Keyed Metals | McMaster-Carr

Clear All

	System of Measurement System of Measurement

Inch

	ID ID

	OD OD

	Thickness Thickness

	Keyed Shim Type Keyed Shim Type


With Notch	With Tab

	Material Material

Stainless Steel

Steel

	Shape Shape	Show

	Keyed

	Shape Shape	Hide


Sheet and Bar	Rod and Disc

Round Tube	Rectangular Tube

90° Angle	U Channel

Hex Bar	Foil

T Bar	Ball

I Beam	H Bar

Wire	Z Bar

Triangular Bar	Half Round

Ribbed Sheet	Hat Channel

Hex Ingot	Honeycomb

Hex Tube	Ingot

Ring	Disc

Made to Order	Slotted

Keyed

	For Shaft Diameter For Shaft Diameter

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

RoHS Compliant

	Individual/Set Individual/Set

Individual

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

DFARS Specialty Metals
COTS-Exempt

	Magnetic Properties Magnetic Properties

Magnetic

May Be Mildly Magnetic

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

REACH Compliant

	Notch Width Notch Width

	Notch Depth Notch Depth

	Tab Depth Tab Depth

3/32"

5/32"

3/16"

	Tab Width Tab Width

79 Products

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.

Shims with a notch need the key inserted. They’re often referred to as arbor spacers.

Shims with a tab only fit without a key—the tab sits inside the keyway on the keyed shaft.

Stainless steel shims are more corrosion resistant than carbon steel shims. Use them in wet environments where rust is a concern.

Carbon steel shims are stronger than stainless steel shims, but shouldn’t be used in wet environments.

For technical drawings and 3-D models, click on a part number.

