0.008" Shims | McMaster-Carr

You can stack multiple shims to achieve your exact thickness, but stacking more than four may cause them to shift. Remember, fewer shims are better, so a couple of thicker shims are more stable than a bunch of thin shims.

18-8 Stainless Steel—The choice for wet and outdoor environments, these shims resist rust. However, they’ll corrode or pit when exposed to salt water and chemicals.

Highly Corrosion-Resistant 316 Stainless Steel—Superior to 18-8 stainless steel, these shims won't degrade when exposed to harsh weather, salt water, and most chemicals.

Carbon Steel—Best for dry environments since moisture will cause these shims to rust.

Brass—With a warm, polished look, these shims are often chosen for their appearance. Similar to 18-8 stainless steel, brass is corrosion resistant enough to stand up to wet environments.

Material Certificate—Shims include a report with a traceable lot number.

	Thk.	Thk. Tolerance	ID Tolerance	OD Tolerance	Min. Hardness	Certificate Type	Specs. Met	Pkg. Qty.		Pkg.
18-8 Stainless Steel







				1/32" ID × 7/64" OD

				0.008"	-0.0005" to 0.0005"	0" to 0.005"	-0.005" to 0.005"	Rockwell B70	Material Certificate	—	25	99040A907	000000




						3/64" ID × 1/8" OD

						0.008"	-0.0005" to 0.0005"	0" to 0.005"	-0.005" to 0.005"	Rockwell B70	—	—	25	99040A927	00000




								1/16" ID × 5/32" OD

								0.008"	-0.0005" to 0.0005"	0" to 0.005"	-0.005" to 0.005"	Rockwell B70	—	—	25	99040A947	00000




										5/64" ID × 5/32" OD

										0.008"	-0.0005" to 0.0005"	0" to 0.005"	-0.005" to 0.005"	Rockwell B70	—	—	25	99040A008	00000




												3/32" ID × 13/64" OD

												0.008"	-0.0005" to 0.0005"	0" to 0.005"	-0.005" to 0.005"	Rockwell B70	—	—	25	99040A208	00000




														1/8" ID × 3/16" OD

														0.008"	-0.0005" to 0.0005"	0" to 0.005"	-0.005" to 0.005"	Rockwell B70	—	—	25	99040A308	00000




																3/16" ID × 1/4" OD

																0.008"	-0.0005" to 0.0005"	0" to 0.005"	-0.005" to 0.005"	Rockwell B70	Material Certificate	—	25	99040A408	00000




																		1/4" ID × 3/8" OD

																		0.008"	-0.0008" to 0.0008"	0" to 0.011"	-0.002" to 0.002"	Rockwell B70	—	ASTM A240	10	98126A406	0000


																		0.008"	-0.0005" to 0.0005"	0" to 0.005"	-0.005" to 0.005"	Rockwell B70	—	—	25	99040A508	00000




																		5/16" ID × 1/2" OD

																		0.008"	-0.0005" to 0.0005"	0" to 0.005"	-0.005" to 0.005"	Rockwell B70	—	—	25	99040A608	00000




																		11/32" ID × 13/16" OD

																		0.008"	-0.0008" to 0.0008"	0" to 0.011"	-0.002" to 0.002"	Rockwell B70	—	ASTM A240	10	98126A409	0000




																		3/8" ID × 9/16" OD

																		0.008"	-0.0005" to 0.0005"	0" to 0.005"	-0.005" to 0.005"	Rockwell B70	—	—	25	99040A708	00000




																		3/8" ID × 5/8" OD

																		0.008"	-0.0008" to 0.0008"	0" to 0.011"	-0.002" to 0.002"	Rockwell B70	—	ASTM A240	10	98126A412	0000




																		1/2" ID × 3/4" OD

																		0.008"	-0.0008" to 0.0008"	0" to 0.011"	-0.002" to 0.002"	Rockwell B70	—	ASTM A240	10	98126A415	00000


										0.008"	-0.0005" to 0.0005"							0" to 0.005"	-0.005" to 0.005"	Rockwell B70	Material Certificate	—	25	99040A808	00000




												5/8" ID × 1" OD

												0.008"	-0.0008" to 0.0008"					0" to 0.011"	-0.002" to 0.002"	Rockwell B70	—	ASTM A240	10	98126A418	00000




																		3/4" ID × 1 1/8" OD

														0.008"	-0.0008" to 0.0008"			0" to 0.011"	-0.002" to 0.002"	Rockwell B70	—	ASTM A240	10	98126A421	00000




																		7/8" ID × 1 3/8" OD

																0.008"	-0.0008" to 0.0008"	0" to 0.011"	-0.002" to 0.002"	Rockwell B70	—	ASTM A240	10	98126A424	00000




																		1" ID × 1 1/2" OD

																		0.008"	-0.0008" to 0.0008"	0" to 0.011"	-0.002" to 0.002"	Rockwell B70	—	ASTM A240	5	98126A427	00000




																		1 1/8" ID × 1 5/8" OD

																		0.008"	-0.0008" to 0.0008"	0" to 0.011"	-0.002" to 0.002"	Rockwell B70	—	ASTM A240	5	98126A430	00000




																		1 1/4" ID × 1 3/4" OD

																		0.008"	-0.0008" to 0.0008"	0" to 0.011"	-0.002" to 0.002"	Rockwell B70	—	ASTM A240	5	98126A433	00000




