Shortening Shim Washers | McMaster-Carr

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Corrosion Resistant

Won't rust in wet and outdoor environments

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Shims for Shortening Screw Shoulders

Image of ProductInUse. Front orientation. Contains Annotated. Shims. Sold Individually, Shoulder Shortening, Round.

Pare down the shoulder on shoulder screws. Slide these shims under the screw head to create the length you need. Use them to tighten the hold on bearings, pulleys, and sprockets, or shorten the length of travel along the shoulder.

You can stack multiple shims to achieve the exact shoulder length or space you need.

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.

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.

	Thk.	Thk. Tolerance	For Screw Size	ID	ID Tolerance	OD	OD Tolerance	Min. Hardness	Pkg. Qty.		Pkg.
18-8 Stainless Steel





				For 1/8" Diameter Shoulder
				0.005"	-0.0005" to 0.0005"	No. 4	1/8"	0" to 0.012"	1/4"	-0.005" to 0.002"	Rockwell B70	10	94773A606	00000
				0.01"	-0.001" to 0.001"	No. 4	1/8"	0" to 0.012"	1/4"	-0.005" to 0.002"	Rockwell B70	10	94773A647	0000
				0.016"	-0.002" to 0.002"	No. 4	1/8"	0" to 0.012"	1/4"	-0.005" to 0.002"	Rockwell B70	10	94773A679	0000
				0.02"	-0.002" to 0.002"	No. 4	1/8"	0" to 0.012"	1/4"	-0.005" to 0.002"	Rockwell B70	10	94773A706	0000
				0.03"	-0.003" to 0.003"	No. 4	1/8"	0" to 0.012"	1/4"	-0.005" to 0.002"	Rockwell B70	10	94773A737	0000
				0.06"	-0.004" to 0.004"	No. 4	1/8"	0" to 0.012"	1/4"	-0.005" to 0.002"	Rockwell B70	5	94773A766	0000



						For 3/16" Diameter Shoulder
						0.005"	-0.0005" to 0.0005"	No. 8	3/16"	0" to 0.012"	5/16"	-0.005" to 0.002"	Rockwell B70	10	94773A608	0000
						0.01"	-0.001" to 0.001"	No. 8	3/16"	0" to 0.012"	5/16"	-0.005" to 0.002"	Rockwell B70	10	94773A649	0000
						0.016"	-0.002" to 0.002"	No. 8	3/16"	0" to 0.012"	5/16"	-0.005" to 0.002"	Rockwell B70	10	94773A681	0000
						0.02"	-0.002" to 0.002"	No. 8	3/16"	0" to 0.012"	5/16"	-0.005" to 0.002"	Rockwell B70	10	94773A708	0000
						0.03"	-0.003" to 0.003"	No. 8	3/16"	0" to 0.012"	5/16"	-0.005" to 0.002"	Rockwell B70	10	94773A739	0000
						0.06"	-0.004" to 0.004"	No. 8	3/16"	0" to 0.012"	5/16"	-0.005" to 0.002"	Rockwell B70	5	94773A768	0000



								For 1/4" Diameter Shoulder
								0.005"	-0.0005" to 0.0005"	No. 10	1/4"	0" to 0.012"	3/8"	-0.005" to 0.002"	Rockwell B70	50	94773A610	0000
								0.01"	-0.001" to 0.001"	No. 10	1/4"	0" to 0.012"	3/8"	-0.005" to 0.002"	Rockwell B70	100	94773A651	00000
								0.016"	-0.002" to 0.002"	No. 10	1/4"	0" to 0.012"	3/8"	-0.005" to 0.002"	Rockwell B70	50	94773A683	00000
								0.02"	-0.0025" to 0.0025"	No. 10	1/4"	0" to 0.012"	3/8"	-0.005" to 0.002"	Rockwell B70	50	94773A710	0000
								0.03"	-0.003" to 0.003"	No. 10	1/4"	0" to 0.012"	3/8"	-0.005" to 0.002"	Rockwell B70	50	94773A741	00000
								0.06"	-0.0035" to 0.0035"	No. 10	1/4"	0" to 0.012"	3/8"	-0.005" to 0.002"	Rockwell B70	25	94773A770	0000



										For 5/16" Diameter Shoulder
										0.005"	-0.0005" to 0.0005"	1/4"	5/16"	0" to 0.012"	7/16"	-0.005" to 0.002"	Rockwell B70	50	94773A612	0000
										0.01"	-0.001" to 0.001"	1/4"	5/16"	0" to 0.012"	7/16"	-0.005" to 0.002"	Rockwell B70	25	94773A653	0000
										0.016"	-0.002" to 0.002"	1/4"	5/16"	0" to 0.012"	7/16"	-0.005" to 0.002"	Rockwell B70	25	94773A686	0000
										0.02"	-0.0025" to 0.0025"	1/4"	5/16"	0" to 0.012"	7/16"	-0.005" to 0.002"	Rockwell B70	25	94773A712	0000
										0.03"	-0.003" to 0.003"	1/4"	5/16"	0" to 0.012"	7/16"	-0.005" to 0.002"	Rockwell B70	100	94773A743	00000
										0.06"	-0.0035" to 0.0035"	1/4"	5/16"	0" to 0.012"	7/16"	-0.005" to 0.002"	Rockwell B70	25	94773A772	0000



