5-40 Shoulder Bolts | McMaster-Carr

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51 Products

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Request the exact shoulder length you're looking for

4 products

Chemical Resistant

Won't degrade when exposed to most chemicals

18 products

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Same Size

Harness superior holding strength compared to other shoulder screws

23 products

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Fit into nonstandard tapped holes in older or specialized equipment

28 products

Same-Size Thread Stainless Steel Hex-Drive Shoulder Screws

Harness superior holding power with screws that also won't rust. Threads that match the shoulder diameter create a tighter hold than screws with a standard thread diameter. Use them in thicker materials and larger holes. While more corrosion resistant than alloy steel screws, they're not as strong.

Check out our Made-to-Order Same-Size Thread Stainless Steel Hex-Drive Shoulder Screws if you don't see the shoulder length you need.

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

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

				Head				Certificate			Each
	Shoulder Lg.	Thread Size	Thread Lg.	Dia.	Ht.	Drive Size	Tensile Strength, psi	Type	Form		1-4	5-Up
18-8 Stainless Steel







				1/8" Diameter Shoulder (-0.004" to -0.002" Tolerance)

				1/8"	5-40	5/32"	1/4"	1/8"	5/64"	70,000	—	—	91273A111	00000	00000


				3/16"	5-40	5/32"	1/4"	1/8"	5/64"	70,000	—	—	91273A911	0000	0000
				1/4"	5-40	5/32"	1/4"	1/8"	5/64"	70,000	—	—	91273A113	0000	0000
				5/16"	5-40	5/32"	1/4"	1/8"	5/64"	70,000	—	—	91273A114	0000	0000
				3/8"	5-40	5/32"	1/4"	1/8"	5/64"	70,000	—	—	91273A115	0000	0000
				1/2"	5-40	5/32"	1/4"	1/8"	5/64"	70,000	—	—	91273A116	0000	0000
				5/8"	5-40	5/32"	1/4"	1/8"	5/64"	70,000	—	—	91273A117	0000	0000
				3/4"	5-40	5/32"	1/4"	1/8"	5/64"	70,000	—	—	91273A118	0000	0000
				1"	5-40	5/32"	1/4"	1/8"	5/64"	70,000	—	—	91273A119	0000	0000


				Black-Oxide 18-8 Stainless Steel







								1/8" Diameter Shoulder (-0.004" to -0.002" Tolerance)

								3/16"	5-40	5/32"	1/4"	1/8"	5/64"	70,000	—	—	91273A524	0000	0000


								1/4"	5-40	5/32"	1/4"	1/8"	5/64"	70,000	Material Certificate	Digital	91273A525	0000	0000
								3/8"	5-40	5/32"	1/4"	1/8"	5/64"	70,000	—	—	91273A527	0000	0000
								1/2"	5-40	5/32"	1/4"	1/8"	5/64"	70,000	Material Certificate	Digital	91273A528	0000	0000
								5/8"	5-40	5/32"	1/4"	1/8"	5/64"	70,000	—	—	91273A529	0000	0000
								1"	5-40	5/32"	1/4"	1/8"	5/64"	70,000	—	—	91273A532	0000	0000

Shoulder Shims

Shoulder

Shortening

Shoulder Shortening—Pare down the shoulder on screws or tighten the screw's hold. Stack multiple shims to get the exact spacing you need.

		Shoulder Shortening
	Thk.	For Screw Size	Pkg. Qty.		Pkg.
18-8 Stainless Steel







				For 1/8" Diameter Shoulder

				0.005"	No. 4	10	94773A606	00000


				0.01"	No. 4	10	94773A647	0000
				0.016"	No. 4	10	94773A679	0000
				0.02"	No. 4	10	94773A706	0000
				0.03"	No. 4	10	94773A737	0000
				0.06"	No. 4	5	94773A766	0000

Stainless Steel Hex-Drive Shoulder Screws

These screws hold up against moisture and chemicals better than their steel counterparts, but they aren't as strong.

Check out our Made-to-Order Stainless Steel Hex-Drive Shoulder Screws if you don't see the shoulder length you need.

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

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

Highly Corrosion-Resistant Black-Oxide 316 Stainless Steel—Combines a finished appearance with the rust resistance of 316 stainless steel. Even if the coating wears off, these screws will hold up against corrosive agents in most environments, including salt water and most chemicals.

				Head				Certificate			Each
	Shoulder Lg.	Thread Size	Thread Lg.	Dia.	Ht.	Drive Size	Tensile Strength, psi	Type	Form		1-4	5-Up
18-8 Stainless Steel







				5/32" Diameter Shoulder (-0.004" to -0.002" Tolerance)

				1/8"	5-40	3/16"	9/32"	1/8"	3/32"	70,000	—	—	97832A347	00000	00000


				5/32"	5-40	3/16"	9/32"	1/8"	3/32"	70,000	—	—	97832A348	0000	0000
				3/16"	5-40	3/16"	9/32"	1/8"	3/32"	70,000	Material Certificate	Digital	97832A349	0000	0000
				1/4"	5-40	3/16"	9/32"	1/8"	3/32"	70,000	—	—	97832A350	0000	0000
				3/8"	5-40	3/16"	9/32"	1/8"	3/32"	70,000	—	—	97832A352	0000	0000
				1/2"	5-40	3/16"	9/32"	1/8"	3/32"	70,000	—	—	97832A353	0000	0000
				3/4"	5-40	3/16"	9/32"	1/8"	3/32"	70,000	—	—	97832A354	0000	0000
				1"	5-40	3/16"	9/32"	1/8"	3/32"	70,000	—	—	97832A355	0000	0000