																		1 3/8" ID × 1 7/8" OD

																		0.008"	-0.0008" to 0.0008"	0" to 0.011"	-0.002" to 0.002"	Rockwell B70	—	ASTM A240	5	98126A436	00000




																		1 1/2" ID × 2 1/8" OD

																		0.008"	-0.0008" to 0.0008"	0" to 0.011"	-0.002" to 0.002"	Rockwell B70	—	ASTM A240	5	98126A439	00000




																		1 3/4" ID × 2 3/4" OD

																		0.008"	-0.0008" to 0.0008"	0" to 0.011"	-0.002" to 0.002"	Rockwell B70	—	ASTM A240	5	98126A442	00000




											2" ID × 2 3/4" OD

											0.008"								-0.0008" to 0.0008"	0" to 0.011"	-0.002" to 0.002"	Rockwell B70	—	ASTM A240	5	98126A445	00000


											Highly Corrosion-Resistant 316 Stainless Steel







																				3/32" ID × 13/64" OD

														0.008"						-0.0005" to 0.0005"	0" to 0.005"	-0.005" to 0.005"	Rockwell B90	—	—	10	90917A337	00000




																				1/8" ID × 3/16" OD

																0.008"				-0.0005" to 0.0005"	0" to 0.005"	-0.005" to 0.005"	Rockwell B90	—	—	10	90917A427	00000




3/16" ID × 1/4" OD

0.008"	-0.0005" to 0.0005"																			0" to 0.005"	-0.005" to 0.005"	Rockwell B90	—	—	10	90917A527	00000




																				1/4" ID × 3/8" OD

		0.008"	-0.0005" to 0.0005"																	0" to 0.005"	-0.005" to 0.005"	Rockwell B90	Material Certificate	—	10	90917A627	00000




																				5/16" ID × 1/2" OD

				0.008"	-0.0005" to 0.0005"															0" to 0.005"	-0.005" to 0.005"	Rockwell B90	—	—	10	90917A727	00000




																				3/8" ID × 9/16" OD

						0.008"	-0.0005" to 0.0005"													0" to 0.005"	-0.005" to 0.005"	Rockwell B90	—	—	10	90917A827	00000




																				1/2" ID × 3/4" OD

								0.008"	-0.0005" to 0.0005"											0" to 0.005"	-0.005" to 0.005"	Rockwell B90	Material Certificate	—	10	90917A927	00000


								Carbon Steel







																				1/4" ID × 3/8" OD

																				0.008"	-0.00075" to 0.00075"	0" to 0.011"	-0.002" to 0.002"	Rockwell B65	—	—	10	3088A289	0000




																				3/8" ID × 5/8" OD

												0.008"								-0.00075" to 0.00075"	0" to 0.011"	-0.002" to 0.002"	Rockwell B65	—	—	10	3088A291	0000




																				1/2" ID × 3/4" OD

														0.008"						-0.00075" to 0.00075"	0" to 0.011"	-0.002" to 0.002"	Rockwell B65	—	—	10	3088A292	0000




																				5/8" ID × 1" OD

																0.008"				-0.00075" to 0.00075"	0" to 0.011"	-0.002" to 0.002"	Rockwell B65	—	—	10	3088A293	0000




3/4" ID × 1 1/8" OD

0.008"	-0.00075" to 0.00075"																			0" to 0.011"	-0.002" to 0.002"	Rockwell B65	—	—	10	3088A294	0000




																				7/8" ID × 1 3/8" OD

		0.008"	-0.00075" to 0.00075"																	0" to 0.011"	-0.002" to 0.002"	Rockwell B65	—	—	10	3088A295	0000




																				1" ID × 1 1/2" OD

				0.008"	-0.00075" to 0.00075"															0" to 0.011"	-0.002" to 0.002"	Rockwell B65	—	—	10	3088A296	0000




																				1 1/8" ID × 1 5/8" OD

						0.008"	-0.00075" to 0.00075"													0" to 0.011"	-0.002" to 0.002"	Rockwell B65	—	—	10	3088A297	0000




																				1 1/4" ID × 1 3/4" OD

								0.008"												-0.00075" to 0.00075"	0" to 0.011"	-0.002" to 0.002"	Rockwell B65	—	—	10	3088A298	0000




										1 3/8" ID × 1 7/8" OD

										0.008"								-0.00075" to 0.00075"		0" to 0.011"	-0.002" to 0.002"	Rockwell B65	—	—	10	3088A299	00000




																				1 1/2" ID × 2 1/8" OD

											0.008"								-0.00075" to 0.00075"	0" to 0.011"	-0.002" to 0.002"	Rockwell B65	—	—	10	3088A311	00000




																				1 3/4" ID × 2 3/4" OD

												0.008"	-0.00075" to 0.00075"							0" to 0.011"	-0.002" to 0.002"	Rockwell B65	—	—	10	3088A312	00000




																				2" ID × 2 3/4" OD

														0.008"	-0.00075" to 0.00075"					0" to 0.011"	-0.002" to 0.002"	Rockwell B65	—	—	10	3088A313	00000


														Brass







3/32" ID × 13/64" OD

0.008"	-0.0005" to 0.0005"																			0" to 0.005"	-0.005" to 0.005"	Rockwell B70	—	—	10	93268A207	0000