With Notch—18-8 Stainless Steel

Stainless Steel Shim with Notch

					Notch
For Shaft Dia.	ID	ID Tolerance	OD	OD Tolerance	Wd.	Dp.	Minimum Hardness	Magnetic Properties	Pkg. Qty.		Pkg.
0.001" Thick. (-0.0001" to 0.0001" Tolerance)
1/2"	1/2"	0" to 0.011"	3/4"	-0.002" to 0.002"	1/8"	3/64"	Rockwell B80	May Be Mildly Magnetic	10	000000000	000000
3/4"	3/4"	0" to 0.011"	1 1/8"	-0.002" to 0.002"	3/16"	5/64"	Rockwell B80	May Be Mildly Magnetic	10	000000000	00000
0.002" Thick. (-0.0002" to 0.0002" Tolerance)
7/8"	7/8"	0" to 0.011"	1 3/8"	-0.002" to 0.002"	3/16"	5/64"	Rockwell B80	May Be Mildly Magnetic	10	000000000	00000
1 1/4"	1 1/4"	0" to 0.011"	1 3/4"	-0.002" to 0.002"	5/16"	1/8"	Rockwell B80	May Be Mildly Magnetic	10	000000000	00000
0.003" Thick. (-0.0003" to 0.0003" Tolerance)
7/8"	7/8"	0" to 0.011"	1 3/8"	-0.002" to 0.002"	3/16"	5/64"	Rockwell B80	May Be Mildly Magnetic	10	000000000	00000
1 1/4"	1 1/4"	0" to 0.011"	1 3/4"	-0.002" to 0.002"	5/16"	1/8"	Rockwell B80	May Be Mildly Magnetic	5	000000000	00000
0.004" Thick. (-0.0004" to 0.0004" Tolerance)
1/2"	1/2"	0" to 0.011"	3/4"	-0.002" to 0.002"	1/8"	3/64"	Rockwell B80	May Be Mildly Magnetic	10	000000000	00000
3/4"	3/4"	0" to 0.011"	1 1/8"	-0.002" to 0.002"	3/16"	5/64"	Rockwell B80	May Be Mildly Magnetic	10	000000000	00000
7/8"	7/8"	0" to 0.011"	1 3/8"	-0.002" to 0.002"	3/16"	5/64"	Rockwell B80	May Be Mildly Magnetic	10	000000000	00000
1"	1"	0" to 0.011"	1 1/2"	-0.002" to 0.002"	1/4"	3/32"	Rockwell B80	May Be Mildly Magnetic	10	000000000	00000
1 1/4"	1 1/4"	0" to 0.011"	1 3/4"	-0.002" to 0.002"	5/16"	1/8"	Rockwell B80	May Be Mildly Magnetic	10	000000000	00000
1 1/2"	1 1/2"	0" to 0.011"	2 1/8"	-0.002" to 0.002"	3/8"	5/32"	Rockwell B80	May Be Mildly Magnetic	5	000000000	00000
2"	2"	0" to 0.011"	2 3/4"	-0.002" to 0.002"	1/2"	3/16"	Rockwell B80	May Be Mildly Magnetic	5	000000000	00000
0.005" Thick. (-0.0005" to 0.0005" Tolerance)
7/8"	7/8"	0" to 0.011"	1 3/8"	-0.002" to 0.002"	3/16"	5/64"	Rockwell B80	May Be Mildly Magnetic	10	000000000	00000
1 1/4"	1 1/4"	0" to 0.011"	1 3/4"	-0.002" to 0.002"	5/16"	1/8"	Rockwell B80	May Be Mildly Magnetic	10	000000000	00000
0.006" Thick. (-0.0006" to 0.0006" Tolerance)
1/2"	1/2"	0" to 0.011"	3/4"	-0.002" to 0.002"	1/8"	3/64"	Rockwell B80	May Be Mildly Magnetic	10	000000000	00000
3/4"	3/4"	0" to 0.011"	1 1/8"	-0.002" to 0.002"	3/16"	5/64"	Rockwell B80	May Be Mildly Magnetic	10	000000000	00000
7/8"	7/8"	0" to 0.011"	1 3/8"	-0.002" to 0.002"	3/16"	5/64"	Rockwell B80	May Be Mildly Magnetic	10	000000000	00000
1"	1"	0" to 0.011"	1 1/2"	-0.002" to 0.002"	1/4"	3/32"	Rockwell B80	May Be Mildly Magnetic	10	000000000	00000
1 1/4"	1 1/4"	0" to 0.011"	1 3/4"	-0.002" to 0.002"	5/16"	1/8"	Rockwell B80	May Be Mildly Magnetic	5	000000000	00000
1 1/2"	1 1/2"	0" to 0.011"	2 1/8"	-0.002" to 0.002"	3/8"	5/32"	Rockwell B80	May Be Mildly Magnetic	5	000000000	00000
2"	2"	0" to 0.011"	2 3/4"	-0.002" to 0.002"	1/2"	3/16"	Rockwell B80	May Be Mildly Magnetic	5	000000000	00000
0.007" Thick. (-0.0007" to 0.0007" Tolerance)
3/4"	3/4"	0" to 0.011"	1 1/8"	-0.002" to 0.002"	3/16"	5/64"	Rockwell B80	May Be Mildly Magnetic	10	000000000	00000
7/8"	7/8"	0" to 0.011"	1 3/8"	-0.002" to 0.002"	3/16"	5/64"	Rockwell B80	May Be Mildly Magnetic	10	000000000	00000
1"	1"	0" to 0.011"	1 1/2"	-0.002" to 0.002"	1/4"	3/32"	Rockwell B80	May Be Mildly Magnetic	10	000000000	00000
1 1/4"	1 1/4"	0" to 0.011"	1 3/4"	-0.002" to 0.002"	5/16"	1/8"	Rockwell B80	May Be Mildly Magnetic	5	000000000	00000
1 1/2"	1 1/2"	0" to 0.011"	2 1/8"	-0.002" to 0.002"	3/8"	5/32"	Rockwell B80	May Be Mildly Magnetic	5	000000000	00000
2"	2"	0" to 0.011"	2 3/4"	-0.002" to 0.002"	1/2"	3/16"	Rockwell B80	May Be Mildly Magnetic	5	000000000	00000
0.008" Thick. (-0.0008" to 0.0008" Tolerance)