												For 3/8" Diameter Shoulder
												0.005"	-0.0005" to 0.0005"	5/16"	3/8"	0" to 0.012"	9/16"	-0.005" to 0.002"	Rockwell B70	25	94773A614	0000
												0.01"	-0.001" to 0.001"	5/16"	3/8"	0" to 0.012"	9/16"	-0.005" to 0.002"	Rockwell B70	25	94773A655	00000
												0.016"	-0.002" to 0.002"	5/16"	3/8"	0" to 0.012"	9/16"	-0.005" to 0.002"	Rockwell B70	25	94773A688	00000
												0.02"	-0.0025" to 0.0025"	5/16"	3/8"	0" to 0.012"	9/16"	-0.005" to 0.002"	Rockwell B70	25	94773A714	0000
												0.03"	-0.003" to 0.003"	5/16"	3/8"	0" to 0.012"	9/16"	-0.005" to 0.002"	Rockwell B70	50	94773A745	00000
												0.06"	-0.0035" to 0.0035"	5/16"	3/8"	0" to 0.012"	9/16"	-0.005" to 0.002"	Rockwell B70	25	94773A774	0000



														For 1/2" Diameter Shoulder
														0.005"	-0.0005" to 0.0005"	3/8"	1/2"	0" to 0.012"	3/4"	-0.005" to 0.002"	Rockwell B70	25	94773A616	0000
														0.01"	-0.001" to 0.001"	3/8"	1/2"	0" to 0.012"	3/4"	-0.005" to 0.002"	Rockwell B70	25	94773A657	00000
														0.016"	-0.002" to 0.002"	3/8"	1/2"	0" to 0.012"	3/4"	-0.005" to 0.002"	Rockwell B70	25	94773A689	00000
														0.02"	-0.0025" to 0.0025"	3/8"	1/2"	0" to 0.012"	3/4"	-0.005" to 0.002"	Rockwell B70	25	94773A716	00000
														0.03"	-0.003" to 0.003"	3/8"	1/2"	0" to 0.012"	3/4"	-0.005" to 0.002"	Rockwell B70	50	94773A747	00000
														0.06"	-0.0035" to 0.0035"	3/8"	1/2"	0" to 0.012"	3/4"	-0.005" to 0.002"	Rockwell B70	25	94773A776	0000



	For 5/8" Diameter Shoulder
	0.005"														-0.0005" to 0.0005"	1/2"	5/8"	0" to 0.012"	7/8"	-0.005" to 0.002"	Rockwell B70	25	94773A301	0000
	0.01"														-0.001" to 0.001"	1/2"	5/8"	0" to 0.012"	7/8"	-0.005" to 0.002"	Rockwell B70	25	94773A659	00000
	0.016"	-0.002" to 0.002"													1/2"	5/8"	0" to 0.012"	7/8"	-0.005" to 0.002"	Rockwell B70	25	94773A691	00000
	0.02"	-0.0025" to 0.0025"	1/2"												5/8"	0" to 0.012"	7/8"	-0.005" to 0.002"	Rockwell B70	25	94773A718	00000
	0.03"	-0.003" to 0.003"	1/2"												5/8"	0" to 0.012"	7/8"	-0.005" to 0.002"	Rockwell B70	25	94773A749	00000
	0.06"	-0.0035" to 0.0035"	1/2"												5/8"	0" to 0.012"	7/8"	-0.005" to 0.002"	Rockwell B70	10	94773A778	0000



			For 3/4" Diameter Shoulder
			0.005"												-0.0005" to 0.0005"	5/8"	3/4"	0" to 0.012"	1"	-0.005" to 0.002"	Rockwell B70	25	94773A302	0000
			0.01"												-0.001" to 0.001"	5/8"	3/4"	0" to 0.012"	1"	-0.005" to 0.002"	Rockwell B70	25	94773A661	00000
			0.016"												-0.002" to 0.002"	5/8"	3/4"	0" to 0.012"	1"	-0.005" to 0.002"	Rockwell B70	10	94773A693	00000
			0.02"	-0.0025" to 0.0025"											5/8"	3/4"	0" to 0.012"	1"	-0.005" to 0.002"	Rockwell B70	25	94773A720	00000
			0.03"	-0.003" to 0.003"	5/8"										3/4"	0" to 0.012"	1"	-0.005" to 0.002"	Rockwell B70	10	94773A751	00000
			0.06"	-0.0035" to 0.0035"	5/8"										3/4"	0" to 0.012"	1"	-0.005" to 0.002"	Rockwell B70	10	94773A780	00000



					For 1" Diameter Shoulder
					0.005"										-0.0005" to 0.0005"	7/8"	1"	0" to 0.012"	1 1/4"	-0.005" to 0.002"	Rockwell B70	25	94773A303	00000
					0.01"										-0.001" to 0.001"	7/8"	1"	0" to 0.012"	1 1/4"	-0.005" to 0.002"	Rockwell B70	25	94773A304	00000
					0.03"										-0.003" to 0.003"	7/8"	1"	0" to 0.012"	1 1/4"	-0.005" to 0.002"	Rockwell B70	10	94773A305	00000
					0.06"										-0.0035" to 0.0035"	7/8"	1"	0" to 0.012"	1 1/4"	-0.005" to 0.002"	Rockwell B70	10	94773A306	00000



							For 4 mm Diameter Shoulder
							0.005"								-0.0005" to 0.0005"	M4	4 mm	0 mm to 0.25 mm	7.78 mm	0 mm to 0.25 mm	Rockwell B70	10	91437A401	00000
							0.01"								-0.001" to 0.001"	M4	4 mm	0 mm to 0.25 mm	7.78 mm	0 mm to 0.25 mm	Rockwell B70	10	91437A402	00000
							0.031"								-0.003" to 0.003"	M4	4 mm	0 mm to 0.25 mm	7.78 mm	0 mm to 0.25 mm	Rockwell B70	10	91437A403	00000