																				1/8" ID × 3/16" OD

		0.008"	-0.0005" to 0.0005"																	0" to 0.005"	-0.005" to 0.005"	Rockwell B70	—	—	10	93268A307	0000




																				3/16" ID × 1/4" OD

				0.008"	-0.0005" to 0.0005"															0" to 0.005"	-0.005" to 0.005"	Rockwell B70	—	—	10	93268A407	0000




																				1/4" ID × 3/8" OD

						0.008"	-0.0005" to 0.0005"													0" to 0.005"	-0.005" to 0.005"	Rockwell B70	Material Certificate	—	10	93268A507	00000




																				5/16" ID × 1/2" OD

								0.008"	-0.0005" to 0.0005"											0" to 0.005"	-0.005" to 0.005"	Rockwell B70	—	—	10	93268A607	00000




																				3/8" ID × 9/16" OD

										0.008"										-0.0005" to 0.0005"	0" to 0.005"	-0.005" to 0.005"	Rockwell B70	Material Certificate	—	10	93268A707	00000




																				1/2" ID × 3/4" OD

											0.008"									-0.0005" to 0.0005"	0" to 0.005"	-0.005" to 0.005"	Rockwell B70	—	—	10	93268A807	00000

Shim Stock

Cut into custom shapes to create shims that suit your needs. With thickness tolerances as fine as a strand of hair, the shims will precisely align, space, and level components on dies, presses, and machinery.

18-8 Stainless Steel—The choice for wet and outdoor areas because it resists rust. However, it will corrode or pit when exposed to salt water and chemicals.

Highly Corrosion-Resistant 316 Stainless Steel—Superior to 18-8 stainless steel, it won't degrade when exposed to harsh weather, salt water, and most chemicals.

High-Strength 17-7 PH Stainless Steel—Similar in strength to steel, it won’t rust in wet and outdoor areas but can’t withstand harsh chemicals like 316 stainless steel.

Extreme-Strength 17-4 PH Stainless Steel—Stronger than 17-7 PH stainless steel, it won’t rust in wet and outdoor areas but can’t withstand harsh chemicals like 316 stainless steel.

Carbon Steel—Best for dry areas since moisture will cause it to rust.

Stress-Resistant Spring Steel—Harder and holds its shape better than carbon steel. Use it for high-stress applications, such as leveling heavy machinery. It's best for dry areas since moisture will cause it to rust.

Aluminum—An alternative to stainless steel for rust resistance but less hard so it may not retain its shape. One-third the weight of steel, it's often used in robotics and automation.

Brass—Picked for its warm, polished look. Similar to 18-8 stainless steel, it resists rusting in wet and outdoor areas.

Bronze—The choice for marine environments, it won't rust or deteriorate from exposure to salt water. It offers better corrosion resistance than 316 stainless steel but isn't as strong.

Copper—A good conductor of heat, it’s often used to install heat sinks. As our softest metal, it prevents component damage but may not retain its shape as well as other metals.

Titanium—Grade 2 titanium, 99% pure, is often used in chemical-processing plants for its resistance to strong acids and other harsh chemicals. It has a high strength-to-weight ratio.

Ultra-Chemical-Resistant PTFE—The most chemical-resistant shim stock we offer, it stands up to the widest range of harsh acids, bases, solvents, and corrosive cleaners, even at temperatures up to 500° F. It also won't mar delicate surfaces.

Temper Rating—Choose half hard to create shims that you’ll need to bend or shape. Opt for full hard to make stronger shims that will maintain their shape under loads.

					Certificate
	Thk.	Thk. Tolerance	Temper Rating	Color	Type	Form	Specs. Met	Form	Pkg. Qty.		Pkg.
18-8 Stainless Steel







				6" Wide × 25" Long

				0.008"	-0.0004" to 0.0004"	1/2 Hard	—	Material Certificate	Paper	ASTM A666	Sheet	1	2316K323	000000


				0.008"	-0.0004" to 0.0004"	Full Hard	—	Material Certificate	Paper	ASTM A666, SAE AMS5906, SAE AMS5913	Sheet	1	9011K46	00000




						6" Wide × 50" Long

						0.008"	-0.0004" to 0.0004"	1/2 Hard	—	Material Certificate	Paper	ASTM A666	Roll	1	2316K17	00000


						0.008"	-0.0004" to 0.0004"	Full Hard	—	Material Certificate	Paper	ASTM A666, SAE AMS5906, SAE AMS5913	Roll	1	9502K46	00000




								6" Wide × 100" Long

								0.008"	-0.0004" to 0.0004"	1/2 Hard	—	Material Certificate	Paper	ASTM A666	Roll	1	2316K314	00000


								0.008"	-0.0004" to 0.0004"	Full Hard	—	Material Certificate	Paper	ASTM A666, SAE AMS5906, SAE AMS5913	Roll	1	53755K38	00000




										8" Wide × 12" Long

										0.008"	-0.0004" to 0.0004"	1/2 Hard	—	Material Certificate	Paper	ASTM A666	Sheet	1	2316K334	00000


										0.008"	-0.0004" to 0.0004"	Full Hard	—	Material Certificate	Paper	ASTM A666, SAE AMS5906, SAE AMS5913	Sheet	1	9011K101	00000




