0.050" Shims | McMaster-Carr

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.

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.

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" Lg. × 1" Wd. (Shim Trade Size AAA)

				0.05"	-0.002" to 0.002"	1/4"	5/16"	21/32"	Rockwell B70	Labeled	Tab	97235K372	00000	20	97235K313	000000	97235K9	00000




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

						0.05"	-0.002" to 0.002"	3/8"	7/16"	61/64"	Rockwell B85	Labeled	Tab	97235K161	0000	20	97235K061	00000	97235K9	0000




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

								0.05"	-0.002" to 0.002"	1/2"	9/16"	1 9/32"	Rockwell B85	Labeled	Tab	9722K65	0000	20	9722K605	00000	97235K915	0000




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

										0.05"	-0.002" to 0.002"	5/8"	11/16"	1 19/32"	Rockwell B85	Labeled	Tab	97235K316	0000	20	97235K391	00000	97235K915	0000




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

												0.05"	-0.002" to 0.002"	3/4"	13/16"	1 29/32"	Rockwell B85	Labeled	Tab	9722K66	0000	20	9722K606	00000	97235K93	0000




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

														0.05"	-0.002" to 0.002"	1 1/8"	1 3/16"	2 19/32"	Rockwell B85	Labeled	Tab	9722K67	0000	20	9722K607	00000	97235K93	0000




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

																0.05"	-0.002" to 0.002"	1 1/2"	1 9/16"	3 9/32"	Rockwell B85	Labeled	Tab	9722K68	0000	20	9722K608	000000	97235K945	0000




																		6" Lg. × 5" Wd. (Shim Trade Size DD)

																		0.05"	-0.002" to 0.002"	1 1/2"	1 9/16"	4 1/2"	Rockwell B70	Labeled	Tab	97235K782	0000	20	97235K732	000000	———	0




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

0.05"	-0.002" to 0.002"																			1 7/8"	1 15/16"	4"	Rockwell B85	Labeled	Tab	97235K162	00000	20	97235K062	000000	97235K96	0000




		6" Lg. × 6" Wd. (Shim Trade Size G)

		0.05"	-0.002" to 0.002"																	2 1/4"	2 5/16"	4 3/16"	Rockwell B85	Labeled	Tab	97235K163	00000	20	97235K063	000000	97235K96	0000




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

				0.05"	-0.002" to 0.002"															2 1/4"	2 5/16"	5 3/16"	Rockwell B85	Labeled	Tab	97235K164	00000	20	97235K064	000000	97235K985	00000


				Highly Corrosion-Resistant 316 Stainless Steel







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

																				0.05"	-0.002" to 0.002"	9/16"	5/8"	1 9/32"	Rockwell C36	Labeled	Tab	94420A152	0000	10	94420A516	00000	94420A500	0000




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

																				0.05"	-0.002" to 0.002"	3/4"	7/8"	2 1/8"	Rockwell C36	Labeled	Tab	94420A257	0000	10	94420A524	00000	94420A500	0000




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

																				0.05"	-0.002" to 0.002"	1 1/8"	1 1/4"	2 3/4"	Rockwell C36	Labeled	Tab	94420A377	0000	10	94420A532	00000	94420A500	0000

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.

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.

Plastic—Softer than metal, it won't mar delicate surfaces and it will never rust.

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	Specs. Met	Form	Type	Form		Each
Stress-Resistant Spring Steel







				6" Wide × 12" Long

				0.05"	-0.002" to 0.002"	Full Hard	—	ASTM A684, SAE AMS5122	Sheet	Material Certificate	Paper	9014K151	000000




						6" Wide × 25" Long

						0.05"	-0.002" to 0.002"	Full Hard	—	ASTM A684, SAE AMS5122	Sheet	Material Certificate	Paper	9014K913	00000




								6" Wide × 50" Long

								0.05"	-0.002" to 0.002"	Full Hard	—	ASTM A684, SAE AMS5122	Sheet	Material Certificate	Paper	9503K517	00000




										24" Wide × 48" Long

										0.05"	-0.002" to 0.002"	Full Hard	—	ASTM A682, ASTM A684	Sheet	Material Certificate	Paper	9014K318	000000


										Plastic







														5" Wide × 20" Long

														0.05"	-0.005" to 0.005"	—	Clear	—	Sheet	—	—	9513K82	0000




																10" Wide × 20" Long

																0.05"	-0.005" to 0.005"	—	Clear	—	Sheet	—	—	9513K87	00000




																		12" Wide × 24" Long

																		0.05"	-0.005" to 0.005"	—	Clear	—	Sheet	—	—	9513K127	00000




																				20" Wide × 20" Long

0.05"																				-0.005" to 0.005"	—	Clear	—	Sheet	—	—	9513K92	00000




		20" Wide × 50" Long

		0.05"	-0.005" to 0.005"																	—	Clear	—	Sheet	—	—	9513K158	00000