1 3/4"-12 Screws | McMaster-Carr

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 3/4"-12

	1	125,000	ASTM Grade B7	Rockwell C35	ASTM A193	000000000	000000


	3	125,000	ASTM Grade B7	Rockwell C35	ASTM A193	000000000	000000
	6	125,000	ASTM Grade B7	Rockwell C35	ASTM A193	000000000	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 3/4"-12

	3	150,000	ASTM Grade BD	Rockwell C33	ASTM A354 Grade BD	000000000	0000000


	6	150,000	ASTM Grade BD	Rockwell C33	ASTM A354 Grade BD	000000000	000000

Low-Strength Steel

With a tensile strength of 50,000 psi or 60,000 psi, these rods are often used to suspend light fixtures, cable trays, and conduit from ceilings. They're about half the strength of medium-strength steel rods. To avoid stripped threads during installation, make sure your nuts are also low-strength steel.

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

	Pkg. Qty.		Pkg.
Steel







	1 3/4"-12

	1	50,000	Rockwell B61	1	000000000	000000


	2	50,000	Rockwell B61	1	000000000	000000
	3	50,000	Rockwell B61	1	000000000	000000
	6	50,000	Rockwell B61	1	000000000	000000