												12" Wide × 50" Long

												0.008"	-0.0004" to 0.0004"	Full Hard	—	Material Certificate	Paper	ASTM A666, SAE AMS5906, SAE AMS5913	Roll	1	9506K38	00000




														12" Wide × 100" Long

														0.008"	-0.0004" to 0.0004"	Full Hard	—	Material Certificate	Paper	ASTM A666, SAE AMS5906, SAE AMS5913	Roll	1	9784K19	00000




																12" Wide × 120" Long

																0.008"	-0.0004" to 0.0004"	Full Hard	—	Material Certificate	Paper	ASTM A666, SAE AMS5906	Roll	1	9784K586	000000




																24" Wide × 24" Long

		0.008"	-0.0004" to 0.0004"													Full Hard	—	Material Certificate	Paper	ASTM A240, ASTM A666, SAE AMS5913	Sheet	1	9011K15	00000




																24" Wide × 50" Long

																0.008"	-0.0004" to 0.0004"	Full Hard	—	Material Certificate	Paper	ASTM A666, SAE AMS5906, SAE AMS5913	Sheet	1	9784K88	00000


				Highly Corrosion-Resistant 316 Stainless Steel







																		6" Wide × 50" Long

						0.008"												-0.0004" to 0.0004"	—	—	Material Certificate	Paper	ASTM A240, ASTM A666, SAE AMS5507, SAE AMS5524	Roll	1	9548K156	00000




																		6" Wide × 100" Long

																		0.008"	-0.0004" to 0.0004"	—	—	Material Certificate	Paper	ASTM A240, ASTM A666, SAE AMS5507, SAE AMS5524	Roll	1	9548K256	00000




																		8" Wide × 12" Long

																		0.008"	-0.0004" to 0.0004"	—	—	Material Certificate	Paper	ASTM A240, ASTM A666, SAE AMS5507, SAE AMS5524	Sheet	1	2317K23	00000




																				12" Wide × 50" Long

										0.008"	-0.0004" to 0.0004"									—	—	Material Certificate	Paper	ASTM A240, ASTM A666, SAE AMS5507, SAE AMS5524	Roll	1	9548K356	00000




																				12" Wide × 120" Long

												0.008"	-0.0004" to 0.0004"							—	—	Material Certificate	Paper	ASTM A240, ASTM A666, SAE AMS5507, SAE AMS5524	Roll	1	9548K728	000000




																				24" Wide × 24" Long

														0.008"	-0.0004" to 0.0004"					—	—	Material Certificate	Paper	ASTM A240, ASTM A666, SAE AMS5507, SAE AMS5524	Sheet	1	2317K43	000000


														High-Strength 17-7 PH Stainless Steel







																				6" Wide × 50" Long

		0.008"	-0.0004" to 0.0004"																	Full Hard	—	Material Certificate	Paper	ASTM A693	Roll	1	2325K16	00000


		Extreme-Strength 17-4 PH Stainless Steel







																				4" Wide × 60" Long

																0.008"				-0.0004" to 0.0004"	—	—	Material Certificate	Paper	ASTM A693	Roll	1	3723T45	000000


																Carbon Steel







																				6" Wide × 25" Long

																				0.008"	-0.00075" to 0.00075"	Full Hard	—	Material Certificate	Paper	ASTM A109	Sheet	1	9011K181	0000




																				6" Wide × 50" Long

																				0.008"	-0.00075" to 0.00075"	Full Hard	—	Material Certificate	Paper	—	Roll	1	9500K581	00000




																				6" Wide × 100" Long

																				0.008"	-0.00075" to 0.00075"	Full Hard	—	Material Certificate	Paper	—	Roll	1	9500K202	00000




																				6" Wide × 180" Long

																				0.008"	-0.00075" to 0.00075"	Full Hard	—	Material Certificate	Paper	—	Roll	1	9500K705	00000




																				12" Wide × 120" Long

																				0.008"	-0.00075" to 0.00075"	Full Hard	—	Material Certificate	Paper	—	Roll	1	9500K403	00000




																				24" Wide × 24" Long

	0.008"														-0.00075" to 0.00075"					Full Hard	—	Material Certificate	Paper	ASTM A109	Sheet	1	9011K165	00000


	Stress-Resistant Spring Steel







																				6" Wide × 12" Long

				0.008"																-0.0005" to 0.0005"	Full Hard	—	Material Certificate	Paper	ASTM A684, SAE AMS5122	Sheet	1	9014K138	00000




																				6" Wide × 25" Long

																0.008"				-0.0005" to 0.0005"	Full Hard	—	Material Certificate	Paper	ASTM A684, SAE AMS5122	Sheet	1	9014K16	00000




																				6" Wide × 50" Long

						0.008"	-0.0005" to 0.0005"													Full Hard	—	Material Certificate	Paper	ASTM A682, ASTM A684, MIL-S-7947	Roll	1	9503K37	00000




																				6" Wide × 100" Long

								0.008"	-0.0005" to 0.0005"											Full Hard	—	Material Certificate	Paper	ASTM A684, SAE AMS5122	Roll	1	9503K509	00000




																		8" Wide × 12" Long

																		0.008"	-0.0005" to 0.0005"	Full Hard	—	Material Certificate	Paper	ASTM A684, SAE AMS5122	Sheet	1	9014K159	00000


