1 1/2"-8 Bolts | McMaster-Carr

Meet ASTM standards for use in high-pressure and high-temperature applications. Also known as pressure bolts, these screws are often used to secure pressure tanks, valves, and flanges. With a head that's about 10% wider than standard hex head screws, they handle heavier loads by distributing them over a larger area. The head also has six flat sides to keep wrenches and sockets from slipping and rounding off the drive.

Length is measured from under the head.

High-Strength Fastener—Commonly used to fasten components in valves, pumps, motors, and other high-stress applications. These screws have a tensile strength of 125,000 to 160,000 psi.

ASTM Grade B7—A reliable option for high-temperature machinery, such as boilers, steam turbines, and oil well equipment.

Steel—Unfinished steel screws are best for dry environments, since moisture will cause them to rust. They require little surface prep before applying a finish, so you can apply your own paint or coating.

Grip Length—Screws with a grip length have a precisely measured unthreaded section under the head, called a grip. It's stronger than the threaded section, so you can place it in joints exposed to sideways forces.

			Head
	Lg.	Grip Lg.	Wd.	Ht.	Threading	Thread Spacing	Tensile Strength, psi	Specs. Met		Each
High-Strength ASTM Grade B7 Steel







				1 1/2"-8

				3"	—	2 3/8"	15/16"	Fully Threaded	Fine	125,000	ASME B18.2.1 ASTM A193 ASTM A962	94705A116	000000


				3 1/2"	—	2 3/8"	15/16"	Fully Threaded	Fine	125,000	ASME B18.2.1 ASTM A193 ASTM A962	94705A117	00000
				4"	—	2 3/8"	15/16"	Fully Threaded	Fine	125,000	ASME B18.2.1 ASTM A193 ASTM A962	94705A118	00000
				4 1/2"	—	2 3/8"	15/16"	Fully Threaded	Fine	125,000	ASME B18.2.1 ASTM A193 ASTM A962	94705A119	00000
				5"	1 3/4"	2 3/8"	15/16"	Partially Threaded	Fine	125,000	ASME B18.2.1 ASTM A193 ASTM A962	94705A121	00000
				5 1/2"	2 1/4"	2 3/8"	15/16"	Partially Threaded	Fine	125,000	ASME B18.2.1 ASTM A193 ASTM A962	94705A122	00000
				6"	2 3/4"	2 3/8"	15/16"	Partially Threaded	Fine	125,000	ASME B18.2.1 ASTM A193 ASTM A962	94705A123	00000

Threaded Rods

Anchor, connect, or hang components in a wide variety of applications, from mounting I-beams to suspending light fixtures.

Medium-Strength Steel

Image of Product. Front orientation. Threaded Rods. Threaded Rods.

With tensile strengths from 110,000 psi to 125,000 psi, these rods are strong enough for most industrial applications, such as anchoring machinery and connecting pipe flanges. They are about twice as strong as low-strength steel rods. To avoid stripped threads during installation, make sure your nuts are also medium-strength steel.

Steel—Best for dry environments since moisture will cause these rods to rust.

	Hardness	Specs. Met		Each
Steel







	1 1/2"-8

	1	125,000	ASTM Grade B7	Rockwell C35	ASTM A193	98957A512	000000


	3	125,000	ASTM Grade B7	Rockwell C35	ASTM A193	98957A646	000000
	6	125,000	ASTM Grade B7	Rockwell C35	ASTM A193	98957A746	000000

High-Strength Steel

With a tensile strength of 150,000 psi, these rods are strong enough to stabilize steel frameworks and structural supports, such as I-beams. They are about 25% stronger than medium-strength steel rods. To avoid stripped threads during installation, make sure your nuts are also high-strength steel.

Steel—Best for dry environments since moisture will cause these rods to rust.

	Hardness	Specs. Met		Each
Steel







	1 1/2"-8

	3	150,000	ASTM Grade BD	Rockwell C33	ASTM A354 Grade BD	90322A282	0000000

Hoist Rings—For Lifting

Designed for angular lifting, hoist rings resist stresses that would bend or break an eyebolt. They have a lifting ring that pivots 180° front to back and a base that swivels 360° to compensate for pitch, roll, and sway when lifting heavy or unbalanced loads. Install the base of the hoist ring flush to the mounting surface and tighten to the recommended torque that is stamped on the ring. Torque wrenches are sold separately.

Note: Capacities listed are for vertical lifting only. As the lift angle changes from vertical, the amount of weight the hoist ring can lift is significantly reduced. For example, when lifting a 1,000 lb. load at a 45° angle, you must choose a hoist ring with a capacity of at least 1,400 lbs. Do not use at an angle less than 30°.

Warning: Never use to lift people or items over people.

Machined—Machined hoist rings have a smooth finish to protect slings and hooks from damage and excess wear during lifting.

Black-Oxide Steel—Best for dry environments. These hoist rings have a dark, matte coating for a finished look.

CE Marked—Hoist rings that are CE marked meet European safety standards.

											Each
	Thread Size	Thread Lg.	Inside Wd.	Overall Ht.	Vert. Cap., lb.	Movement	Specs. Met	Certification	Mil. Spec.		1-9	10-Up
Machined Black-Oxide Steel



		1 1/2"-8	2 3/4"	4 1/2"	15 1/4"	24,000	180° Pivot and 360° Swivel	ASME B30.26	CE Marked, Proof Test Certificate	MIL-STD-1365, MIL-STD-209	3052T131	0000000	0000000

Tension-Indicating Hoist Rings—For Lifting

An indicator dot changes from red to black when these hoist rings are properly tightened, eliminating the need for a torque wrench. The dot changes back to red if the hoist ring comes loose. Ideal for angular lifting, these hoist rings withstand stresses that bend or break eyebolts. They have a lifting ring that pivots 180° front to back and a base that swivels 360° to compensate for pitch, roll, and sway when lifting heavy or unbalanced loads.

Install the base of these hoist rings flush to your mounting surface.

Warning: Never use to lift people or items over people.

Black-Oxide Steel—Best for dry environments. These hoist rings have a dark, matte coating for a finished look.

	Rings												Replacement Bolt Kits
	Thread Size	Thread Lg.	Inside Wd.	Overall Ht.	Vert. Cap., lb.	Tension Indicated, ft·lbf	Indicator Temp., ° F	Movement	Specs. Met	Certification		Each		Each
Forged Black-Oxide Steel with Zinc-Plated Steel Bolt



		1 1/2"-8	2 3/4"	4 1/2"	15 1/4"	24,000	800	0 to 165	180° Pivot and 360° Swivel	ASME B30.26	CE Marked, Proof Test Certificate	5596N29	000000000	5596N49	0000000