																For 5 mm Diameter Shoulder
								0.005"								-0.0005" to 0.0005"	M5	5 mm	0 mm to 0.25 mm	7.82 mm	0 mm to 0.25 mm	Rockwell B70	10	91437A404	00000
								0.01"	-0.001" to 0.001"							M5	5 mm	0 mm to 0.25 mm	7.82 mm	0 mm to 0.25 mm	Rockwell B70	10	91437A405	00000
								0.031"	-0.003" to 0.003"							M5	5 mm	0 mm to 0.25 mm	7.82 mm	0 mm to 0.25 mm	Rockwell B70	10	91437A406	00000



																For 6 mm Diameter Shoulder
																0.005"	-0.0005" to 0.0005"	M6	6 mm	0 mm to 0.25 mm	9.78 mm	-0.25 mm to 0 mm	Rockwell B70	10	91437A155	00000
																0.01"	-0.001" to 0.001"	M6	6 mm	0 mm to 0.25 mm	9.78 mm	-0.25 mm to 0 mm	Rockwell B70	10	91437A162	00000
																0.015"	-0.001" to 0.001"	M6	6 mm	0 mm to 0.25 mm	9.78 mm	-0.25 mm to 0 mm	Rockwell B70	10	91437A166	00000
										0.02"						-0.0015" to 0.0015"	M6	6 mm	0 mm to 0.25 mm	9.78 mm	-0.25 mm to 0 mm	Rockwell B70	10	91437A171	00000
										0.025"	-0.0015" to 0.0015"					M6	6 mm	0 mm to 0.25 mm	9.78 mm	-0.25 mm to 0 mm	Rockwell B70	10	91437A176	00000
										0.031"	-0.002" to 0.002"					M6	6 mm	0 mm to 0.25 mm	9.78 mm	-0.25 mm to 0 mm	Rockwell B70	10	91437A181	00000
										0.062"	-0.002" to 0.002"					M6	6 mm	0 mm to 0.25 mm	9.78 mm	-0.25 mm to 0 mm	Rockwell B70	5	91437A188	0000



																For 8 mm Diameter Shoulder
																0.005"	-0.0005" to 0.0005"	M8	8 mm	0 mm to 0.25 mm	12.73 mm	-0.25 mm to 0 mm	Rockwell B70	10	91437A248	00000
																0.01"	-0.001" to 0.001"	M8	8 mm	0 mm to 0.25 mm	12.73 mm	-0.25 mm to 0 mm	Rockwell B70	10	91437A255	00000
												0.015"				-0.001" to 0.001"	M8	8 mm	0 mm to 0.25 mm	12.73 mm	-0.25 mm to 0 mm	Rockwell B70	10	91437A263	00000
												0.02"	-0.0015" to 0.0015"			M8	8 mm	0 mm to 0.25 mm	12.73 mm	-0.25 mm to 0 mm	Rockwell B70	10	91437A269	00000
												0.025"	-0.0015" to 0.0015"			M8	8 mm	0 mm to 0.25 mm	12.73 mm	-0.25 mm to 0 mm	Rockwell B70	10	91437A274	00000
												0.031"	-0.002" to 0.002"			M8	8 mm	0 mm to 0.25 mm	12.73 mm	-0.25 mm to 0 mm	Rockwell B70	5	91437A278	0000
												0.062"	-0.002" to 0.002"			M8	8 mm	0 mm to 0.25 mm	12.73 mm	-0.25 mm to 0 mm	Rockwell B70	10	91437A282	00000



													For 10 mm Diameter Shoulder
													0.005"			-0.0005" to 0.0005"	M10	10 mm	0 mm to 0.25 mm	15.73 mm	-0.25 mm to 0 mm	Rockwell B70	10	91437A352	00000
													0.01"			-0.001" to 0.001"	M10	10 mm	0 mm to 0.25 mm	15.73 mm	-0.25 mm to 0 mm	Rockwell B70	10	91437A357	00000
													0.015"	-0.001" to 0.001"		M10	10 mm	0 mm to 0.25 mm	15.73 mm	-0.25 mm to 0 mm	Rockwell B70	10	91437A361	00000
													0.02"	-0.0015" to 0.0015"		M10	10 mm	0 mm to 0.25 mm	15.73 mm	-0.25 mm to 0 mm	Rockwell B70	10	91437A366	00000
													0.025"	-0.0015" to 0.0015"		M10	10 mm	0 mm to 0.25 mm	15.73 mm	-0.25 mm to 0 mm	Rockwell B70	10	91437A370	00000
													0.031"	-0.002" to 0.002"		M10	10 mm	0 mm to 0.25 mm	15.73 mm	-0.25 mm to 0 mm	Rockwell B70	5	91437A374	00000
													0.062"	-0.002" to 0.002"		M10	10 mm	0 mm to 0.25 mm	14.73 mm	-0.25 mm to 0 mm	Rockwell B70	10	91437A377	00000



													For 12 mm Diameter Shoulder
													0.005"	-0.0005" to 0.0005"		M12	12 mm	0 mm to 0.25 mm	17.73 mm	-0.25 mm to 0 mm	Rockwell B70	10	91437A448	00000
													0.01"	-0.001" to 0.001"		M12	12 mm	0 mm to 0.25 mm	17.73 mm	-0.25 mm to 0 mm	Rockwell B70	10	91437A457	00000
													0.015"	-0.001" to 0.001"		M12	12 mm	0 mm to 0.25 mm	17.73 mm	-0.25 mm to 0 mm	Rockwell B70	10	91437A462	00000
													0.02"	-0.0015" to 0.0015"		M12	12 mm	0 mm to 0.25 mm	17.73 mm	-0.25 mm to 0 mm	Rockwell B70	5	91437A468	0000
													0.025"	-0.0015" to 0.0015"		M12	12 mm	0 mm to 0.25 mm	17.73 mm	-0.25 mm to 0 mm	Rockwell B70	5	91437A473	0000
													0.031"	-0.002" to 0.002"		M12	12 mm	0 mm to 0.25 mm	17.73 mm	-0.25 mm to 0 mm	Rockwell B70	5	91437A478	00000
			0.062"										-0.002" to 0.002"	M12		12 mm	0 mm to 0.25 mm	17.73 mm	-0.25 mm to 0 mm	Rockwell B70	10	91437A483	00000