3/4"	3/4"	0" to 0.011"	1 1/8"	-0.002" to 0.002"	3/16"	5/64"	Rockwell B80	May Be Mildly Magnetic	10	000000000	00000
7/8"	7/8"	0" to 0.011"	1 3/8"	-0.002" to 0.002"	3/16"	5/64"	Rockwell B80	May Be Mildly Magnetic	10	000000000	00000
1"	1"	0" to 0.011"	1 1/2"	-0.002" to 0.002"	1/4"	3/32"	Rockwell B80	May Be Mildly Magnetic	10	000000000	00000
1 1/4"	1 1/4"	0" to 0.011"	1 3/4"	-0.002" to 0.002"	5/16"	1/8"	Rockwell B80	May Be Mildly Magnetic	5	000000000	00000
1 1/2"	1 1/2"	0" to 0.011"	2 1/8"	-0.002" to 0.002"	3/8"	5/32"	Rockwell B80	May Be Mildly Magnetic	5	000000000	00000
2"	2"	0" to 0.011"	2 3/4"	-0.002" to 0.002"	1/2"	3/16"	Rockwell B80	May Be Mildly Magnetic	1	000000000	0000
0.01" Thick. (-0.001" to 0.001" Tolerance)
7/8"	7/8"	0" to 0.011"	1 3/8"	-0.002" to 0.002"	3/16"	5/64"	Rockwell B80	May Be Mildly Magnetic	10	000000000	00000
1 1/4"	1 1/4"	0" to 0.011"	1 3/4"	-0.002" to 0.002"	5/16"	1/8"	Rockwell B80	May Be Mildly Magnetic	5	000000000	00000
0.012" Thick. (-0.002" to 0.002" Tolerance)
3/4"	3/4"	0" to 0.011"	1 1/8"	-0.002" to 0.002"	3/16"	5/64"	Rockwell B80	May Be Mildly Magnetic	10	000000000	00000
7/8"	7/8"	0" to 0.011"	1 3/8"	-0.002" to 0.002"	3/16"	5/64"	Rockwell B80	May Be Mildly Magnetic	10	000000000	00000
1"	1"	0" to 0.011"	1 1/2"	-0.002" to 0.002"	1/4"	3/32"	Rockwell B80	May Be Mildly Magnetic	10	000000000	00000
1 1/4"	1 1/4"	0" to 0.011"	1 3/4"	-0.002" to 0.002"	5/16"	1/8"	Rockwell B80	May Be Mildly Magnetic	5	000000000	00000
1 1/2"	1 1/2"	0" to 0.011"	2 1/8"	-0.002" to 0.002"	3/8"	5/32"	Rockwell B80	May Be Mildly Magnetic	5	000000000	00000
2"	2"	0" to 0.011"	2 3/4"	-0.002" to 0.002"	1/2"	3/16"	Rockwell B80	May Be Mildly Magnetic	5	000000000	00000
0.015" Thick. (-0.002" to 0.002" Tolerance)
3/4"	3/4"	0" to 0.011"	1 1/8"	-0.002" to 0.002"	3/16"	5/64"	Rockwell B80	May Be Mildly Magnetic	10	000000000	00000
7/8"	7/8"	0" to 0.011"	1 3/8"	-0.002" to 0.002"	3/16"	5/64"	Rockwell B80	May Be Mildly Magnetic	10	000000000	00000
1"	1"	0" to 0.011"	1 1/2"	-0.002" to 0.002"	1/4"	3/32"	Rockwell B80	May Be Mildly Magnetic	10	000000000	00000
1 1/4"	1 1/4"	0" to 0.011"	1 3/4"	-0.002" to 0.002"	5/16"	1/8"	Rockwell B80	May Be Mildly Magnetic	10	000000000	00000
1 1/2"	1 1/2"	0" to 0.011"	2 1/8"	-0.002" to 0.002"	3/8"	5/32"	Rockwell B80	May Be Mildly Magnetic	5	000000000	00000
2"	2"	0" to 0.011"	2 3/4"	-0.002" to 0.002"	1/2"	3/16"	Rockwell B80	May Be Mildly Magnetic	5	000000000	00000
0.02" Thick. (-0.0025" to 0.0025" Tolerance)
7/8"	7/8"	0" to 0.011"	1 3/8"	-0.002" to 0.002"	3/16"	5/64"	Rockwell B80	May Be Mildly Magnetic	10	000000000	00000
1 1/4"	1 1/4"	0" to 0.011"	1 3/4"	-0.002" to 0.002"	5/16"	1/8"	Rockwell B80	May Be Mildly Magnetic	10	000000000	00000
0.024" Thick. (-0.0025" to 0.0025" Tolerance)
1"	1"	0" to 0.011"	1 1/2"	-0.002" to 0.002"	1/4"	3/32"	Rockwell B80	May Be Mildly Magnetic	10	000000000	00000
1 1/4"	1 1/4"	0" to 0.011"	1 3/4"	-0.002" to 0.002"	5/16"	1/8"	Rockwell B80	May Be Mildly Magnetic	5	000000000	00000
1 1/2"	1 1/2"	0" to 0.011"	2 1/8"	-0.002" to 0.002"	3/8"	5/32"	Rockwell B80	May Be Mildly Magnetic	5	000000000	00000
2"	2"	0" to 0.011"	2 3/4"	-0.002" to 0.002"	1/2"	3/16"	Rockwell B80	May Be Mildly Magnetic	1	000000000	0000
0.048" Thick. (-0.0035" to 0.0035" Tolerance)
1"	1"	0" to 0.011"	1 1/2"	-0.002" to 0.002"	1/4"	3/32"	Rockwell B80	May Be Mildly Magnetic	5	000000000	00000
1 1/2"	1 1/2"	0" to 0.011"	2 1/8"	-0.002" to 0.002"	3/8"	5/32"	Rockwell B80	May Be Mildly Magnetic	5	000000000	00000
2"	2"	0" to 0.011"	2 3/4"	-0.002" to 0.002"	1/2"	3/16"	Rockwell B80	May Be Mildly Magnetic	5	000000000	00000
1/8" Thick. (-0.005" to 0.005" Tolerance)
1"	1"	0" to 0.011"	1 1/2"	-0.002" to 0.002"	1/4"	3/32"	Rockwell B80	May Be Mildly Magnetic	5	000000000	00000

