Shim Spacers | McMaster-Carr

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5,199 Products

Round Shims

Ring Shims

Precisely align, level, and adjust spacing on fasteners and shafts with these shims.

Ring Shim Sets

Be prepared with ring shims in a variety of thicknesses. These shims fit around fasteners and shafts to precisely align, level, and adjust spacing.

Tight-Fit Ring Shims

For a snug fit around a shaft, the ID of these shims is held to a tighter tolerance than other round shims.

Wide-Rim Ring Shims

Also known as machinery bushings, these shims have an oversized OD to create a larger bearing surface for reduced wear between moving parts.

Color-Coded Ring Shims

Precisely align, level, and adjust spacing on fasteners, shafts, and machinery with these shims, which are color-coded by thickness for easy identification.

Color-Coded Ring Shim Sets

Be prepared with ring shims in a variety of thicknesses. These shims are color-coded by thickness for easy identification.

Peel-Away Layered Ring Shims

These shims are made of layers of metal bonded with adhesive. Remove layers with a utility knife until you get the thickness you need.

Shims for Shortening Screw Shoulders

Slide these shims under the screw head to shorten the shoulder length.

Shims for Lengthening Screw Shoulders

Spin these shims onto screw threads to extend the shoulder length.

Shims for Ball Bearings

Adjust spacing between bearings and other components on shafts. These shims are sized to fit the outer rim of a bearing.

Shims for Ball Bearing Housings

Also called tolerance rings, these rings are for use in stamped, molded, or worn housings to form a tight hold on the bearings.

Shims for Button Dies

Place these shims under sharpened dies to restore their original height and extend their life.

Disc Shims

Use these round shims as they are, or punch out the middle to create the ID you need.

Shims for Keyed Shafts

Precisely shaped to fit snugly on keyed shafts, these shims align, level, and space components. Because of their tight fit, they also help components rotate in unison with the shaft.

Shim Sets for Keyed Shafts

Be prepared with shims in a variety of thicknesses. Also known as arbor spacers, these shims are notched to fit over keyed shafts.

Shims for D-Profile Shafts

These shims are shaped to fit over D-profile shafts. Use them to precisely align, level, and adjust spacing.

Shim Sets for D-Profile Shafts

Be prepared with shims in a variety of thicknesses. These shims are shaped to fit over D-profile shafts. Use them to precisely align, level, and adjust spacing.

Slotted Shims

The slot lets you insert, remove, and adjust the shims without disassembling your machinery.

Slotted Shim Sets

Be prepared with slotted shims in a variety of thicknesses. The slot lets you insert, remove, and adjust the shims without disassembling your machinery.

Color-Coded Slotted Shim Sets

Keep slotted shims in a variety of thicknesses on hand with these sets, which are color-coded by thickness for easy identification. The slot lets you insert, remove, and adjust the shims without disassembling your machinery.

Color-Coded Slotted Shims

These shims are color-coded by thickness for easy identification. The slot lets you insert, remove, and adjust the shims without disassembling your machinery.

Large-Adjustment Slotted Shims

Use these thick shims to align cabinets, doors, and windows, or for other rough leveling.

Breakaway Slotted Shims

These shims are scored so you can easily shorten them to the length you need. Designed to fit around screws, they are commonly used in window, door, and cabinet installations.

Color-Coded Horseshoe Shims

These shims are color-coded by thickness for easy identification. The horseshoe design fits around screws.

Horseshoe Shims

Align cabinets, doors, and windows with these shims. The horseshoe design fits around screws.

Interlocking Color-Coded Horseshoe Shims

Clips on these shims hold them together when stacked, and they are color coded by thickness for easy identification. Designed to fit around screws, they are commonly used in window, door, and cabinet installations.

Multi-Slotted Shims

Use a single shim on feet or positioning arms that are secured with multiple fasteners. The slots let you insert, remove, and adjust the shims without disassembling your machinery. Also known as finger shims.

Multi-Slotted Shim Sets

Each set includes a variety of different thicknesses, so you can use multiple shims together to create a specific thickness or make minor adjustments.

Shims for Hinges

Slide these shims behind your door’s hinge to align it in the jamb.

Shim Stock

Cut this stock into custom shapes to fit your application.

Shim Tape

Level dies, plates, presses, and other machine tools—this shim tape conforms to curves and uneven surfaces.

Adhesive-Back Shim Stock

A durable acrylic adhesive keeps this shim stock from sliding out of place. Cut it into custom shapes to fit your application.

Shim Stock Sets

Keep shim stock in a variety of thicknesses on hand with these sets. Cut into custom shapes to fit your application.

Color-Coded Shim Stock

This shim stock is color coded by thickness for easy identification. Cut it into custom shapes to fit your application.

Color-Coded Shim Stock Sets

Keep shim stock in a variety of thicknesses on hand with these sets, which are color coded by thickness for easy identification. Cut them into custom shapes to fit your application.

Peel-Away Layered Shim Stock

Cut this shim stock into custom shapes to fit your application. Stock is made of layers of material bonded with adhesive; remove layers with a utility knife until you get the thickness you need.

Plastic Shim Plates

Breakaway Shim Plates

These thick shims are scored to make size adjustments easy—break off the excess shim for a custom fit around fasteners or corners. Use them to align cabinets, doors, and windows, or for other rough leveling.

Slip-Resistant Shim Plates

The textured surface of these thick shims keeps them from sliding apart when stacked. Use them to align cabinets, doors, and windows, or for other rough leveling.

Tapered Shims

Ridges keep these shims from sliding apart when stacked.

Heavy Duty Tapered Shims

Ridges keep these aluminum shims from sliding apart when stacked. Designed for aligning shafts and axles, they support heavier loads than plastic tapered shims.

Breakaway Tapered Shims

Easily snap off any excess to get the length you need.

Slotted Tapered Shims

The slot lets you install these rigid shims around screws.

Made-to-Order Shims

Send us a drawing, and we'll cut your custom shim.

Made-to-Order Peel-Away Layered Shims

Send us a drawing, and we'll cut your custom shim. Shims are made of layers of metal bonded with adhesive; remove layers with a utility knife until you get the thickness you need.

Shim Assortments

Shim Stock Assortments

Create a custom shim to fit your application.

Shim Assortments for Shortening Shoulder Screws

Slide onto a shoulder screw to shorten the length of the shoulder.

Shim Assortments for Button Dies

Place these shims under sharpened dies to restore their original height and extend the life of the dies.

Shim Assortments for Lengthening Shoulder Screws

Spin these tight-fitting shims onto your screw's threads to lengthen the shoulder.

Ring Shim Assortments

Use round shims to precisely align, level, and adjust spacing on shafts and machinery.

Washer Blanks

Punch a hole to create a custom washer.

Dissolvable Shims

Use these paper shims to create a gap while welding, then spray them with water and they instantly melt away.