																		Aluminum







																				6" Wide × 50" Long

												0.008"	-0.0004" to 0.0004"							Full Hard	—	Material Certificate	Paper	ASTM B209	Roll	1	9708K57	00000




																				6" Wide × 100" Long

0.008"														-0.0004" to 0.0004"						Full Hard	—	Material Certificate	Paper	ASTM B209	Roll	1	9708K18	00000


Brass







																				6" Wide × 50" Long

		0.008"																		-0.0008" to 0.0008"	1/2 Hard	—	Material Certificate	Paper	ASTM B36	Roll	1	9504K328	00000




																				6" Wide × 60" Long

				0.008"																-0.0008" to 0.0008"	1/2 Hard	—	Material Certificate	Paper	ASTM B36	Roll	1	9504K52	00000




																				6" Wide × 100" Long

																0.008"	-0.0008" to 0.0008"			1/2 Hard	—	Material Certificate	Paper	ASTM B36	Roll	1	9501K39	00000




																				8" Wide × 12" Long

						0.008"														-0.0004" to 0.0004"	1/2 Hard	—	Material Certificate	Paper	ASTM B36	Sheet	1	9011K94	00000




																				12" Wide × 120" Long

								0.008"												-0.0008" to 0.0008"	1/2 Hard	—	Material Certificate	Paper	ASTM B36	Roll	1	9299K48	000000


								Bronze







																				6" Wide × 50" Long

																				0.008"	-0.0004" to 0.0004"	Spring	—	Material Certificate	Paper	ASTM B103	Roll	1	9020K12	00000


										Copper







																				6" Wide × 50" Long

																				0.008"	-0.0004" to 0.0004"	—	—	Material Certificate	Paper	ASTM B152	Roll	1	9709K95	00000




																				6" Wide × 100" Long

	0.008"																			-0.0004" to 0.0004"	—	—	Material Certificate	Paper	ASTM B152	Roll	1	9709K18	000000




																				8" Wide × 12" Long

		0.008"	-0.0004" to 0.0004"																	—	—	Material Certificate	Paper	ASTM B152	Sheet	1	9014K173	00000


		Titanium







																				6" Wide × 50" Long

																				0.008"	-0.0008" to 0.0008"	—	—	Material Certificate	Paper	ASTM B265	Roll	1	5747T34	000000




																				12" Wide × 50" Long

																				0.008"	-0.0008" to 0.0008"	—	—	Material Certificate	Paper	ASTM B265	Roll	1	5747T44	000000


						Ultra-Chemical-Resistant PTFE







									6" Wide × 50" Long

									0.008"												-0.0008" to 0.0008"	—	White	—	—	ASTM D3308, MIL-P-22241	Roll	1	1192N519	00000




																			8" Wide × 12" Long

																			0.008"		-0.0008" to 0.0008"	—	White	—	—	ASTM D3308, MIL-P-22241	Sheet	1	1192N535	00000

Slotted Shims


	Tab End

Slip these shims around existing mounting fasteners to precisely align and level components such as pumps, compressors, and gearboxes with motors, all without disassembling them. They’re also good for leveling machines on uneven surfaces. To reduce sizing errors, these shims are either labeled with their thickness so there's no need to measure or color coded by thickness to quickly spot the right size.

18-8 Stainless Steel—The choice for wet and outdoor environments, these shims resist rust. However, they’ll corrode or pit when exposed to salt water and chemicals.

Insertion Tools—Ease shim insertion and removal, keeping your fingers clear in the process.

	Shims													Insertion Tools
				Slot					Each		Package
	Thk.	Thk. Tolerance	For Max. Screw Size	Wd.	Dp.	Min. Hardness	Identification Type	End Shape		Each	Pkg. Qty.		Pkg.		Each
18-8 Stainless Steel







				1 1/2" Lg. × 1 1/2" Wd. (Shim Trade Size AA)

				0.008"	-0.0004" to 0.0004"	3/8"	7/16"	61/64"	Rockwell C42	Labeled	Tab	97235K381	00000	20	97235K333	000000	97235K9	00000




						2" Lg. × 2" Wd. (Shim Trade Size A)

						0.008"	-0.0004" to 0.0004"	1/2"	9/16"	1 9/32"	Rockwell C42	Labeled	Tab	9722K384	0000	20	9722K387	00000	97235K915	0000




								2 1/2" Lg. × 2 1/2" Wd. (Shim Trade Size BB)

								0.008"	-0.0004" to 0.0004"	5/8"	11/16"	1 19/32"	Rockwell C42	Labeled	Tab	97235K387	0000	20	97235K336	00000	97235K915	0000




										3" Lg. × 3" Wd. (Shim Trade Size B)

										0.008"	-0.0004" to 0.0004"	3/4"	13/16"	1 29/32"	Rockwell C42	Labeled	Tab	9722K371	0000	20	9722K381	00000	97235K93	0000




												4" Lg. × 4" Wd. (Shim Trade Size C)

												0.008"	-0.0004" to 0.0004"	1 1/8"	1 3/16"	2 19/32"	Rockwell C42	Labeled	Tab	9722K114	0000	20	9722K314	00000	97235K93	0000




														5" Lg. × 5" Wd. (Shim Trade Size D)

														0.008"	-0.0004" to 0.0004"	1 1/2"	1 9/16"	3 9/32"	Rockwell C42	Labeled	Tab	9722K127	0000	20	9722K307	00000	97235K945	0000




