M30 Screws | McMaster-Carr

Coarse threads are the industry standard; choose these screws if you don’t know the pitch or threads per inch. Screws that meet ASME B18.3, ASME B18.3M, ISO 21269, and ISO 4762 (formerly DIN 912) comply with specifications for dimensional standards.

For technical drawings and 3-D models, click on a part number.

				Head
Lg., mm	Threading	Min. Thread Lg., mm	Thread Spacing	Dia., mm	Ht., mm	Drive Size, mm	Tensile Strength, psi	Specifications Met	Pkg. Qty.		Pkg.
M30 × 3.5 mm
Black-Oxide Class 12.9 Alloy Steel
60	Fully Threaded	__	Coarse	45	30	22	170,000	DIN 912, ISO 4762	1	000000000	00000
70	Fully Threaded	__	Coarse	45	30	22	170,000	DIN 912, ISO 4762	1	000000000	0000
80	Fully Threaded	__	Coarse	45	30	22	170,000	DIN 912, ISO 4762	1	000000000	0000
90	Fully Threaded	__	Coarse	45	30	22	170,000	DIN 912, ISO 4762	1	000000000	0000
100	Fully Threaded	__	Coarse	45	30	22	170,000	DIN 912, ISO 4762	1	000000000	00000
110	Partially Threaded	72	Coarse	45	30	22	170,000	DIN 912, ISO 4762	1	000000000	00000
120	Partially Threaded	72	Coarse	45	30	22	170,000	DIN 912, ISO 4762	1	000000000	00000
130	Partially Threaded	72	Coarse	45	30	22	170,000	DIN 912, ISO 4762	1	000000000	00000
140	Partially Threaded	72	Coarse	45	30	22	170,000	DIN 912, ISO 4762	1	000000000	00000
150	Partially Threaded	72	Coarse	45	30	22	170,000	DIN 912, ISO 4762	1	000000000	00000
160	Partially Threaded	72	Coarse	45	30	22	170,000	DIN 912, ISO 4762	1	000000000	00000
180	Partially Threaded	72	Coarse	45	30	22	170,000	DIN 912, ISO 4762	1	000000000	00000
200	Partially Threaded	72	Coarse	45	30	22	170,000	DIN 912, ISO 4762	1	000000000	00000
240	Partially Threaded	72	Coarse	45	30	22	170,000	DIN 912, ISO 4762	1	000000000	00000
300	Partially Threaded	72	Coarse	45	30	22	170,000	DIN 912, ISO 4762	1	000000000	00000

High-Strength Metric Class 10.9 Steel Hex Head Screws

Fully Threaded

Choose these Class 10.9 steel screws for high-stress applications, such as valves, pumps, motors, and automotive suspension systems. They are at least 25% stronger than medium-strength steel screws. Dimensions meet ISO (formerly DIN) or DIN specifications. Length is measured from under the head.

Steel screws should be used in dry, noncorrosive environments. Zinc yellow-chromate plated and zinc-plated steel screws resist corrosion in wet environments. Match the thread spacing of mating components. Coarse threads are the industry standard; choose these screws if you don’t know the pitch.

For technical drawings and 3-D models, click on a part number.

			Head
Lg., mm	Threading	Thread Spacing	Wd., mm	Ht., mm	Tensile Strength, psi	Specifications Met	Pkg. Qty.		Pkg.
Class 10.9 Steel
M30 × 3.5 mm
50	Fully Threaded	Coarse	46	18.7	150,000	ISO 4017, DIN 933	1	000000000	00000
60	Fully Threaded	Coarse	46	18.7	150,000	ISO 4017, DIN 933	1	000000000	0000
70	Fully Threaded	Coarse	46	18.7	150,000	ISO 4017, DIN 933	1	000000000	0000
80	Fully Threaded	Coarse	46	18.7	150,000	ISO 4017, DIN 933	1	000000000	0000
90	Fully Threaded	Coarse	46	18.7	150,000	ISO 4017, DIN 933	1	000000000	0000
100	Fully Threaded	Coarse	46	18.7	150,000	ISO 4017, DIN 933	1	000000000	00000
Zinc Yellow-Chromate Plated Class 10.9 Steel
M30 × 3.5 mm
70	Fully Threaded	Coarse	46	18.7	150,000	ISO 4017, DIN 933	1	000000000	00000
80	Fully Threaded	Coarse	46	18.7	150,000	ISO 4017, DIN 933	1	000000000	00000
90	Fully Threaded	Coarse	46	18.7	150,000	ISO 4017, DIN 933	1	000000000	00000
100	Fully Threaded	Coarse	46	18.7	150,000	ISO 4017, DIN 933	1	000000000	00000
120	Fully Threaded	Coarse	46	18.7	150,000	ISO 4017, DIN 933	1	000000000	00000

Medium-Strength Metric Class 8.8 Steel Hex Head Screws

Fully Threaded

These Class 8.8 steel screws are suitable for fastening most machinery and equipment. Dimensions meet ISO (formerly DIN) specifications. Length is measured from under the head.