With Tab—1008-1010 Carbon Steel

Carbon Steel Shim with Tab

					Tab
For Shaft Dia.	ID	ID Tolerance	OD	OD Tolerance	Wd.	Dp.	Minimum Hardness	Magnetic Properties	Pkg. Qty.		Pkg.
0.005" Thick. (-0.0005" to 0.0005" Tolerance)
1"	1"	0" to 0.011"	1 1/2"	-0.005" to 0.005"	1/4"	3/32"	Rockwell B84	Magnetic	10	00000000	00000
1 1/2"	1 1/2"	0" to 0.011"	2 1/8"	-0.005" to 0.005"	3/8"	5/32"	Rockwell B84	Magnetic	10	00000000	00000
2"	2"	0" to 0.011"	2 3/4"	-0.005" to 0.005"	1/2"	3/16"	Rockwell B84	Magnetic	5	00000000	0000
0.01" Thick. (-0.00075" to 0.00075" Tolerance)
1"	1"	0" to 0.011"	1 1/2"	-0.005" to 0.005"	1/4"	3/32"	Rockwell B84	Magnetic	10	00000000	0000
1 1/2"	1 1/2"	0" to 0.011"	2 1/8"	-0.005" to 0.005"	3/8"	5/32"	Rockwell B84	Magnetic	10	00000000	00000
2"	2"	0" to 0.011"	2 3/4"	-0.005" to 0.005"	1/2"	3/16"	Rockwell B84	Magnetic	5	00000000	0000
0.015" Thick. (-0.001" to 0.001" Tolerance)
1"	1"	0" to 0.011"	1 1/2"	-0.005" to 0.005"	1/4"	3/32"	Rockwell B84	Magnetic	10	00000000	0000
1 1/2"	1 1/2"	0" to 0.011"	2 1/8"	-0.005" to 0.005"	3/8"	5/32"	Rockwell B84	Magnetic	10	00000000	00000
2"	2"	0" to 0.011"	2 3/4"	-0.005" to 0.005"	1/2"	3/16"	Rockwell B84	Magnetic	5	00000000	0000
0.02" Thick. (-0.001" to 0.001" Tolerance)
1"	1"	0" to 0.011"	1 1/2"	-0.005" to 0.005"	1/4"	3/32"	Rockwell B84	Magnetic	10	00000000	0000
1 1/2"	1 1/2"	0" to 0.011"	2 1/8"	-0.005" to 0.005"	3/8"	5/32"	Rockwell B84	Magnetic	10	00000000	00000
2"	2"	0" to 0.011"	2 3/4"	-0.005" to 0.005"	1/2"	3/16"	Rockwell B84	Magnetic	5	00000000	0000
0.031" Thick. (-0.0015" to 0.0015" Tolerance)
1"	1"	0" to 0.011"	1 1/2"	-0.005" to 0.005"	1/4"	3/32"	Rockwell B84	Magnetic	10	00000000	0000
1 1/2"	1 1/2"	0" to 0.011"	2 1/8"	-0.005" to 0.005"	3/8"	5/32"	Rockwell B84	Magnetic	10	00000000	00000
2"	2"	0" to 0.011"	2 3/4"	-0.005" to 0.005"	1/2"	3/16"	Rockwell B84	Magnetic	5	00000000	0000
0.062" Thick. (-0.0025" to 0.0025" Tolerance)
1"	1"	0" to 0.011"	1 1/2"	-0.005" to 0.005"	1/4"	3/32"	Rockwell B84	Magnetic	10	00000000	00000
1 1/2"	1 1/2"	0" to 0.011"	2 1/8"	-0.005" to 0.005"	3/8"	5/32"	Rockwell B84	Magnetic	5	00000000	0000
2"	2"	0" to 0.011"	2 3/4"	-0.005" to 0.005"	1/2"	3/16"	Rockwell B84	Magnetic	5	00000000	0000
1/8" Thick. (-0.003" to 0.003" Tolerance)
1"	1"	0" to 0.011"	1 1/2"	-0.005" to 0.005"	1/4"	3/32"	Rockwell B84	Magnetic	5	00000000	0000
1 1/2"	1 1/2"	0" to 0.011"	2 1/8"	-0.005" to 0.005"	3/8"	5/32"	Rockwell B84	Magnetic	5	00000000	00000
2"	2"	0" to 0.011"	2 3/4"	-0.005" to 0.005"	1/2"	3/16"	Rockwell B84	Magnetic	1	00000000	0000