9/16"-12 Rods | McMaster-Carr

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32 Products

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.

Zinc-Yellow-Chromate-Plated Steel—The most common choice for areas with occasional exposure to moisture.

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

	Hardness	Specs. Met		Each
Zinc-Yellow-Chromate-Plated Steel







	9/16"-12

	3 ft.	125,000	ASTM Grade B7	Rockwell C35	ASTM A193	000000000	000000


	Steel







					9/16"-12

					4"	125,000	ASTM Grade B7	Rockwell C35	ASTM A193	000000000	0000


					6"	125,000	ASTM Grade B7	Rockwell C35	ASTM A193	000000000	0000
					1 ft.	125,000	ASTM Grade B7	Rockwell C35	ASTM A193	000000000	0000
					2 ft.	125,000	ASTM Grade B7	Rockwell C35	ASTM A193	000000000	00000
					3 ft.	125,000	ASTM Grade B7	Rockwell C35	ASTM A193	000000000	00000
					6 ft.	125,000	ASTM Grade B7	Rockwell C35	ASTM A193	000000000	00000
					12 ft.	125,000	ASTM Grade B7	Rockwell C35	ASTM A193	000000000	00000

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







	9/16"-12

	4"	150,000	ASTM Grade BD	Rockwell C33	ASTM A354 Grade BD	000000000	000000


	6"	150,000	ASTM Grade BD	Rockwell C33	ASTM A354 Grade BD	000000000	00000
	1 ft.	150,000	ASTM Grade BD	Rockwell C33	ASTM A354 Grade BD	000000000	00000
	3 ft.	150,000	ASTM Grade BD	Rockwell C33	ASTM A354 Grade BD	000000000	00000

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.

Zinc-Plated Steel—The most common choice for areas with occasional exposure to moisture.

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

	Pkg. Qty.		Pkg.
Zinc-Plated Steel







	9/16"-12

	2	50,000	Rockwell B61	1	000000000	00000


	3	50,000	Rockwell B61	1	000000000	00000
	6	50,000	Rockwell B61	1	000000000	00000


	Steel







					9/16"-12

					2	50,000	Rockwell B61	1	000000000	0000


					3	50,000	Rockwell B61	1	000000000	0000
					6	50,000	Rockwell B61	1	000000000	00000

Stainless Steel

More corrosion resistant than steel rods and comparable in strength to low-strength steel.

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

	Hardness	Specs. Met	Pkg. Qty.		Pkg.
18-8 Stainless Steel







	9/16"-12

	4"	70,000	—	Rockwell B70	—	1	000000000	00000


	6"	70,000	—	Rockwell B70	—	1	000000000	0000
	1 ft.	70,000	—	Rockwell B70	—	1	000000000	00000
	1 ft.	70,000	ASTM Grade B8	Not Rated	ASTM A193	1	000000000	00000
	2 ft.	70,000	—	Rockwell B70	—	1	000000000	00000
	2 ft.	70,000	ASTM Grade B8	Not Rated	ASTM A193	1	000000000	00000
	3 ft.	70,000	—	Rockwell B70	—	1	000000000	00000
	3 ft.	70,000	ASTM Grade B8	Not Rated	ASTM A193	1	000000000	00000
	6 ft.	70,000	—	Rockwell B70	—	1	000000000	00000
	6 ft.	70,000	ASTM Grade B8	Not Rated	ASTM A193	1	000000000	00000

Coupling Nuts

Also known as extension nuts, these are commonly used to connect lengths of threaded rod and join threaded parts.

Low-Strength Steel

Rated Grade 2 or lower, these are about half as strong as medium-strength steel coupling nuts. Use them with threaded rods that have a comparable strength rating to avoid stripping threads during installation.

Zinc-Plated Steel—A step up from plain steel, the zinc plating withstands occasional exposure to moisture.

						Each
	Thread Size	Lg.	Wd.	Threading		1-9	10-Up
Zinc-Plated Steel



		9/16"-12	2 1/8"	13/16"	Fully Threaded	000000000	00000	00000

Corrosion-Resistant Stainless Steel

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

							Each
	Thread Size	Lg.	Wd.	Threading	Min. Thread Lg.		1-9	10-Up
18-8 Stainless Steel



		9/16"-12	2 1/8"	13/16"	Fully Threaded	—	000000000	000000	000000


		9/16"-12	5"	7/8"	Partially Threaded	3/4"	000000000	00000	00000

Brass

Brass—With a warm, polished look, these nuts are often chosen for their appearance. Similar to 18-8 stainless steel, brass is corrosion resistant enough to stand up to wet environments. It is also softer than other metals, so it's easier to thread together.

						Each
	Thread Size	Lg.	Wd.	Threading		1-9	10-Up
Brass



		9/16"-12	2 1/8"	13/16"	Fully Threaded	000000000	000000	000000