0.1mm 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.

Super-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.

Stress-Resistant Spring Steel—These shims are harder and hold their shape better than carbon steel. Use them for high-stress applications, such as leveling heavy machinery. They're best for dry environments since moisture will cause them 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.

Copper—Good conductors of heat, these shims are often used when installing heat sinks. As our softest metal shims, they prevent damage to equipment and components but may not retain their shape as well as other metal shims.

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

	Thk., mm	ID Tolerance, mm	OD Tolerance, mm	Min. Hardness	Color	Specs. Met	Pkg. Qty.		Pkg.
18-8 Stainless Steel





			4 mm ID × 8 mm OD
			0.1	-0.013 to 0.013	-0.3 to 0.3	-0.05 to 0.05	Rockwell B70	—	—	25	98089A201	00000



					5 mm ID × 10 mm OD
					0.1	-0.013 to 0.013	-0.3 to 0.3	-0.05 to 0.05	Rockwell B70	—	—	25	98089A205	0000



							6 mm ID × 12 mm OD
							0.1	-0.013 to 0.013	-0.31 to 0.29	-0.11 to -0.01	Rockwell B70	—	—	10	98089A208	0000



									8 mm ID × 14 mm OD
									0.1	-0.013 to 0.013	-0.3 to 0.3	-0.05 to 0.05	Rockwell B70	—	—	50	98089A212	00000



											10 mm ID × 16 mm OD
											0.1	-0.013 to 0.013	-0.29 to 0.31	-0.05 to 0.05	Rockwell B70	—	—	50	98089A216	00000



													12 mm ID × 18 mm OD
													0.1	-0.013 to 0.013	-0.31 to 0.29	-0.04 to 0.06	Rockwell B70	—	—	25	98089A220	0000



															14 mm ID × 20 mm OD
															0.1	-0.013 to 0.013	-0.3 to 0.3	-0.06 to 0.04	Rockwell B70	—	—	25	98089A224	00000



																	16 mm ID × 22 mm OD
																	0.1	-0.013 to 0.013	-0.3 to 0.3	-0.05 to 0.05	Rockwell B70	—	—	25	98089A228	00000



																			18 mm ID × 25 mm OD
																			0.1	-0.013 to 0.013	-0.3 to 0.3	-0.05 to 0.05	Rockwell B70	—	—	25	98089A230	0000



																					20 mm ID × 28 mm OD
																					0.1	-0.013 to 0.013	-0.31 to 0.29	-0.06 to 0.04	Rockwell B70	—	—	25	98089A232	00000



																							22 mm ID × 30 mm OD
																							0.1	-0.013 to 0.013	-0.3 to 0.3	-0.05 to 0.05	Rockwell B70	—	—	25	98089A234	00000



																									25 mm ID × 36 mm OD
																									0.1	-0.013 to 0.013	-0.31 to 0.29	-0.06 to 0.04	Rockwell B70	—	—	10	98089A236	00000



	30 mm ID × 42 mm OD
	0.1																									-0.013 to 0.013	-0.3 to 0.3	-0.04 to 0.06	Rockwell B70	—	—	10	98089A240	0000



		35 mm ID × 45 mm OD
		0.1																								-0.013 to 0.013	-0.3 to 0.3	-0.04 to 0.06	Rockwell B70	—	—	10	98089A244	00000



				40 mm ID × 50 mm OD
				0.1																						-0.013 to 0.013	-0.29 to 0.31	-0.04 to 0.06	Rockwell B70	—	—	10	98089A248	00000



					45 mm ID × 55 mm OD
					0.1																						-0.013 to 0.013	0 to 0.28	-0.28 to 0.28	Rockwell B70	—	ASTM A240	1	98089A182	0000



																											50 mm ID × 62 mm OD
							0.1																				-0.013 to 0.013	-0.29 to 0.31	-0.07 to 0.03	Rockwell B70	—	—	5	98089A501	00000



																											55 mm ID × 68 mm OD
									0.1																		-0.013 to 0.013	-0.31 to 0.29	0.02 to 0.12	Rockwell B70	—	—	5	98089A505	00000



																											60 mm ID × 75 mm OD
											0.1																-0.013 to 0.013	-0.31 to 0.29	-0.12 to -0.02	Rockwell B70	—	—	5	98089A509	00000



																											70 mm ID × 90 mm OD
													0.1														-0.013 to 0.013	-0.3 to 0.3	-0.13 to -0.03	Rockwell B70	—	—	1	98089A513	0000