													For 16 mm Diameter Shoulder
													0.005"	-0.0005" to 0.0005"		M16	16 mm	0 mm to 0.25 mm	23.67 mm	-0.25 mm to 0 mm	Rockwell B70	5	91437A555	0000
													0.01"	-0.001" to 0.001"		M16	16 mm	0 mm to 0.25 mm	23.67 mm	-0.25 mm to 0 mm	Rockwell B70	5	91437A560	0000
													0.015"	-0.001" to 0.001"		M16	16 mm	0 mm to 0.25 mm	23.67 mm	-0.25 mm to 0 mm	Rockwell B70	5	91437A566	0000
					0.02"								-0.0015" to 0.0015"	M16		16 mm	0 mm to 0.25 mm	23.67 mm	-0.25 mm to 0 mm	Rockwell B70	5	91437A572	00000
					0.025"	-0.0015" to 0.0015"							M16	16 mm		0 mm to 0.25 mm	23.67 mm	-0.25 mm to 0 mm	Rockwell B70	5	91437A577	00000
					0.031"	-0.002" to 0.002"							M16	16 mm		0 mm to 0.25 mm	23.67 mm	-0.25 mm to 0 mm	Rockwell B70	5	91437A581	00000
					0.062"	-0.002" to 0.002"							M16	16 mm		0 mm to 0.25 mm	23.67 mm	-0.25 mm to 0 mm	Rockwell B70	5	91437A586	0000



							For 20 mm Diameter Shoulder
							0.005"						-0.0005" to 0.0005"	M20		20 mm	0 mm to 0.25 mm	29.67 mm	-0.25 mm to 0 mm	Rockwell B70	5	91437A654	00000
							0.01"						-0.001" to 0.001"	M20		20 mm	0 mm to 0.25 mm	29.67 mm	-0.25 mm to 0 mm	Rockwell B70	5	91437A659	00000
							0.015"						-0.001" to 0.001"	M20		20 mm	0 mm to 0.25 mm	29.67 mm	-0.25 mm to 0 mm	Rockwell B70	5	91437A666	0000
							0.02"						-0.0015" to 0.0015"	M20		20 mm	0 mm to 0.25 mm	29.67 mm	-0.25 mm to 0 mm	Rockwell B70	5	91437A669	00000
							0.025"						-0.0015" to 0.0015"	M20	20 mm	0 mm to 0.25 mm	29.67 mm	-0.25 mm to 0 mm	Rockwell B70	5	91437A673	00000
							0.031"						-0.002" to 0.002"	M20	20 mm	0 mm to 0.25 mm	29.67 mm	-0.25 mm to 0 mm	Rockwell B70	5	91437A677	00000
							0.062"						-0.002" to 0.002"	M20	20 mm	0 mm to 0.25 mm	29.67 mm	-0.25 mm to 0 mm	Rockwell B70	5	91437A688	00000



									For 30 mm Diameter Shoulder
									0.062"				-0.004" to 0.004"	M30	30 mm	0 mm to 0.25 mm	40 mm	0 mm to 0.25 mm	Rockwell B70	5	91437A407	00000

									Super-Corrosion-Resistant 316 Stainless Steel





																For 1/8" Diameter Shoulder
										0.005"						-0.0005" to 0.0005"	No. 4	1/8"	0" to 0.012"	1/4"	-0.005" to 0.002"	Rockwell B70	10	90792A209	0000
										0.01"	-0.001" to 0.001"					No. 4	1/8"	0" to 0.012"	1/4"	-0.005" to 0.002"	Rockwell B70	10	90792A309	0000
										0.03"	-0.003" to 0.003"					No. 4	1/8"	0" to 0.012"	1/4"	-0.005" to 0.002"	Rockwell B70	10	90792A409	0000



																For 3/16" Diameter Shoulder
																0.005"	-0.0005" to 0.0005"	No. 8	3/16"	0" to 0.012"	5/16"	-0.005" to 0.002"	Rockwell B70	10	90792A212	00000
																0.01"	-0.001" to 0.001"	No. 8	3/16"	0" to 0.012"	5/16"	-0.005" to 0.002"	Rockwell B70	10	90792A312	00000
0.03"																-0.003" to 0.003"	No. 8	3/16"	0" to 0.012"	5/16"	-0.005" to 0.002"	Rockwell B70	10	90792A412	00000



																For 1/4" Diameter Shoulder
																0.005"	-0.0005" to 0.0005"	No. 10	1/4"	0" to 0.012"	3/8"	-0.005" to 0.002"	Rockwell B70	10	90792A221	00000
																0.01"	-0.001" to 0.001"	No. 10	1/4"	0" to 0.012"	3/8"	-0.005" to 0.002"	Rockwell B70	10	90792A321	00000
																0.03"	-0.003" to 0.003"	No. 10	1/4"	0" to 0.012"	3/8"	-0.005" to 0.002"	Rockwell B70	10	90792A421	00000



		For 5/16" Diameter Shoulder
		0.005"															-0.0005" to 0.0005"	1/4"	5/16"	0" to 0.012"	7/16"	-0.005" to 0.002"	Rockwell B70	10	90792A229	00000
		0.01"															-0.001" to 0.001"	1/4"	5/16"	0" to 0.012"	7/16"	-0.005" to 0.002"	Rockwell B70	10	90792A329	00000
		0.03"															-0.003" to 0.003"	1/4"	5/16"	0" to 0.012"	7/16"	-0.005" to 0.002"	Rockwell B70	10	90792A429	00000



