5/8"-18 Shoulder Bolts | McMaster-Carr

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100,000 psi or greater

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26 Products

Steel Hex-Drive Shoulder Screws

Our strongest standard-fit shoulder screws. With the highest tensile strength, they withstand stress and mechanical loads that would break other materials, such as aluminum, nickel, and stainless steel. However, they do sacrifice corrosion resistance.

Black-Oxide Alloy Steel—Typically chosen for their appearance, these screws have a dark, matte coating to create a finished look. They offer minimal corrosion resistance, so they're best for dry environments.

				Head				Certificate			Each
	Shoulder Lg.	Thread Size	Thread Lg.	Dia.	Ht.	Drive Size	Tensile Strength, psi	Type	Form		1-4	5-Up
Black-Oxide Alloy Steel







				3/4" Diameter Shoulder (-0.004" to -0.002" Tolerance)

				3/8"	5/8"-18	7/16"	1"	1/2"	3/8"	140,000	—	—	94361A382	000000	000000


				7/16"	5/8"-18	7/16"	1"	1/2"	3/8"	140,000	Material Certificate	Digital	94361A383	00000	00000
				1/2"	5/8"-18	7/16"	1"	1/2"	3/8"	140,000	—	—	94361A384	00000	00000
				5/8"	5/8"-18	7/16"	1"	1/2"	3/8"	140,000	Material Certificate	Digital	94361A385	00000	00000
				3/4"	5/8"-18	7/16"	1"	1/2"	3/8"	140,000	—	—	94361A386	00000	00000
				7/8"	5/8"-18	7/16"	1"	1/2"	3/8"	140,000	Material Certificate	Digital	94361A387	00000	00000
				1"	5/8"-18	7/16"	1"	1/2"	3/8"	140,000	Material Certificate	Digital	94361A388	00000	00000
				1 1/8"	5/8"-18	7/16"	1"	1/2"	3/8"	140,000	—	—	94361A389	00000	00000
				1 1/4"	5/8"-18	7/16"	1"	1/2"	3/8"	140,000	—	—	94361A391	00000	00000
				1 3/8"	5/8"-18	7/16"	1"	1/2"	3/8"	140,000	Material Certificate	Digital	94361A392	00000	00000
				1 1/2"	5/8"-18	7/16"	1"	1/2"	3/8"	140,000	Material Certificate	Digital	94361A393	00000	00000


				1 5/8"	5/8"-18	7/16"	1"	1/2"	3/8"	140,000	Material Certificate	Digital	94361A394	00000	00000
				1 3/4"	5/8"-18	7/16"	1"	1/2"	3/8"	140,000	Material Certificate	Digital	94361A395	00000	00000
				1 7/8"	5/8"-18	7/16"	1"	1/2"	3/8"	140,000	Material Certificate	Digital	94361A396	00000	00000
				2"	5/8"-18	7/16"	1"	1/2"	3/8"	140,000	—	—	94361A397	00000	00000

Shoulder Shims


Shoulder Shortening	Shoulder Lengthening

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 Lengthening—Wiggle over threads to add space or increase travel along the shoulder of screws. Stack these shims to get the exact spacing you need.

		Shoulder Shortening				Shoulder Lengthening
	Thk.	For Screw Size	Pkg. Qty.		Pkg.	For Screw Size	Pkg. Qty.		Pkg.
Spring Steel







				For 3/4" Diameter Shoulder

				0.005"	5/8"	10	91124A020	000000	5/8"	25	91140A241	000000


				0.01"	5/8"	25	91124A065	0000	—	—	———	0
				0.015"	5/8"	25	91124A058	0000	5/8"	25	91140A253	00000
				0.02"	5/8"	25	91124A040	0000	—	—	———	0
				0.032"	5/8"	25	91124A211	0000	5/8"	25	91140A266	00000
				0.062"	5/8"	25	91124A111	0000	—	—	———	0

Eyebolts—For Lifting

Create a secure attachment point for hooks, shackles, and other lifting equipment. Also known as machinery eyebolts, these eyebolts are used to lift heavy machines and materials. They have a closed eye that won’t bend under strain.

Warning: Never use to lift people or items over people. Capacities listed are for vertical lifting only.

Steel

With

Shoulder

With Shoulder—Use for lifting at angles up to 45° or for vertical lifting. Because angular lifting significantly reduces the eyebolt’s capacity, we recommend hoist rings for heavy loads.

	Thread							With Shoulder
	Size	Lg.	Shank Lg.	Eye Dia.	Vert. Cap., lb.	Specs. Met	Threading	Overall Lg.		Each
Closed Eye



		5/8"-18	1 1/2"	1 3/4"	1 3/8"	4,000	ASTM A489	Fully Threaded	4 9/16"	3014T264	000000

Zinc-Plated Steel

With

Shoulder

Zinc-plated steel eyebolts offer good corrosion resistance.

With Shoulder—Use for lifting at angles up to 45° or for vertical lifting. Because angular lifting significantly reduces the eyebolt’s capacity, we recommend hoist rings for heavy loads.

	Thread						With Shoulder
	Size	Lg.	Shank Lg.	Eye Dia.	Vert. Cap., lb.	Threading	Overall Lg.		Each
Closed Eye



		5/8"-18	1 3/4"	1 3/4"	1 3/8"	4,000	Fully Threaded	4 3/4"	3014T126	000000