													Super-Corrosion-Resistant 316 Stainless Steel





																											4 mm ID × 8 mm OD
																											0.1	-0.013 to 0.013	-0.3 to 0.3	-0.5 to 0.5	Rockwell B70	—	ASTM A240	10	90214A151	00000



																											5 mm ID × 10 mm OD
																											0.1	-0.013 to 0.013	-0.3 to 0.3	-0.5 to 0.5	Rockwell B70	—	ASTM A240	10	90214A155	00000



																											6 mm ID × 12 mm OD
																											0.1	-0.013 to 0.013	-0.3 to 0.3	-0.05 to 0.05	Rockwell B70	—	—	10	90214A111	00000



																											8 mm ID × 14 mm OD
																											0.1	-0.013 to 0.013	-0.3 to 0.3	-0.05 to 0.05	Rockwell B70	—	—	10	90214A115	00000



																								10 mm ID × 16 mm OD
																								0.1			-0.013 to 0.013	-0.3 to 0.3	-0.05 to 0.05	Rockwell B70	—	—	10	90214A119	00000



																								12 mm ID × 18 mm OD
																								0.1	-0.013 to 0.013		-0.3 to 0.3	-0.05 to 0.05	Rockwell B70	—	—	10	90214A123	00000



																								14 mm ID × 20 mm OD
																								0.1	-0.013 to 0.013		-0.3 to 0.3	-0.05 to 0.05	Rockwell B70	—	—	10	90214A127	00000



																									16 mm ID × 22 mm OD
																									0.1		-0.013 to 0.013	-0.3 to 0.3	-0.05 to 0.05	Rockwell B70	—	—	10	90214A131	00000



																									18 mm ID × 25 mm OD
																									0.1	-0.013 to 0.013	-0.3 to 0.3	-0.5 to 0.5	Rockwell B70	—	ASTM A240	5	90214A159	00000



																									20 mm ID × 28 mm OD
																									0.1	-0.013 to 0.013	-0.3 to 0.3	-0.05 to 0.05	Rockwell B70	—	—	1	90214A135	0000



																									25 mm ID × 36 mm OD
																									0.1	-0.013 to 0.013	-0.3 to 0.3	-0.05 to 0.05	Rockwell B70	—	—	1	90214A140	0000



																									30 mm ID × 42 mm OD
																									0.1	-0.013 to 0.013	-0.3 to 0.3	-0.05 to 0.05	Rockwell B70	—	—	1	90214A144	0000

																									Carbon Steel





																									5 mm ID × 10 mm OD
																									0.1	-0.013 to 0.013	-0.3 to 0.3	-0.5 to 0.5	Rockwell B40	—	—	5	3088A002	0000



																									8 mm ID × 14 mm OD
																									0.1	-0.013 to 0.013	-0.3 to 0.3	-0.5 to 0.5	Rockwell B40	—	—	5	3088A004	0000



																									10 mm ID × 16 mm OD
																									0.1	-0.013 to 0.013	-0.3 to 0.3	-0.5 to 0.5	Rockwell B40	—	—	5	3088A005	0000



																									12 mm ID × 18 mm OD
																									0.1	-0.013 to 0.013	-0.3 to 0.3	-0.5 to 0.5	Rockwell B40	—	—	5	3088A006	0000



																									14 mm ID × 20 mm OD
																									0.1	-0.013 to 0.013	-0.3 to 0.3	-0.5 to 0.5	Rockwell B40	—	—	5	3088A992	0000



																									16 mm ID × 22 mm OD
																									0.1	-0.013 to 0.013	-0.3 to 0.3	-0.5 to 0.5	Rockwell B40	—	—	5	3088A008	0000



																									18 mm ID × 25 mm OD
																									0.1	-0.013 to 0.013	-0.3 to 0.3	-0.5 to 0.5	Rockwell B40	—	—	5	3088A009	0000



																									20 mm ID × 28 mm OD
																									0.1	-0.013 to 0.013	-0.3 to 0.3	-0.5 to 0.5	Rockwell B40	—	—	5	3088A993	0000



																									22 mm ID × 30 mm OD
																									0.1	-0.013 to 0.013	-0.3 to 0.3	-0.5 to 0.5	Rockwell B40	—	—	5	3088A011	0000



