5-40 Threaded Rods | McMaster-Carr

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40,000 psi to 99,999 psi

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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.

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







	5-40

	1"	50,000	Rockwell B61	10	95475A403	000000


	2"	50,000	Rockwell B61	10	95475A404	00000
	1 ft.	50,000	Rockwell B61	1	90034A048	0000
	2 ft.	50,000	Rockwell B61	1	90034A006	0000
	3 ft.	50,000	Rockwell B61	1	98841A006	00000
	6 ft.	50,000	Rockwell B61	1	98914A053	00000


	Steel







					5-40

					1"	50,000	Rockwell B61	10	91565A403	00000


					1 ft.	50,000	Rockwell B61	1	98790A049	0000
					2 ft.	50,000	Rockwell B61	1	98790A006	0000
					3 ft.	50,000	Rockwell B61	1	98837A006	0000

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.

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

	Pkg. Qty.		Pkg.
18-8 Stainless Steel







	5-40

	1"	70,000	Rockwell B70	10	95412A308	00000


	2"	70,000	Rockwell B70	10	95412A309	00000
	4"	70,000	Rockwell B70	5	95412A310	0000
	2 ft.	70,000	Rockwell B70	1	98804A006	0000
	3 ft.	70,000	Rockwell B70	1	98847A006	0000
	6 ft.	70,000	Rockwell B70	1	98920A006	00000


	Highly Corrosion-Resistant 316 Stainless Steel







					5-40

					1"	70,000	Rockwell B70	10	90575A151	00000


					2"	70,000	Rockwell B70	10	90575A152	00000
					1 ft.	70,000	Rockwell B70	1	93250A215	0000
					3 ft.	70,000	Rockwell B70	1	93250A216	00000
					6 ft.	70,000	Rockwell B70	1	93250A217	00000

Aluminum

6061 Aluminum—One-third the weight of steel, these rods are commonly used in automation and other applications with weight limits. They're an alternative to stainless steel for rust resistance but are not as strong.

	Pkg. Qty.		Pkg.
6061 Aluminum







	5-40

	2"	40,000	Rockwell B40	10	93225A417	000000


	3 ft.	40,000	Rockwell B40	1	94435A506	00000
	6 ft.	40,000	Rockwell B40	1	94435A507	00000

Brass

Brass—Conductive and nonmagnetic, brass rods are commonly used to secure electrical equipment, such as circuit board assemblies and mounting brackets, inside enclosures.

	Pkg. Qty.		Pkg.
Brass







	5-40

	2	50,000	Rockwell B55	1	98812A006	00000

Tapped D-Profile Rotary Shafts

Directly attach accessories and securely mount power-transmission components. These shafts have threaded ends to connect fan blades, mixer propellers, and other accessories with a fastener. The flat length mates with D-shaped bores and gives set screws an even surface to dig into, so gears, bearings, and sprockets won’t slip as the shaft rotates. Turned, ground, and polished, these shafts reduce vibration, evenly distribute loads, and improve accuracy.

Carbon Steel—Strong and easy to machine. These shafts work best in dry environments since moisture will cause steel to rust.

			Thread				Material
	Lg.	Flat Wd.	Size	Lg.	Straightness Tolerance	Diameter Tolerance	Hardness	Hardness Rating		Each
Carbon Steel







				1/4" Diameter

				6"	1/8"	5-40	0.375"	0.012"/1 ft.	-0.003" to 0"	Rockwell B90	Medium	8017T1	000000


				12"	1/8"	5-40	0.375"	0.012"/1 ft.	-0.003" to 0"	Rockwell B90	Medium	8017T7	00000
				24"	1/8"	5-40	0.375"	0.012"/1 ft.	-0.003" to 0"	Rockwell B90	Medium	8017T14	00000
				48"	1/8"	5-40	0.375"	0.012"/1 ft.	-0.003" to 0"	Rockwell B90	Medium	8017T27	00000

Left-Hand to Right-Hand Female Hex Thread Adapters

Often called sleeve nuts, these thread adapters fasten parts with right-hand threads to parts with left-hand threads.

Aluminum—At about a third of the weight of steel adapters, aluminum adapters are the lightest we offer. They resist corrosion in wet environments.

			Thread Lg.		Thread Fit		Hex				Each
	Thread Size (A)	Thread Size (B)	(A)	(B)	(A)	(B)	Size	Length	Hardness		1-9	10-Up
Aluminum



		5-40	5-40	1/4"	1/4"	Unified Standard Class 2B	Unified Standard Class 2B	5/16"	1"	Rockwell B56	96864A102	000000	000000

Coupling Nuts

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

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		1-9	10-49	50-Up
18-8 Stainless Steel



		5-40	7/16"	5/16"	Fully Threaded	90268A207	00000	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	10-49	50-Up
Brass



		5-40	7/16"	5/16"	Fully Threaded	90465A313	00000	00000	00000