M30 Shafts | McMaster-Carr

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42 Products

Fast-Travel Ball Screws and Nuts


	Ball Nuts, Externally Threaded Nut, Style B

Multiple thread channels (also known as thread starts) create faster linear travel than ball screws with a single thread start. Internal ball bearings provide smooth low-friction travel in applications that require high speeds, accurate positioning, and repeatable movement. To ensure compatibility, select components that have the same thread size and number of thread starts. Ball nuts are furnished with a tube to keep ball bearings in place. Do not remove the tube until you are ready to install the nuts onto the screws.

Externally Threaded Ball Nuts—Right-Hand Threaded

Image of Product. Front orientation. Contains Annotated. Ball Screws and Nuts. Fast-Travel Ball Screws and Nuts, Ball Nuts, Externally Threaded Nut, Style B.

Style B

Carbon Steel—Carbon steel ball screws and nuts are case hardened, so they resist wear better than standard carbon steel. However, they are less corrosion resistant than black-oxide alloy steel screws and nuts.

Travel Distance per Turn—Travel distance per turn, also known as screw lead, is the distance a ball nut moves with one revolution of the ball screw.

	Thread Size	Lg., mm	Dia., mm	No. of Thread Starts	Travel Distance per Turn, mm	External Thread Size	Hardness	Dynamic Thrust Load Cap., lb.	Max. Backlash, mm	Temp. Range, ° F		Each
Carbon Steel



	B	M16	50	39	4	16	M30	Rockwell C56	1,500	0.04	32 to 150	00000000	0000000

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







	M30 × 3.5 mm

	1 m	110,000	ISO Class 8.8	Rockwell C20	DIN 975	000000000	0000000


	Steel







					M30 × 1.5 mm

					1 m	125,000	ASTM Grade B7	Rockwell C35	ASTM A193, DIN 976	000000000	000000




							M30 × 2 mm

							300 mm	125,000	ASTM Grade B7	Rockwell C35	ASTM A193, DIN 975	000000000	000000


							1 m	125,000	ASTM Grade B7	Rockwell C35	ASTM A193, DIN 975	000000000	000000




									M30 × 3.5 mm

									300 mm	125,000	ASTM Grade B7	Rockwell C35	ASTM A193, DIN 976	000000000	00000


									300 mm	110,000	ISO Class 8.8	Rockwell C20	DIN 976	000000000	00000
									500 mm	125,000	ASTM Grade B7	Rockwell C35	ASTM A193, DIN 976	000000000	000000
									500 mm	110,000	ISO Class 8.8	Rockwell C20	DIN 976	000000000	000000
									1 m	125,000	ASTM Grade B7	Rockwell C35	ASTM A193, DIN 976	000000000	000000
									1 m	110,000	ISO Class 8.8	Rockwell C20	DIN 975	000000000	000000
									2 m	125,000	ASTM Grade B7	Rockwell C35	ASTM A193, DIN 976	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







	M30 × 3.5 mm

	100 mm	150,000	ISO Class 10.9	Rockwell C32	DIN 976	0000000	000000


	150 mm	150,000	ISO Class 10.9	Rockwell C32	DIN 976	0000000	00000
	200 mm	150,000	ISO Class 10.9	Rockwell C32	DIN 976	0000000	00000
	300 mm	150,000	ISO Class 10.9	Rockwell C32	DIN 976	0000000	00000
	500 mm	150,000	ISO Class 10.9	Rockwell C32	DIN 976	0000000	000000
	1 m	150,000	ISO Class 10.9	Rockwell C32	DIN 976	0000000	000000
	2 m	150,000	ISO Class 10.9	Rockwell C32	DIN 976	0000000	000000

Extreme-Strength Steel

Our strongest threaded rods have a tensile strength of 170,000 psi to hold up in your most demanding high-stress applications. They're about 20% stronger than high-strength steel rods. To avoid stripped threads during installation, make sure your nuts are also extreme-strength steel.

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

	Hardness	Specs. Met		Each
Steel







	M30 × 3.5 mm

	100 mm	170,000	ISO Class 12.9	Rockwell C39	DIN 976	00000000	000000


	150 mm	170,000	ISO Class 12.9	Rockwell C39	DIN 976	00000000	00000
	200 mm	170,000	ISO Class 12.9	Rockwell C39	DIN 976	00000000	00000
	300 mm	170,000	ISO Class 12.9	Rockwell C39	DIN 976	00000000	000000
	500 mm	170,000	ISO Class 12.9	Rockwell C39	DIN 976	00000000	000000
	1 m	170,000	ISO Class 12.9	Rockwell C39	DIN 976	0000000	000000
	2 m	170,000	ISO Class 12.9	Rockwell C39	DIN 976	00000000	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







	M30 × 3.5 mm

	300 mm	50,000	Rockwell B49	DIN 976	1	000000000	0000000


	1 m	50,000	Rockwell B49	DIN 976	1	000000000	00000


	Steel







					M30 × 1.5 mm

					1 m	50,000	Rockwell B49	DIN 976	1	000000000	000000




							M30 × 2 mm

							300 mm	50,000	Rockwell B49	DIN 976	1	000000000	00000


							1 m	50,000	Rockwell B49	DIN 976	1	000000000	000000




									M30 × 3.5 mm

									300 mm	50,000	Rockwell B49	DIN 976	1	000000000	00000


									1 m	50,000	Rockwell B49	DIN 976	1	000000000	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.

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.

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







	M30 × 3.5 mm

	300 mm	70,000	—	Not Rated	DIN 976	1	000000000	000000


	500 mm	70,000	—	Not Rated	DIN 976	1	000000000	000000
	1 m	70,000	—	Not Rated	DIN 976	1	000000000	000000
	2 m	70,000	—	Not Rated	DIN 976	1	000000000	000000


	Highly Corrosion-Resistant 316 Stainless Steel







					M30 × 3.5 mm

					300 mm	70,000	ASTM Grade B8M	Not Rated	ASTM A193, DIN 976	1	000000000	000000


					1 m	70,000	ASTM Grade B8M	Not Rated	ASTM A193, DIN 976	1	000000000	000000
					2 m	70,000	ASTM Grade B8M	Not Rated	ASTM A193, DIN 976	1	000000000	000000

Threaded on Both Ends Setup Studs

Known as setup studs, these studs withstand sideways forces better than fully threaded studs because they have a strong unthreaded middle. The unthreaded middle also makes more contact with unthreaded holes, creating better alignment than a fully threaded stud.

Steel

	Thread, mm
	Lg. (A)	Lg. (B)	Lg., mm	Tensile Strength, psi		Each
M30 × 3.5 mm



		43	200	315	125,000	000000000	000000

Black-Oxide Steel

Black-oxide steel studs resist rusting in dry environments.

DIN 6379—Studs that meet DIN standards meet dimensional and material requirements.

	Thread, mm
	Lg. (A)	Lg. (B)	Lg., mm	Tensile Strength, psi	Specs. Met		Each
M30 × 3.5 mm



		56	43	125	100,000	DIN 6379	000000000	000000