																									25 mm ID × 36 mm OD
																									0.1	-0.013 to 0.013	-0.3 to 0.3	-0.5 to 0.5	Rockwell B40	—	—	5	3088A994	0000



																									30 mm ID × 42 mm OD
																									0.1	-0.013 to 0.013	-0.3 to 0.3	-0.5 to 0.5	Rockwell B40	—	—	5	3088A013	0000



																									40 mm ID × 50 mm OD
																									0.1	-0.013 to 0.013	-0.3 to 0.3	-0.5 to 0.5	Rockwell B40	—	—	1	3088A015	0000



														55 mm ID × 68 mm OD
														0.1												-0.013 to 0.013	-0.3 to 0.3	-0.5 to 0.5	Rockwell B40	—	—	1	3088A017	00000



																80 mm ID × 100 mm OD
																0.1										-0.013 to 0.013	-0.3 to 0.3	-0.5 to 0.5	Rockwell B40	—	—	1	3088A02	00000

																Stress-Resistant Spring Steel





																											4 mm ID × 8 mm OD
																			0.1								-0.03 to 0	0.03 to 0.4	-0.47 to -0.04	Rockwell B85	—	DIN 988	50	98055A085	0000



																											5 mm ID × 10 mm OD
																					0.1						-0.03 to 0	0.03 to 0.4	-0.47 to -0.04	Rockwell B85	—	DIN 988	50	98055A095	0000



																						6 mm ID × 12 mm OD
																						0.1					-0.03 to 0	0.03 to 0.4	-0.47 to -0.04	Rockwell B85	—	DIN 988	50	98055A105	0000



																						8 mm ID × 14 mm OD
																						0.1	-0.03 to 0				0.03 to 0.4	-0.47 to -0.04	Rockwell B85	—	DIN 988	50	98055A111	0000



																						10 mm ID × 16 mm OD
																						0.1	-0.03 to 0				0.03 to 0.4	-0.47 to -0.04	Rockwell B85	—	DIN 988	50	98055A117	0000



																							12 mm ID × 18 mm OD
																							0.1				-0.03 to 0	0.03 to 0.4	-0.47 to -0.04	Rockwell B85	—	DIN 988	50	98055A125	0000



																							14 mm ID × 20 mm OD
																							0.1				-0.03 to 0	0.03 to 0.4	-0.47 to -0.04	Rockwell B85	—	DIN 988	25	98055A211	0000



																							16 mm ID × 22 mm OD
																							0.1	-0.03 to 0			0.03 to 0.4	-0.47 to -0.04	Rockwell B85	—	DIN 988	25	98055A218	0000



																							18 mm ID × 25 mm OD
																							0.1	-0.03 to 0			0.03 to 0.4	-0.47 to -0.04	Rockwell B85	—	DIN 988	25	98055A228	0000



																							20 mm ID × 28 mm OD
																							0.1	-0.013 to 0.013			-0.3 to 0.3	-0.5 to 0.5	Rockwell C40	—	—	5	98055A141	00000



																								22 mm ID × 30 mm OD
																								0.1			-0.03 to 0	0.03 to 0.4	-0.47 to -0.04	Rockwell B85	—	DIN 988	25	98055A242	0000



																								25 mm ID × 36 mm OD
																								0.1			-0.03 to 0	0.03 to 0.4	-0.47 to -0.04	Rockwell B85	—	DIN 988	25	98055A251	0000



																	30 mm ID × 42 mm OD
																	0.1										-0.03 to 0	0.03 to 0.4	-0.47 to -0.04	Rockwell B85	—	DIN 988	10	98055A321	0000



																									35 mm ID × 45 mm OD
																									0.1		-0.03 to 0	0.03 to 0.4	-0.47 to -0.04	Rockwell B85	—	DIN 988	10	98055A342	0000



																									40 mm ID × 50 mm OD
																									0.1		-0.03 to 0	0.03 to 0.4	-0.47 to -0.04	Rockwell B85	—	DIN 988	10	98055A357	0000



																									50 mm ID × 62 mm OD
																									0.1		-0.013 to 0.013	-0.3 to 0.3	-0.5 to 0.5	Rockwell C40	—	—	1	98055A143	0000

	Aluminum





			20 mm ID × 28 mm OD
			0.1																							-0.013 to 0.013	-0.3 to 0.3	-0.5 to 0.5	Brinell 60	—	—	5	92661A905	0000