Match the thread spacing of mating components. Coarse threads are the industry standard; choose these screws if you don’t know the pitch.

For technical drawings and 3-D models, click on a part number.

			Head
Lg., mm	Threading	Thread Spacing	Wd., mm	Ht., mm	Tensile Strength, psi	Specifications Met	Pkg. Qty.		Pkg.
Class 8.8 Steel
M30 × 3.5 mm
50	Fully Threaded	Coarse	46	18.7	110,000	ISO 4017, DIN 933	1	000000000	00000
60	Fully Threaded	Coarse	46	18.7	110,000	ISO 4017, DIN 933	1	000000000	0000
80	Fully Threaded	Coarse	46	18.7	110,000	ISO 4017, DIN 933	1	000000000	00000

Metric High-Strength Steel Heavy Hex
Head Screws for Structural Applications

Designed for construction and exterior building applications, these metric screws are often used to join I-beams and scaffolding. Their partial threading leaves an unthreaded portion that is strong enough to stand up to the sideways forces of joints. Made of Class 10.9 steel, these screws are at least 25% stronger than our medium-strength steel heavy hex head screws. They also have a hot-dipped galvanized finish that makes them 10 times more corrosion resistant than zinc plating, so they won't rust in wet environments. However, this finish is thicker than other finishes, so they should be used with DIN 6916 structural washers and DIN 6915 structural hex nuts. All meet ISO 7412 (formerly DIN 6914), an international standard for screw dimensions.

					Head
Lg., mm	Threading	Thread Spacing	Thread Lg., mm	Grip Lg., mm	Wd., mm	Ht., mm	Tensile Strength, psi	Specifications Met		Each
Hot-Dipped Galvanized Class 10.9 Steel
M30 × 3.5 mm
75	Partially Threaded	Coarse	40	35	50	18.7	150,000	DIN 6914, ISO 7412	000000000	000000
80	Partially Threaded	Coarse	40	40	50	18.7	150,000	DIN 6914, ISO 7412	000000000	00000
90	Partially Threaded	Coarse	40	50	50	18.7	150,000	DIN 6914, ISO 7412	000000000	00000
100	Partially Threaded	Coarse	42	58	50	18.7	150,000	DIN 6914, ISO 7412	000000000	00000
110	Partially Threaded	Coarse	42	68	50	18.7	150,000	DIN 6914, ISO 7412	000000000	00000
120	Partially Threaded	Coarse	42	78	50	18.7	150,000	DIN 6914, ISO 7412	000000000	00000
130	Partially Threaded	Coarse	42	88	50	18.7	150,000	DIN 6914, ISO 7412	000000000	00000
140	Partially Threaded	Coarse	42	98	50	18.7	150,000	DIN 6914, ISO 7412	000000000	00000
150	Partially Threaded	Coarse	42	108	50	18.7	150,000	DIN 6914, ISO 7412	000000000	00000
160	Partially Threaded	Coarse	42	118	50	18.7	150,000	DIN 6914, ISO 7412	000000000	00000
180	Partially Threaded	Coarse	42	138	50	18.7	150,000	DIN 6914, ISO 7412	000000000	00000
200	Partially Threaded	Coarse	42	158	50	18.7	150,000	DIN 6914, ISO 7412	000000000	00000

Metric Alloy Steel Hex Drive Flat Head Screws

Black Oxide with 60 Degree Countersink Angle

Made from alloy steel, these screws are nearly twice as strong as stainless steel flat head screws. They're angled under the head to sit flush within countersunk holes. Length is measured from the top of the head.

Black-oxide alloy steel screws have mild corrosion resistance in dry environments.

For technical drawings and 3-D models, click on a part number.

Black-Oxide Class 10.9 Alloy Steel—60° Countersink Angle
Lg., mm	Threading	Head Dia., mm	Head Ht., mm	Drive Size, mm	Tensile Strength, psi	Specifications Met	Pkg. Qty.		Pkg.
M30 × 3.5 mm
90	Fully Threaded	49	19.6	19 mm	120,000	DIN 7991	1	000000000	000000

Metric Alloy Steel Cup-Point Set Screws

These alloy steel set screws have a thin edge that digs into hard surfaces for a secure hold. Length listed is the overall length.

For technical drawings and 3-D models, click on a part number.