																		For 3/8" Diameter Shoulder
																		0.005"	-0.0005" to 0.0005"	5/16"	3/8"	0" to 0.012"	9/16"	-0.005" to 0.002"	Rockwell B70	10	90792A236	00000
																		0.01"	-0.001" to 0.001"	5/16"	3/8"	0" to 0.012"	9/16"	-0.005" to 0.002"	Rockwell B70	10	90792A336	00000
																		0.03"	-0.003" to 0.003"	5/16"	3/8"	0" to 0.012"	9/16"	-0.005" to 0.002"	Rockwell B70	10	90792A436	00000



																		For 1/2" Diameter Shoulder
																		0.005"	-0.0005" to 0.0005"	3/8"	1/2"	0" to 0.012"	3/4"	-0.005" to 0.002"	Rockwell B70	10	90792A245	00000
																		0.01"	-0.001" to 0.001"	3/8"	1/2"	0" to 0.012"	3/4"	-0.005" to 0.002"	Rockwell B70	10	90792A345	00000
																		0.03"	-0.003" to 0.003"	3/8"	1/2"	0" to 0.012"	3/4"	-0.005" to 0.002"	Rockwell B70	10	90792A445	00000



																				For 4 mm Diameter Shoulder
					0.005"															-0.0005" to 0.0005"	M4	4 mm	0 mm to 0.25 mm	7.78 mm	0 mm to 0.25 mm	Rockwell B70	10	96945A301	00000
					0.031"	-0.003" to 0.003"														M4	4 mm	0 mm to 0.25 mm	7.78 mm	0 mm to 0.25 mm	Rockwell B70	10	96945A303	0000



																				For 5 mm Diameter Shoulder
																				0.005"	-0.0005" to 0.0005"	M5	5 mm	0 mm to 0.25 mm	7.82 mm	0 mm to 0.25 mm	Rockwell B70	10	96945A304	00000
																				0.01"	-0.001" to 0.001"	M5	5 mm	0 mm to 0.25 mm	7.82 mm	0 mm to 0.25 mm	Rockwell B70	10	96945A305	00000
																				0.031"	-0.003" to 0.003"	M5	5 mm	0 mm to 0.25 mm	7.82 mm	0 mm to 0.25 mm	Rockwell B70	10	96945A306	0000



								For 6 mm Diameter Shoulder
								0.005"													-0.0005" to 0.0005"	M6	6 mm	0 mm to 0.25 mm	9.78 mm	-0.25 mm to 0 mm	Rockwell B70	10	96945A110	00000
								0.01"													-0.001" to 0.001"	M6	6 mm	0 mm to 0.25 mm	9.78 mm	-0.25 mm to 0 mm	Rockwell B70	10	96945A170	00000
								0.031"													-0.003" to 0.003"	M6	6 mm	0 mm to 0.25 mm	9.78 mm	-0.25 mm to 0 mm	Rockwell B70	10	96945A240	0000



													For 8 mm Diameter Shoulder
													0.005"								-0.0005" to 0.0005"	M8	8 mm	0 mm to 0.25 mm	12.73 mm	-0.25 mm to 0 mm	Rockwell B70	10	96945A120	00000
													0.01"								-0.001" to 0.001"	M8	8 mm	0 mm to 0.25 mm	12.73 mm	-0.25 mm to 0 mm	Rockwell B70	10	96945A180	00000
													0.031"	-0.003" to 0.003"							M8	8 mm	0 mm to 0.25 mm	12.73 mm	-0.25 mm to 0 mm	Rockwell B70	10	96945A250	0000



															For 10 mm Diameter Shoulder
															0.005"						-0.0005" to 0.0005"	M10	10 mm	0 mm to 0.25 mm	15.73 mm	-0.25 mm to 0 mm	Rockwell B70	10	96945A130	00000
										0.01"					-0.001" to 0.001"						M10	10 mm	0 mm to 0.25 mm	15.73 mm	-0.25 mm to 0 mm	Rockwell B70	10	96945A190	00000
										0.031"	-0.003" to 0.003"				M10						10 mm	0 mm to 0.25 mm	15.73 mm	-0.25 mm to 0 mm	Rockwell B70	10	96945A260	0000



For 12 mm Diameter Shoulder
0.005"															-0.0005" to 0.0005"						M12	12 mm	0 mm to 0.25 mm	17.73 mm	-0.25 mm to 0 mm	Rockwell B70	10	96945A140	00000
0.01"															-0.001" to 0.001"						M12	12 mm	0 mm to 0.25 mm	17.73 mm	-0.25 mm to 0 mm	Rockwell B70	10	96945A210	00000
0.031"															-0.003" to 0.003"						M12	12 mm	0 mm to 0.25 mm	17.73 mm	-0.25 mm to 0 mm	Rockwell B70	10	96945A270	00000



															For 16 mm Diameter Shoulder
															0.005"						-0.0005" to 0.0005"	M16	16 mm	0 mm to 0.25 mm	23.67 mm	-0.25 mm to 0 mm	Rockwell B70	5	96945A150	0000
	0.01"														-0.001" to 0.001"						M16	16 mm	0 mm to 0.25 mm	23.67 mm	-0.25 mm to 0 mm	Rockwell B70	5	96945A220	0000
	0.031"														-0.003" to 0.003"						M16	16 mm	0 mm to 0.25 mm	23.67 mm	-0.25 mm to 0 mm	Rockwell B70	10	96945A280	00000