				Highly Corrosion-Resistant 316 Stainless Steel







								5/32" Diameter Shoulder (-0.004" to -0.002" Tolerance)

								1/8"	5-40	3/16"	9/32"	1/8"	3/32"	70,000	—	—	97345A302	0000	0000


								5/32"	5-40	3/16"	9/32"	1/8"	3/32"	70,000	—	—	97345A304	0000	0000
								3/16"	5-40	3/16"	9/32"	1/8"	3/32"	70,000	Material Certificate	Digital	97345A305	0000	0000
								1/4"	5-40	3/16"	9/32"	1/8"	3/32"	70,000	—	—	97345A310	0000	0000
								5/16"	5-40	3/16"	9/32"	1/8"	3/32"	70,000	Material Certificate	Digital	97345A311	00000	0000
								3/8"	5-40	3/16"	9/32"	1/8"	3/32"	70,000	Material Certificate	Digital	97345A312	00000	0000
								1/2"	5-40	3/16"	9/32"	1/8"	3/32"	70,000	Material Certificate	Digital	97345A313	00000	0000
								3/4"	5-40	3/16"	9/32"	1/8"	3/32"	70,000	Material Certificate	Digital	97345A314	00000	00000
								1"	5-40	3/16"	9/32"	1/8"	3/32"	70,000	Material Certificate	Digital	97345A316	00000	00000


								Highly Corrosion-Resistant Black-Oxide 316 Stainless Steel







												5/32" Diameter Shoulder (-0.004" to -0.002" Tolerance)

												1/8"	5-40	3/16"	9/32"	1/8"	3/32"	70,000	Material Certificate	Digital	8077A211	00000	0000


												5/32"	5-40	3/16"	9/32"	1/8"	3/32"	70,000	Material Certificate	Digital	8077A197	00000	0000
												3/16"	5-40	3/16"	9/32"	1/8"	3/32"	70,000	Material Certificate	Digital	8077A214	00000	00000
												1/4"	5-40	3/16"	9/32"	1/8"	3/32"	70,000	Material Certificate	Digital	8077A199	00000	00000
												5/16"	5-40	3/16"	9/32"	1/8"	3/32"	70,000	Material Certificate	Digital	8077A215	00000	00000
												3/8"	5-40	3/16"	9/32"	1/8"	3/32"	70,000	Material Certificate	Digital	8077A213	00000	00000
												1/2"	5-40	3/16"	9/32"	1/8"	3/32"	70,000	Material Certificate	Digital	8077A198	00000	00000
												3/4"	5-40	3/16"	9/32"	1/8"	3/32"	70,000	Material Certificate	Digital	8077A212	00000	00000
1"												5-40	3/16"	9/32"	1/8"	3/32"	70,000	Material Certificate	Digital	8077A196	00000	00000

Made-to-Order Same-Size Thread Stainless Steel Hex-Drive Shoulder Screws

Harness superior holding power with custom-shoulder-length screws that also won't rust. These are ideal for replacing fasteners in older machines or for testing prototypes. Threads that match the shoulder diameter give them a tighter hold than screws with a standard thread diameter. Use them in thicker materials and larger holes.

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

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

				Head				Certificate			Each
	Choose a Shoulder Length	Thread Size	Thread Lg.	Dia.	Ht.	Drive Size	Tensile Strength, psi	Type	Form		1-4	5-9	10-Up
18-8 Stainless Steel







				1/8" Diameter Shoulder (-0.004" to -0.002" Tolerance)

				0.13" to 1.99"	5-40	5/32"	1/4"	1/8"	5/64"	70,000	Material Certificate	Digital	92183A143	000000	000000	00000


				2.00" to 3.99"	5-40	5/32"	1/4"	1/8"	5/64"	70,000	Material Certificate	Digital	92183A153	00000	00000	0000

Made-to-Order Stainless Steel Hex-Drive Shoulder Screws

Specify the exact shoulder length you need in screws that won't rust. These are ideal for replacing fasteners in older machines or for testing prototypes.

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

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

				Head				Certificate			Each
	Choose a Shoulder Length	Thread Size	Thread Lg.	Dia.	Ht.	Drive Size	Tensile Strength, psi	Type	Form		1-4	5-9	10-Up
18-8 Stainless Steel







				5/32" Diameter Shoulder (-0.004" to -0.002" Tolerance)

				0.13" to 1.99"	5-40	3/16"	9/32"	1/8"	3/32"	70,000	Material Certificate	Digital	92183A171	000000	000000	00000


				2.00" to 3.99"	5-40	3/16"	9/32"	1/8"	3/32"	70,000	Material Certificate	Digital	92183A181	00000	00000	00000