M33 Threaded Rods | McMaster-Carr

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40,000 psi to 99,999 psi

100,000 psi or greater

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13 Products

Threaded Rods

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

High-Strength Steel

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

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





	M33 × 3.5 mm

	1	150,000	ISO Class 10.9	Rockwell C32	DIN 976	1078N99	0000000

Medium-Strength Steel

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-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-Plated Steel





	M33 × 3.5 mm

	1 m	110,000	ISO Class 8.8	Rockwell C20	DIN 976	99067A141	0000000


	Steel





					M33 × 3.5 mm

					300 mm	125,000	ASTM Grade B7	Rockwell C35	ASTM A193, DIN 976	93325A453	000000
					300 mm	110,000	ISO Class 8.8	Rockwell C20	DIN 976	99055A339	00000
					1 m	125,000	ASTM Grade B7	Rockwell C35	ASTM A193, DIN 976	93325A454	000000
					1 m	110,000	ISO Class 8.8	Rockwell C20	DIN 976	99055A341	000000
					2 m	125,000	ASTM Grade B7	Rockwell C35	ASTM A193, DIN 976	93325A455	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.

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.

	Specs. Met	Pkg. Qty.		Pkg.
Zinc-Plated Steel





	M33 × 3.5 mm

	300 mm	50,000	Rockwell B49	DIN 976	1	94595A251	0000000
	1 m	50,000	Rockwell B49	DIN 976	1	94595A252	00000


	Steel





					M33 × 3.5 mm

					300 mm	50,000	Rockwell B49	DIN 976	1	98861A235	00000
					1 m	50,000	Rockwell B49	DIN 976	1	98861A175	000000

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.

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





	M33 × 3.5 mm

	1	70,000	Not Rated	DIN 976	1	90024A318	0000000

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., mm	Wd., mm	Threading	Specs. Met		1-9	10-Up
18-8 Stainless Steel



		M33 × 3.5 mm	99	50	Fully Threaded	DIN 6334	93590A336	0000000	000000