																For 20 mm Diameter Shoulder
		0.005"														-0.0005" to 0.0005"					M20	20 mm	0 mm to 0.25 mm	29.67 mm	-0.25 mm to 0 mm	Rockwell B70	5	96945A160	0000
		0.01"														-0.001" to 0.001"					M20	20 mm	0 mm to 0.25 mm	29.67 mm	-0.25 mm to 0 mm	Rockwell B70	5	96945A230	0000
		0.031"														-0.003" to 0.003"					M20	20 mm	0 mm to 0.25 mm	29.67 mm	-0.25 mm to 0 mm	Rockwell B70	5	96945A290	0000

		Stress-Resistant Spring Steel





																	For 1/8" Diameter Shoulder
																	0.005"				-0.0005" to 0.0005"	No. 4	1/8"	0" to 0.012"	1/4"	-0.005" to 0.002"	Rockwell C40	10	91124A112	0000
																	0.01"				-0.002" to 0.002"	No. 4	1/8"	0" to 0.012"	1/4"	-0.005" to 0.002"	Rockwell C40	10	91124A114	0000
																	0.015"				-0.002" to 0.002"	No. 4	1/8"	0" to 0.012"	1/4"	-0.005" to 0.002"	Rockwell C40	10	91124A116	0000
																	0.02"				-0.002" to 0.002"	No. 4	1/8"	0" to 0.012"	1/4"	-0.005" to 0.002"	Rockwell C40	10	91124A118	0000
																	0.032"				-0.003" to 0.003"	No. 4	1/8"	0" to 0.012"	1/4"	-0.005" to 0.002"	Rockwell C40	10	91124A121	0000
																	0.062"				-0.004" to 0.004"	No. 4	1/8"	0" to 0.012"	1/4"	-0.005" to 0.002"	Rockwell C40	5	91124A123	0000



																		For 3/16" Diameter Shoulder
					0.005"													-0.0005" to 0.0005"				No. 8	3/16"	0" to 0.012"	5/16"	-0.005" to 0.002"	Rockwell C40	10	91124A113	0000
					0.01"	-0.002" to 0.002"												No. 8	3/16"			0" to 0.012"	5/16"	-0.005" to 0.002"	Rockwell C40	10	91124A115	0000
					0.015"	-0.002" to 0.002"												No. 8	3/16"			0" to 0.012"	5/16"	-0.005" to 0.002"	Rockwell C40	10	91124A117	0000
					0.02"	-0.002" to 0.002"												No. 8	3/16"			0" to 0.012"	5/16"	-0.005" to 0.002"	Rockwell C40	10	91124A119	0000
					0.032"	-0.003" to 0.003"												No. 8	3/16"			0" to 0.012"	5/16"	-0.005" to 0.002"	Rockwell C40	10	91124A122	0000
					0.062"	-0.004" to 0.004"												No. 8	3/16"			0" to 0.012"	5/16"	-0.005" to 0.002"	Rockwell C40	5	91124A124	0000



							For 1/4" Diameter Shoulder
							0.005"											-0.0005" to 0.0005"	No. 10			1/4"	0" to 0.012"	3/8"	-0.005" to 0.002"	Rockwell C40	25	91124A010	00000
							0.01"											-0.002" to 0.002"	No. 10			1/4"	0" to 0.012"	3/8"	-0.005" to 0.002"	Rockwell C40	25	91124A059	0000
							0.015"											-0.002" to 0.002"	No. 10			1/4"	0" to 0.012"	3/8"	-0.005" to 0.002"	Rockwell C40	25	91124A047	0000
							0.02"											-0.002" to 0.002"	No. 10			1/4"	0" to 0.012"	3/8"	-0.005" to 0.002"	Rockwell C40	25	91124A030	0000
							0.032"											-0.003" to 0.003"	No. 10	1/4"		0" to 0.012"	3/8"	-0.005" to 0.002"	Rockwell C40	100	91124A160	00000
							0.062"	-0.004" to 0.004"										No. 10	1/4"	0" to 0.012"		3/8"	-0.005" to 0.002"	Rockwell C40	100	91124A060	00000



									For 5/16" Diameter Shoulder
									0.005"									-0.0005" to 0.0005"	1/4"	5/16"		0" to 0.012"	7/16"	-0.005" to 0.002"	Rockwell C40	25	91124A012	00000
									0.01"									-0.002" to 0.002"	1/4"	5/16"		0" to 0.012"	7/16"	-0.005" to 0.002"	Rockwell C40	25	91124A061	0000
									0.015"									-0.002" to 0.002"	1/4"	5/16"		0" to 0.012"	7/16"	-0.005" to 0.002"	Rockwell C40	25	91124A048	0000
									0.02"				-0.002" to 0.002"	1/4"				5/16"	0" to 0.012"	7/16"		-0.005" to 0.002"	Rockwell C40	25	91124A034	0000
									0.032"				-0.003" to 0.003"	1/4"				5/16"	0" to 0.012"	7/16"		-0.005" to 0.002"	Rockwell C40	100	91124A170	00000
									0.062"				-0.004" to 0.004"	1/4"				5/16"	0" to 0.012"	7/16"		-0.005" to 0.002"	Rockwell C40	100	91124A070	00000



