for marking-out and center-punching tasks.

Comparison Guide

Compare jaw cap types

Use this overview to compare the contact surface, holding features, and fit options represented in the category.

Jaw cap typeContact and holding featuresCompatible jaw widths represented
CopperPolished copper faces help reduce marring; pliable extensions support a sure-grip fit.6 in.; 6-1/2 in.
Rubber-face or fiber-faced magneticConforming synthetic rubber helps provide firm grip; laminated fiber helps minimize marks; magnetic backing holds caps on vise jaws.Rubber: 4 in., 4-1/2 in., 5 in., 6 in.; Fiber: 4 in.
Aluminum or prism magneticAluminum options offer six-groove and deep V-groove profiles; prism design adds horizontal and vertical V-grooves plus a 90-degree groove.Aluminum: 4 in., 5 in., 6 in.; Prism: 6 in.
Planning Guide

Plan the right fit before choosing

Start with vise compatibility

Match the cap to your jaw width

Jaw caps in this category are represented for 4-inch, 4-1/2-inch, 5-inch, 6-inch, and 6-1/2-inch vise jaws. Choosing the stated compatible jaw width helps ensure the cap matches the vise it is intended to cover.

  • 4-inch options include rubber-face, fiber-faced, and aluminum magnetic caps.
  • Rubber-face magnetic options are represented for 4-1/2-inch, 5-inch, and 6-inch jaws.
  • Copper caps are represented for 6-inch and 6-1/2-inch vise jaws.
Choose the contact surface

Balance protection, grip, and workpiece shape

Face material and profile affect how the cap contacts the workpiece. Rubber faces conform to help create a firm grip and limit slipping. Polished copper faces provide a smooth contact surface, and laminated fiber faces help minimize marks. Hardened aluminum options add grooves for irregular or circular pieces.

  • Use a deep V-groove to help secure round workpieces.
  • Consider six-groove profiles for uneven or irregular surfaces.
  • Choose a prism profile for horizontal and vertical V-grooves, or a 90-degree groove for marking-out and center-punching tasks.
Consider how the cap stays in place

Compare magnetic backing and pliable extensions

Many rubber-face, fiber-faced, aluminum, and prism caps use built-in permanent magnets to hold the cap on the vise jaw. Copper caps use pliable extensions for a sure-grip fit. The prism cap’s vise-side magnetic orientation is designed to help reduce steel filings collecting on the jaw surface and limit magnetization of the clamped part.

  • Magnetic backing supports positioning during setup and temporary workholding.
  • Two built-in magnets are specified on select 4-inch aluminum and fiber-faced caps.
  • Copper caps use pliable extensions rather than magnetic backing.
FAQ

Common questions before buying

What are jaw caps used for?

Jaw caps cover vise jaws to help protect workpieces and vise jaws from marring and distortion during clamping.

How do I select the correct jaw cap size?

Match the cap’s stated compatibility to your vise jaw width. Sizes represented include 4, 4-1/2, 5, 6, and 6-1/2 inches.

Which jaw caps help hold round workpieces?

Select aluminum caps with a deep V-groove or a prism jaw cap with V-grooves to help position and secure round workpieces.

How do magnetic jaw caps stay attached?

They use built-in permanent magnets that hold the caps in place on compatible vise jaws during setup and use.

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