																6" Lg. × 6" Wd. (Shim Trade Size E)

																0.008"	-0.0004" to 0.0004"	1 7/8"	1 15/16"	4"	Rockwell C42	Labeled	Tab	97235K401	0000	20	97235K421	000000	97235K96	0000




																		6" Lg. × 6" Wd. (Shim Trade Size G)

																		0.008"	-0.0004" to 0.0004"	2 1/4"	2 5/16"	4 3/16"	Rockwell C42	Labeled	Tab	97235K404	0000	20	97235K424	000000	97235K96	0000




																				8" Lg. × 8" Wd. (Shim Trade Size H)

0.008"	-0.0004" to 0.0004"																			2 1/4"	2 5/16"	5 3/16"	Rockwell C42	Labeled	Tab	97235K407	0000	20	97235K427	000000	97235K985	0000

Peel-Away Multilayer Shim Stock

Image of ProductInUse. Front orientation. Shim Stock. Peel Away, Sold Individually, Multilayer.

Fine-tune thickness without worrying about stacking multiple shims. Cut the shim stock into custom shapes that suit your needs. It's made of layers of material bonded with adhesive—peel off the layers with a utility knife until you reach your desired thickness. To make peeling easier, warm the created shims to soften the adhesive. With thickness tolerances as fine as a strand of hair, the shims will precisely align, space, and level components on dies, presses, and machinery.

18-8 Stainless Steel—The choice for wet and outdoor areas because it resists rust. However, it will corrode or pit when exposed to salt water and chemicals.

Carbon Steel—Best for dry areas since moisture will cause it to rust.

Aluminum—An alternative to stainless steel for rust resistance but less hard so it may not retain its shape. One-third the weight of steel, it's often used in robotics and automation.

Brass—Picked for its warm, polished look. Similar to 18-8 stainless steel, it resists rusting in wet and outdoor areas.

Polyimide—Originally designed for military aircraft, it’s used in everything from aerospace to electronics where weight, electrical insulation, and precision are vital.

Temper Rating—Choose half hard to create shims that you’ll need to bend or shape. Opt for full hard to make stronger shims that will maintain their shape under loads.

						Certificate
	Thk.	Thk. Tolerance	No. of Layers	Layer Thk.	Temper Rating	Type	Form	Specs. Met	Form		Each
18-8 Stainless Steel







				12" Wide × 12" Long

				0.008"	-0.0005" to 0.001"	4	0.002"	—	—	—	SAE AMS-DTL-22499	Sheet	9718K41	000000




						20" Wide × 24" Long

						0.008"	-0.0005" to 0.001"	4	0.002"	—	—	—	SAE AMS-DTL-22499	Sheet	9718K11	00000


						Carbon Steel







										12" Wide × 12" Long

										0.008"	-0.0005" to 0.001"	4	0.002"	—	—	—	Fed. Spec. QQ-S-698, SAE AMS-DTL-22499	Sheet	9720K39	00000




												20" Wide × 24" Long

												0.008"	-0.0005" to 0.001"	4	0.002"	—	—	—	Fed. Spec. QQ-S-698, SAE AMS-DTL-22499	Sheet	9720K12	00000


												Aluminum







																12" Wide × 12" Long

																0.008"	-0.0005" to 0.001"	4	0.002"	Extra Hard	—	—	SAE AMS-DTL-22499	Sheet	9574K73	00000


																Brass







																				8" Wide × 24" Long

																				0.008"	-0.0005" to 0.001"	4	0.002"	1/2 Hard	—	—	SAE AMS-DTL-22499	Sheet	9521K12	00000


Polyimide







																				12" Wide × 12" Long

																				0.008"	-0.0005" to 0.001"	2	0.002"	—	Material Certificate	Paper	ASTM D5213, SAE AMS-DTL-22499	Sheet	3126N11	000000

Adhesive-Back Shim Stock

Stick with confidence—a durable adhesive keeps this shim stock from sliding out of place. Cut the shim stock into custom shapes to create shims that suit your needs. With thickness tolerances as fine as a strand of hair, the shims will precisely align, space, and level components on dies, presses, and machinery.

18-8 Stainless Steel—The choice for wet and outdoor areas because it resists rust. However, it will corrode or pit when exposed to salt water and chemicals.

Highly Corrosion-Resistant 316 Stainless Steel—Superior to 18-8 stainless steel, it won't degrade when exposed to harsh weather, salt water, and most chemicals.

Aluminum—An alternative to stainless steel for rust resistance but less hard so it may not retain its shape. One-third the weight of steel, it's often used in robotics and automation.

Brass—Picked for its warm, polished look. Similar to 18-8 stainless steel, it resists rusting in wet and outdoor areas.

Temper Rating—Choose half hard to create shims that you’ll need to bend or shape. Opt for full hard to make stronger shims that will maintain their shape under loads.

Certificates with a traceable lot number are available for these products. Download certificates from ORDER HISTORY after your order ships.