														For 3/8" Diameter Shoulder
										0.005"				-0.0005" to 0.0005"				5/16"	3/8"	0" to 0.012"		9/16"	-0.005" to 0.002"	Rockwell C40	25	91124A014	00000
										0.01"	-0.002" to 0.002"			5/16"				3/8"	0" to 0.012"	9/16"		-0.005" to 0.002"	Rockwell C40	25	91124A062	0000
										0.015"	-0.002" to 0.002"			5/16"				3/8"	0" to 0.012"	9/16"		-0.005" to 0.002"	Rockwell C40	25	91124A049	0000
0.02"										-0.002" to 0.002"	5/16"			3/8"				0" to 0.012"	9/16"	-0.005" to 0.002"		Rockwell C40	25	91124A037	0000
0.032"										-0.003" to 0.003"	5/16"			3/8"				0" to 0.012"	9/16"	-0.005" to 0.002"		Rockwell C40	100	91124A180	00000
0.062"										-0.004" to 0.004"	5/16"			3/8"				0" to 0.012"	9/16"	-0.005" to 0.002"		Rockwell C40	100	91124A080	00000



											For 1/2" Diameter Shoulder
	0.005"										-0.0005" to 0.0005"	3/8"		1/2"				0" to 0.012"	3/4"	-0.005" to 0.002"		Rockwell C40	10	91124A016	00000
	0.01"										-0.002" to 0.002"	3/8"		1/2"				0" to 0.012"	3/4"	-0.005" to 0.002"		Rockwell C40	25	91124A063	0000
	0.015"										-0.002" to 0.002"	3/8"		1/2"				0" to 0.012"	3/4"	-0.005" to 0.002"		Rockwell C40	25	91124A050	0000
	0.02"										-0.002" to 0.002"	3/8"		1/2"				0" to 0.012"	3/4"	-0.005" to 0.002"		Rockwell C40	25	91124A038	0000
	0.032"										-0.003" to 0.003"	3/8"		1/2"				0" to 0.012"	3/4"	-0.005" to 0.002"		Rockwell C40	50	91124A190	00000
	0.062"										-0.004" to 0.004"	3/8"		1/2"	0" to 0.012"			3/4"	-0.005" to 0.002"	Rockwell C40		50	91124A090	00000



											For 5/8" Diameter Shoulder
											0.005"	-0.0005" to 0.0005"		1/2"	5/8"			0" to 0.012"	7/8"	-0.005" to 0.002"		Rockwell C40	10	91124A018	00000
			0.01"								-0.002" to 0.002"	1/2"		5/8"	0" to 0.012"			7/8"	-0.005" to 0.002"	Rockwell C40		25	91124A064	0000
			0.015"	-0.002" to 0.002"							1/2"	5/8"		0" to 0.012"	7/8"			-0.005" to 0.002"	Rockwell C40	25		91124A057	0000
			0.02"	-0.002" to 0.002"							1/2"	5/8"		0" to 0.012"	7/8"			-0.005" to 0.002"	Rockwell C40	25		91124A039	0000
			0.032"	-0.003" to 0.003"							1/2"	5/8"		0" to 0.012"	7/8"	-0.005" to 0.002"		Rockwell C40	25	91124A201		0000
			0.062"	-0.004" to 0.004"							1/2"	5/8"		0" to 0.012"	7/8"	-0.005" to 0.002"		Rockwell C40	25	91124A101		0000



											For 3/4" Diameter Shoulder
											0.005"	-0.0005" to 0.0005"		5/8"	3/4"	0" to 0.012"		1"	-0.005" to 0.002"	Rockwell C40		10	91124A020	00000
											0.01"	-0.002" to 0.002"		5/8"	3/4"	0" to 0.012"		1"	-0.005" to 0.002"	Rockwell C40		25	91124A065	0000
											0.015"	-0.002" to 0.002"		5/8"	3/4"	0" to 0.012"		1"	-0.005" to 0.002"	Rockwell C40		25	91124A058	0000
											0.02"	-0.002" to 0.002"		5/8"	3/4"	0" to 0.012"		1"	-0.005" to 0.002"	Rockwell C40		25	91124A040	0000
											0.032"	-0.003" to 0.003"		5/8"	3/4"	0" to 0.012"		1"	-0.005" to 0.002"	Rockwell C40		25	91124A211	0000
											0.062"	-0.004" to 0.004"		5/8"	3/4"	0" to 0.012"		1"	-0.005" to 0.002"	Rockwell C40		25	91124A111	0000



														For 5 mm Diameter Shoulder
														0.005"	-0.0005" to 0.0005"	M5	5 mm	0 mm to 0.25 mm	7.82 mm	-0.25 mm to 0 mm	Rockwell C40	5	92927A522	0000
					0.01"									-0.001" to 0.001"	M5	5 mm	0 mm to 0.25 mm	7.82 mm	-0.25 mm to 0 mm	Rockwell C40	5	92927A526	0000



														For 6 mm Diameter Shoulder
														0.005"	-0.0005" to 0.0005"	M6	6 mm	0 mm to 0.25 mm	9.78 mm	-0.25 mm to 0 mm	Rockwell C40	5	92927A537	0000
														0.01"	-0.001" to 0.001"	M6	6 mm	0 mm to 0.25 mm	9.78 mm	-0.25 mm to 0 mm	Rockwell C40	5	92927A540	0000
														0.02"	-0.002" to 0.002"	M6	6 mm	0 mm to 0.25 mm	9.78 mm	-0.25 mm to 0 mm	Rockwell C40	10	92927A917	0000
														0.06"	-0.004" to 0.004"	M6	6 mm	0 mm to 0.25 mm	9.78 mm	-0.25 mm to 0 mm	Rockwell C40	5	92927A931	0000