Alloy Steel
Lg., mm	Drive Size, mm	Hardness	Specifications Met	Pkg. Qty.		Pkg.
M30 × 3.5 mm
25	14	Rockwell C45	DIN 916, ISO 4029	1	000000000	000000
40	14	Rockwell C45	DIN 916, ISO 4029	1	000000000	00000
50	14	Rockwell C45	DIN 916, ISO 4029	1	000000000	00000

Metric Medium-Strength Steel Threaded Rods—Grade B7

These Grade B7 threaded rods meet the pressure and temperature requirements of ASTM A193 and are often used to secure pressure tanks, valves, and flanges.

For technical drawings and 3-D models, click on a part number.

Steel
Lg.	Thread Pitch, mm	Tensile Strength, psi	Hardness	Specifications Met		Each
M30
300 mm	3.5	120,000	Rockwell C35	ASTM A193, DIN 976	000000000	000000
1 m	3.5	120,000	Rockwell C35	ASTM A193, DIN 976	000000000	000000
2 m	3.5	120,000	Rockwell C35	ASTM A193, DIN 976	000000000	000000

Metric Fine-Thread Medium-Strength
Steel Threaded Rods—Grade B7

Grade B7 threaded rods meet the pressure and temperature requirements of ASTM A193 and are often used to secure pressure tanks, valves, and flanges.

For technical drawings and 3-D models, click on a part number.

Steel
Lg.	Thread Pitch, mm	Tensile Strength, psi	Hardness	Specifications Met		Each
M30
300 mm	2	120,000	Rockwell C35	ASTM A193	000000000	0000000
1 m	1.5	120,000	Rockwell C35	ASTM A193	000000000	000000
1 m	2	120,000	Rockwell C35	ASTM A193	000000000	000000

Medium-Strength Steel Threaded Rods—Class 8.8

An economical alternative to Grade B7 and Grade B16 threaded rods, these metric Class 8.8 rods are suitable for fastening most machinery and equipment.

Zinc-plated steel threaded rods resist corrosion in wet environments.

For technical drawings and 3-D models, click on a part number.

Steel
Lg.	Thread Pitch, mm	Tensile Strength, psi	Hardness	Specifications Met		Each
M30
300 mm	3.5	110,000	Rockwell C20	DIN 975	000000000	000000
1 m	3.5	110,000	Rockwell C20	DIN 975	000000000	00000
Zinc-Plated Steel
M30
1 m	3.5	110,000	Rockwell C20	DIN 975	000000000	000000

Metric Fine-Thread Low-Strength Steel Threaded Rods

About half the strength of medium-strength steel threaded rods, use these for light duty hanging, mounting, and fastening.

For technical drawings and 3-D models, click on a part number.

Steel
Lg.	Thread Pitch, mm	Tensile Strength, psi	Hardness	Specifications Met		Each
M30
300 mm	2	50,000	Rockwell B49	DIN 976	000000000	000000
1 m	1.5	50,000	Rockwell B49	DIN 976	000000000	00000
1 m	2	50,000	Rockwell B49	DIN 976	000000000	000000

Metric Low-Strength Steel Threaded Rods

These threaded rods are about half the strength of medium-strength steel threaded rods for light duty hanging, mounting, and fastening.

Zinc-plated steel threaded rods are corrosion resistant in wet environments.

For technical drawings and 3-D models, click on a part number.

Steel
Lg.	Thread Pitch, mm	Tensile Strength, psi	Hardness	Specifications Met	Pkg. Qty.		Pkg.
M30
300 mm	3.5	50,000	Rockwell B49	DIN 976	1	000000000	000000
1 m	3.5	50,000	Rockwell B49	DIN 976	1	000000000	00000
Zinc-Plated Steel
M30
300 mm	3.5	50,000	Rockwell B49	DIN 976	1	000000000	000000
1 m	3.5	50,000	Rockwell B49	DIN 976	1	000000000	00000

Metric High-Strength Steel Threaded Rods—Class 10.9

These Class 10.9 steel threaded rods are about 25% stronger than medium-strength steel rods.

For technical drawings and 3-D models, click on a part number.

Steel
Lg.	Thread Pitch, mm	Tensile Strength, psi	Hardness	Specifications Met		Each
M30
100 mm	3.5	150,000	Rockwell C32	DIN 976	0000000	000000
150 mm	3.5	150,000	Rockwell C32	DIN 976	0000000	00000
200 mm	3.5	150,000	Rockwell C32	DIN 976	0000000	00000
300 mm	3.5	150,000	Rockwell C32	DIN 976	0000000	00000
500 mm	3.5	150,000	Rockwell C32	DIN 976	0000000	00000
1 m	3.5	150,000	Rockwell C32	DIN 976	0000000	000000
2 m	3.5	150,000	Rockwell C32	DIN 976	0000000	000000

Metric Very-High-Strength Steel
Threaded Rods—Class 12.9

Class 12.9 rods are about 20% stronger than Class 10.9 threaded rods and are for use in heavy machinery.