							Certificate
	Thk.	Thk. Tolerance	Material Thk.	Adhesive Thk.	Adhesive Type	Temper Rating	Type	Form	Specs. Met	Form		Each
18-8 Stainless Steel







				8" Wide × 12" Long

				0.008"	-0.0003" to 0.0003"	0.006"	0.002"	Acrylic	Full Hard	Material Certificate	Digital	ASTM A666	Sheet	2951N215	000000


				Highly Corrosion-Resistant 316 Stainless Steel







								8" Wide × 12" Long

								0.008"	-0.0003" to 0.0003"	0.006"	0.002"	Acrylic	—	Material Certificate	Digital	ASTM A666	Sheet	2951N343	00000


								Aluminum







												6" Wide × 12" Long

												0.008"	-0.0006" to 0.0006"	0.006"	0.002"	Acrylic	—	Material Certificate	Digital	ASTM B209	Sheet	2951N243	00000


												Brass







																8" Wide × 12" Long

																0.008"	-0.0006" to 0.0006"	0.006"	0.002"	Acrylic	1/2 Hard	Material Certificate	Digital	ASTM B36	Sheet	2951N23	00000

Made-to-Order Shims

Image of Product. Front orientation. Shims. Sold Individually, Made-to-Order.

If you need a unique shim shape or size, we’ll precision cut it for you. With thickness tolerances as fine as a strand of hair, these shims precisely align, space, and level components on shafts, arbors, and machinery.

Send your dimensioned DWG, DXF, IGES, or STEP file to sales@mcmaster.com. Please leave at least _1/8" wall between shim edge and holes. Minimum hole size is _1/8". Shims should be no smaller than 1" × 1" square or 1" OD. Maximum shim dimension is the largest overall length, width, or diameter of your custom shim.

18-8 Stainless Steel—The choice for wet and outdoor environments, these shims resist rust. However, they’ll corrode or pit when exposed to salt water and chemicals.

Highly Corrosion-Resistant 316 Stainless Steel—Superior to 18-8 stainless steel, these shims won't degrade when exposed to harsh weather, salt water, and most chemicals.

Carbon Steel—Best for dry environments since moisture will cause these shims to rust.

Material Certificate—Shims include a report with a traceable lot number.

						2" × 2" Maximum Shim Size			5" × 5" Maximum Shim Size			7" × 7" Maximum Shim Size			11" × 11" Maximum Shim Size			23" × 23" Maximum Shim Size
	Thk.	Thk. Tolerance	Min. Hardness	Certificate Type	Specs. Met	Pkg. Qty.		Pkg.	Pkg. Qty.		Pkg.	Pkg. Qty.		Pkg.	Pkg. Qty.		Pkg.	Pkg. Qty.		Pkg.
18-8 Stainless Steel



		0.008"	-0.0004" to 0.0004"	Rockwell C42	Material Certificate	ASTM A240	16	11885N179	000000	4	11885N195	000000	9	11885N211	0000000	4	11885N226	0000000	1	11885N242	0000000


		Highly Corrosion-Resistant 316 Stainless Steel



				0.008"	-0.0004" to 0.0004"	Not Rated	Material Certificate	ASTM A240, Fed. Spec. QQ-S-766	16	11885N108	00000	4	11885N124	00000	9	11885N138	000000	4	11885N152	000000	1	11885N165	000000


				Carbon Steel



						0.008"	-0.0004" to 0.0004"	Rockwell B90	Material Certificate	ASTM A109, Fed. Spec. QQ-S-698	16	11885N257	00000	4	11885N273	00000	9	11885N287	00000	4	11885N302	00000	1	11885N316	00000

Peel-Away Multilayer Made-to-Order Shims

Image of Product. Front orientation. Shims. Multilayer, Sold Individually, Made-to-Order, Peel Away.

If you need a unique peel-away shim shape or size, we’ll precision cut it for you. Use these shims to fine-tune thickness without worrying about stacking multiple shims. They're made of metal layers bonded with adhesive—peel off the layers with a utility knife until you reach your desired thickness. To make peeling easier, warm the shims to soften the adhesive. With thickness tolerances as fine as a strand of hair, all of these shims precisely align, space, and level components on shafts, arbors, and machinery.

Send your dimensioned DWG, DXF, IGES, or STEP file to sales@mcmaster.com. Please leave at least _1/8" wall between shim edge and holes. Minimum hole size is _1/4". Shims should be no smaller than 1" × 1" square or 1" OD. Maximum shim dimension is the largest overall length, width, or diameter of your custom shim.

18-8 Stainless Steel—The choice for wet and outdoor environments, these shims resist rust. However, they’ll corrode or pit when exposed to salt water and chemicals.

Carbon Steel—Best for dry environments since moisture will cause these shims to rust.

Aluminum—These shims are an alternative to stainless steel for rust resistance but aren't as hard so they may not retain their shape as well. One-third the weight of steel, they’re commonly used in robotics and automation.

Brass—With a warm, polished look, these shims are often chosen for their appearance. Similar to 18-8 stainless steel, brass is corrosion resistant enough to stand up to wet environments.

Material Certificate—Shims include a report with a traceable lot number.