														For 8 mm Diameter Shoulder
														0.005"	-0.0005" to 0.0005"	M8	8 mm	0 mm to 0.25 mm	12.73 mm	-0.25 mm to 0 mm	Rockwell C40	5	92927A555	0000
														0.01"	-0.001" to 0.001"	M8	8 mm	0 mm to 0.25 mm	12.73 mm	-0.25 mm to 0 mm	Rockwell C40	5	92927A559	0000
														0.015"	-0.001" to 0.001"	M8	8 mm	0 mm to 0.25 mm	12.73 mm	-0.25 mm to 0 mm	Rockwell C40	10	92927A912	0000
														0.02"	-0.002" to 0.002"	M8	8 mm	0 mm to 0.25 mm	12.73 mm	-0.25 mm to 0 mm	Rockwell C40	10	92927A918	00000
														0.031"	-0.003" to 0.003"	M8	8 mm	0 mm to 0.25 mm	12.73 mm	-0.25 mm to 0 mm	Rockwell C40	10	92927A925	0000
														0.06"	-0.004" to 0.004"	M8	8 mm	0 mm to 0.25 mm	12.73 mm	-0.25 mm to 0 mm	Rockwell C40	5	92927A932	0000



															For 10 mm Diameter Shoulder
															0.005"	-0.0005" to 0.0005"	M10	10 mm	0 mm to 0.25 mm	14.73 mm	-0.25 mm to 0 mm	Rockwell C40	5	92927A574	0000
													0.01"		-0.001" to 0.001"	M10	10 mm	0 mm to 0.25 mm	14.73 mm	-0.25 mm to 0 mm	Rockwell C40	5	92927A578	0000
													0.015"		-0.001" to 0.001"	M10	10 mm	0 mm to 0.25 mm	15.73 mm	-0.25 mm to 0 mm	Rockwell C40	10	92927A913	00000
													0.02"		-0.002" to 0.002"	M10	10 mm	0 mm to 0.25 mm	15.73 mm	-0.25 mm to 0 mm	Rockwell C40	10	92927A919	00000
													0.031"		-0.003" to 0.003"	M10	10 mm	0 mm to 0.25 mm	15.73 mm	-0.25 mm to 0 mm	Rockwell C40	10	92927A926	00000
													0.06"		-0.004" to 0.004"	M10	10 mm	0 mm to 0.25 mm	15.73 mm	-0.25 mm to 0 mm	Rockwell C40	5	92927A933	0000



													For 12 mm Diameter Shoulder
													0.005"		-0.0005" to 0.0005"	M12	12 mm	0 mm to 0.25 mm	17.73 mm	-0.25 mm to 0 mm	Rockwell C40	5	92927A591	0000
													0.01"		-0.001" to 0.001"	M12	12 mm	0 mm to 0.25 mm	17.73 mm	-0.25 mm to 0 mm	Rockwell C40	5	92927A595	0000
													0.015"		-0.001" to 0.001"	M12	12 mm	0 mm to 0.25 mm	17.73 mm	-0.25 mm to 0 mm	Rockwell C40	10	92927A914	00000
													0.02"		-0.002" to 0.002"	M12	12 mm	0 mm to 0.25 mm	17.73 mm	-0.25 mm to 0 mm	Rockwell C40	10	92927A921	00000
													0.031"		-0.003" to 0.003"	M12	12 mm	0 mm to 0.25 mm	17.73 mm	-0.25 mm to 0 mm	Rockwell C40	10	92927A927	00000
													0.06"		-0.004" to 0.004"	M12	12 mm	0 mm to 0.25 mm	17.73 mm	-0.25 mm to 0 mm	Rockwell C40	5	92927A934	0000



													For 16 mm Diameter Shoulder
													0.01"		-0.001" to 0.001"	M16	16 mm	0 mm to 0.25 mm	23.67 mm	-0.25 mm to 0 mm	Rockwell C40	5	92927A609	0000
													0.015"		-0.001" to 0.001"	M16	16 mm	0 mm to 0.25 mm	23.67 mm	-0.25 mm to 0 mm	Rockwell C40	5	92927A915	0000
													0.02"		-0.002" to 0.002"	M16	16 mm	0 mm to 0.25 mm	23.67 mm	-0.25 mm to 0 mm	Rockwell C40	5	92927A922	0000
													0.031"		-0.003" to 0.003"	M16	16 mm	0 mm to 0.25 mm	23.67 mm	-0.25 mm to 0 mm	Rockwell C40	5	92927A928	0000
													0.06"		-0.004" to 0.004"	M16	16 mm	0 mm to 0.25 mm	23.67 mm	-0.25 mm to 0 mm	Rockwell C40	5	92927A935	0000



				For 20 mm Diameter Shoulder
				0.015"											-0.001" to 0.001"	M20	20 mm	0 mm to 0.25 mm	29.67 mm	-0.25 mm to 0 mm	Rockwell C40	5	92927A916	0000
				0.02"											-0.002" to 0.002"	M20	20 mm	0 mm to 0.25 mm	29.67 mm	-0.25 mm to 0 mm	Rockwell C40	5	92927A923	0000
				0.06"											-0.004" to 0.004"	M20	20 mm	0 mm to 0.25 mm	29.67 mm	-0.25 mm to 0 mm	Rockwell C40	5	92927A936	0000

Shim Assortments for Shortening Screw Shoulders

Image of Product. Front orientation. Shims. Round, Sold as Assortments, Shoulder Shortening.

Customize your shoulder lengths by keeping multiple shoulder-shortening shim sizes on hand. Pare down the shoulder on shoulder screws by sliding these shims under the screw head to create the length you need. Use them to tighten the hold on bearings, pulleys, and sprockets, or shorten the length of travel along the shoulder.

You can stack multiple shims to achieve the exact shoulder length or space you need.

Plastic Box—Labels in the lid make it easy to quickly find the right size.

	For Shoulder Dia.	Thicknesses Included	Container Type		Each
Stress-Resistant Spring Steel


	270	1/4", 5/16", 3/8", 1/2", 5/8", 3/4"	0.005", 0.015", 0.032"	Plastic Box	91124A800	0000000