				25 mm ID × 36 mm OD
				0.1																							-0.013 to 0.013	-0.3 to 0.3	-0.5 to 0.5	Brinell 60	—	—	5	92661A906	00000

				Brass





																											6 mm ID × 12 mm OD
																											0.1	-0.013 to 0.013	-0.3 to 0.3	-0.5 to 0.5	Rockwell B14	—	ASTM B36	5	92678A601	0000



																											8 mm ID × 14 mm OD
																											0.1	-0.013 to 0.013	-0.3 to 0.3	-0.5 to 0.5	Rockwell B14	—	ASTM B36	5	92678A602	0000



																											12 mm ID × 18 mm OD
																											0.1	-0.013 to 0.013	-0.3 to 0.3	-0.5 to 0.5	Rockwell B14	—	ASTM B36	5	92678A604	0000



																											16 mm ID × 22 mm OD
																											0.1	-0.013 to 0.013	-0.3 to 0.3	-0.5 to 0.5	Rockwell B14	—	ASTM B36	5	92678A605	0000

													Copper





															8 mm ID × 14 mm OD
															0.1													-0.013 to 0.013	-0.3 to 0.3	-0.5 to 0.5	Rockwell F40	—	ASTM B152	5	94397A752	0000



																10 mm ID × 16 mm OD
																0.1												-0.013 to 0.013	-0.3 to 0.3	-0.5 to 0.5	Rockwell F40	—	ASTM B152	5	94397A753	0000

																Ultra-Chemical-Resistant PTFE





																													6 mm ID × 12 mm OD
0.1																													-0.135 to 0.135	-0.3 to 0.3	-0.5 to 0.5	—	White	—	5	90334A201	00000



																				12 mm ID × 18 mm OD
																				0.1									-0.135 to 0.135	-0.3 to 0.3	-0.5 to 0.5	—	White	—	5	90334A202	00000



																				20 mm ID × 28 mm OD
		0.1																		-0.135 to 0.135	-0.3 to 0.3								-0.5 to 0.5	—	White	—	5	90334A203	00000



			25 mm ID × 36 mm OD
			0.1																		-0.135 to 0.135								-0.3 to 0.3	-0.5 to 0.5	—	White	—	1	90334A204	0000

Slotted Shims

Image of ProductInUse. Front orientation. Shims. Precision Adjust, Slot, Sold Individually.

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, mm
	Thk., mm	Thk. Tolerance, mm	For Max. Screw Size	Wd.	Dp.	Min. Hardness	Identification Type	End Shape		Each		Each
18-8 Stainless Steel





				50 mm Lg. × 50 mm Wd. (Shim Trade Size A)
				0.1	-0.007 to 0.007	M15	15.9	25.4	Rockwell C40	Labeled	Tab	9722K911	00000	97235K915	00000



						75 mm Lg. × 75 mm Wd. (Shim Trade Size B)
						0.1	-0.007 to 0.007	M22	22.3	38.1	Rockwell C40	Labeled	Tab	9722K912	0000	97235K93	0000



								100 mm Lg. × 100 mm Wd. (Shim Trade Size C)
								0.1	-0.007 to 0.007	M30	31.8	50.8	Rockwell C40	Labeled	Tab	9722K913	0000	97235K93	0000



										125 mm Lg. × 125 mm Wd. (Shim Trade Size D)
										0.1	-0.007 to 0.007	M40	41.3	84.1	Rockwell C40	Labeled	Tab	9722K914	00000	———	0

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.

Carbon Steel—Best for dry areas since moisture will cause it to 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., mm	Thk. Tolerance, mm	Temper Rating	Type	Form	Specs. Met	Form		Each
18-8 Stainless Steel





				150 mm Wide × 1,250 mm Long
				0.1	-0.005 to 0.005	Full Hard	Material Certificate	Paper	ASTM A666	Roll	95055K13	000000

				Carbon Steel





								150 mm Wide × 2,500 mm Long
								0.1	-0.005 to 0.005	Full Hard	Material Certificate	Paper	ASTM A109, Fed. Spec. QQ-S-698	Roll	95085K13	00000

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.

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

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


	M2.5	3	3.2	6.4	0.1	0.5	10	92161A048	000000
	M3	3	3.3	4.7	0.1	0.8	10	92161A049	00000
	M5	3	5.2	9.5	0.1	0.8	10	92161A051	00000
	M6	3	6.4	11.1	0.1	0.9	5	92161A052	0000