								2" × 2" Maximum Shim Size			5" × 5" Maximum Shim Size			7" × 7" Maximum Shim Size			11" × 11" Maximum Shim Size			23" × 23" Maximum Shim Size
	Thk.	Thk. Tolerance	No. of Layers	Layer Thk.	Min. Hardness	Certificate Type	Specs. Met	Pkg. Qty.		Pkg.	Pkg. Qty.		Pkg.	Pkg. Qty.		Pkg.	Pkg. Qty.		Pkg.	Pkg. Qty.		Pkg.
18-8 Stainless Steel



		0.008"	-0.0004" to 0.0004"	4	0.002"	Rockwell B80	Material Certificate	ASTM A240	16	11885N367	0000000	4	11885N374	0000000	9	11885N381	0000000	4	11885N387	0000000	1	11885N394	0000000


		Carbon Steel



				0.008"	-0.0004" to 0.0004"	4	0.002"	Rockwell B54	Material Certificate	Fed. Spec. QQ-S-698	16	11885N401	00000	4	11885N407	00000	9	11885N414	000000	4	11885N421	000000	1	11885N427	000000


				Aluminum



						0.008"	-0.0004" to 0.0004"	4	0.002"	Not Rated	Material Certificate	ASTM B209, SAE AMS-DTL-22499	16	11885N434	00000	4	11885N441	00000	9	11885N447	000000	4	11885N454	000000	1	11885N461	000000


						Brass



								0.008"	-0.0004" to 0.0004"	4	0.002"	Not Rated	Material Certificate	ASTM B36	16	11885N467	000000	4	11885N474	000000	9	11885N481	000000	4	11885N487	000000	1	11885N494	000000

Wave Spring Lock Washers

The wavy shape flexes like a spring to keep nuts and screws secure on slightly uneven surfaces. These washers add a small amount of tension to stop fasteners from backing out due to mild vibration. While they don't hold as well as other lock washers, they do grip slightly better than curved washers. They work best in electrical panels, light fixtures, and other light duty assemblies. Since these washers hold their shape when untightened, you can reuse them a handful of times without losing strength.

18-8 Stainless Steel—The choice for wet and outdoor environments, these washers won't rust when exposed to moisture. However, they can't hold up to the harsh chemicals that 316 stainless steel can.

Black-Oxide 18-8 Stainless Steel—Typically chosen for their appearance, these washers have a dark, matte coating to create a finished look. They won't rust in wet and outdoor environments, but can't hold up to harsh chemicals as well as 316 stainless steel.

Highly Corrosion-Resistant 316 Stainless Steel—Superior to 18-8 stainless steel, these washers won't degrade when exposed to harsh weather, salt water, and most chemicals.

Steel—Best for dry environments since moisture will cause these washers to rust.

3 Wave—More points of contact than single-wave washers for a better grip.

	No. of Waves	ID	OD	Thk.	Overall Ht.	Pkg. Qty.		Pkg.
18-8 Stainless Steel



	No. 4	1	0.121"	0.240"	0.008"	0.056"	10	99842A105	000000


	Black-Oxide 18-8 Stainless Steel



			No. 4	1	0.121"	0.240"	0.008"	0.056"	10	99842A335	00000


			Highly Corrosion-Resistant 316 Stainless Steel



					No. 4	1	0.118"	0.240"	0.008"	0.056"	10	93423A113	00000


					Steel



							No. 6	1	0.160"	0.438"	0.008"	0.103"	10	96697A300	0000


							No. 10	3	0.214"	0.250"	0.008"	0.050"	100	90134A011	00000
							1/4"	1	0.269"	0.423"	0.008"	0.070"	10	96697A500	00000

Shims for Keyed Shafts

With a notch or tab, these shims fit snugly on keyed shafts to align and space gears, sprockets, and bearings. On keyed arbors, they’re often used to accurately space saw blades and cutters.

Notch

Fit these shims around keyed shafts and arbors that have a key inserted. They’re often referred to as arbor spacers.

18-8 Stainless Steel—The choice for wet and outdoor environments, these shims resist rust. However, they’ll corrode or pit when exposed to salt water and chemicals.

							Notch
	Thk.	Thk. Tolerance	ID	ID Tolerance	OD	OD Tolerance	Wd.	Dp.	Min. Hardness	Pkg. Qty.		Pkg.
18-8 Stainless Steel







				For 3/4" Diameter Shafts

				0.008"	-0.0008" to 0.0008"	3/4"	0" to 0.011"	1 1/8"	-0.002" to 0.002"	3/16"	5/64"	Rockwell B80	10	98116A341	000000




						For 7/8" Diameter Shafts

						0.008"	-0.0008" to 0.0008"	7/8"	0" to 0.011"	1 3/8"	-0.002" to 0.002"	3/16"	5/64"	Rockwell B80	10	98116A344	00000




								For 1" Diameter Shafts

								0.008"	-0.0008" to 0.0008"	1"	0" to 0.011"	1 1/2"	-0.002" to 0.002"	1/4"	3/32"	Rockwell B80	10	98116A347	00000




										For 1 1/4" Diameter Shafts

										0.008"	-0.0008" to 0.0008"	1 1/4"	0" to 0.011"	1 3/4"	-0.002" to 0.002"	5/16"	1/8"	Rockwell B80	5	98116A350	0000




												For 1 1/2" Diameter Shafts

												0.008"	-0.0008" to 0.0008"	1 1/2"	0" to 0.011"	2 1/8"	-0.002" to 0.002"	3/8"	5/32"	Rockwell B80	5	98116A353	00000




														For 2" Diameter Shafts

														0.008"	-0.0008" to 0.0008"	2"	0" to 0.011"	2 3/4"	-0.002" to 0.002"	1/2"	3/16"	Rockwell B80	1	98116A357	0000