M42 Threaded Rods | McMaster-Carr

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12 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-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







	M42 × 4.5 mm

	1 m	110,000	Class 8.8	Rockwell C20	DIN 976	99067A143	0000000


	Steel







					M42 × 4.5 mm

					300 mm	110,000	Class 8.8	Rockwell C20	DIN 976	99055A344	000000


					1 m	125,000	ASTM Grade B7	Rockwell C35	ASTM A193, DIN 976	93325A370	000000
					1 m	110,000	Class 8.8	Rockwell C20	DIN 976	99055A345	000000
					2 m	125,000	ASTM Grade B7	Rockwell C35	ASTM A193, DIN 976	93325A456	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







	M42 × 4.5 mm

	1	150,000	Class 10.9	Rockwell C32	DIN 976	1078N25	0000000


	2	150,000	Class 10.9	Rockwell C32	DIN 976	1078N109	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







	M42 × 4.5 mm

	300 mm	50,000	Rockwell B49	DIN 976	1	94595A255	0000000


	Steel







					M42 × 4.5 mm

					1 m	50,000	Rockwell B49	DIN 976	1	98861A572	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







	M42 × 4.5 mm

	300 mm	70,000	Not Rated	DIN 976	1	90024A323	0000000


	1 m	70,000	Not Rated	DIN 976	1	90024A324	000000

High-Pressure Stainless Steel Threaded Pipe Fittings

Use these heavy duty fittings in high-pressure flow applications.

Straight Adapters with Gasket

Female x Male

UN/UNF (SAE Straight) Thread—Also known as O-ring boss threads.

316 Stainless Steel—Fittings are the most corrosion resistant. They stand up to wet environments, just like 304 stainless steel fittings, but unlike 304 stainless steel, they will not corrode from salt water, chlorine solutions, and chemicals.

	Thread Size					316 Stainless Steel
	(A)	(B)	Dash Size (A)	Body Shape	Gasket Material	Max. Pressure @ Temp.		Each
UN/UNF (SAE Straight) Female × Metric Male



		1 5/8"-12	M42 × 2 mm	20	Hex	Buna-N	2,000 psi @ 72° F	51205K789	0000000