For technical drawings and 3-D models, click on a part number.

Steel
Lg.	Thread Pitch, mm	Tensile Strength, psi	Hardness	Specifications Met		Each
M30
100 mm	3.5	170,000	Rockwell C39	DIN 976	00000000	000000
150 mm	3.5	170,000	Rockwell C39	DIN 976	00000000	00000
200 mm	3.5	170,000	Rockwell C39	DIN 976	00000000	00000
300 mm	3.5	170,000	Rockwell C39	DIN 976	00000000	00000
500 mm	3.5	170,000	Rockwell C39	DIN 976	00000000	000000
1 m	3.5	170,000	Rockwell C39	DIN 976	0000000	000000
2 m	3.5	170,000	Rockwell C39	DIN 976	00000000	000000

Metric 18-8 Stainless Steel Threaded Rods

These 18-8 stainless steel threaded rods have good chemical resistance and may be mildly magnetic.

For technical drawings and 3-D models, click on a part number.

18-8 Stainless Steel
Lg.	Thread Pitch, mm	Tensile Strength, psi	Hardness	Specifications Met	Pkg. Qty.		Pkg.
M30
300 mm	3.5	70,000	Not Rated	DIN 976	1	000000000	0000000
1 m	3.5	70,000	Not Rated	DIN 976	1	000000000	000000
2 m	3.5	70,000	Not Rated	DIN 976	1	000000000	000000

Metric Super-Corrosion-Resistant
316 Stainless Steel Threaded Rods

These 316 stainless steel threaded rods are more corrosion resistant than 18-8 and 410 stainless steel threaded rods and have excellent resistance to chemicals and salt water. They may be mildly magnetic.

For technical drawings and 3-D models, click on a part number.

316 Stainless Steel
Lg.	Thread Pitch, mm	Tensile Strength, psi	Hardness	Specifications Met	Pkg. Qty.		Pkg.
M30
300 mm	3.5	70,000	Not Rated	DIN 976	1	000000000	0000000
1 m	3.5	70,000	Not Rated	DIN 976	1	000000000	000000
2 m	3.5	70,000	Not Rated	DIN 976	1	000000000	000000

Setup Studs

Steel

Black-Oxide Steel

Combine these setup studs with T-slot nuts, flanged nuts, setup clamps, or setup blocks to clamp and hold workpieces, vises, and other objects onto your fixturing table. Also known as double-ended studs, they have threads on both ends. One end threads into a T-slot nut or flanged nut inside the table. The other end passes through a setup clamp and secures with a nut and washer. The middle of the stud is unthreaded for gripping and adjusting the stud.

These setup studs are also used to align parts during assembly. One end of the stud is threaded into the part being added, and the other end fits into the mounting hole of the mating part. Because the studs don't have a head, you have the option to thread them into holes from either end, but they require a nut. You can adjust the distance between the mating parts by tightening and loosening the nut.

Steel studs are low- or medium-strength carbon steel. With no protective coating, they have poor corrosion resistance. Avoid using them in humid and damp environments.

Black-oxide steel studs have a protective coating that resists corrosion in dry environments.

For technical drawings and 3-D models, click on a part number.

Metric—Steel

Thread
Lg. (A), mm	Lg. (B), mm	Lg., mm	Min. Tensile Strength, psi		Each
M30 × 3.5mm
43	200	315	125,000	000000000	000000
43	315	500	125,000	000000000	00000

Metric—Black-Oxide Steel

Thread
Lg. (A), mm	Lg. (B), mm	Lg., mm	Min. Tensile Strength, psi	Specifications Met		Each
M30 × 3.5mm
56	43	125	100,000	DIN 6379	000000000	000000

Eyebolts—For Lifting

With Shoulder

Also known as machinery eyebolts.

Zinc-plated steel eyebolts offer good corrosion resistance.

Galvanized steel eyebolts have a hot-dipped finish for more corrosion resistance than zinc-plated steel.

304 stainless steel eyebolts are more corrosion resistant than galvanized steel.

316 stainless steel are the most corrosion resistant eyebolts.

Note: Capacities listed are for vertical lifting only. Eyebolts with shoulder can be used for angular lifting up to 45°, but the capacities will be significantly reduced. For angular lifting, we recommend Hoist Rings.

Warning: Never use to lift people or items over people.

For technical drawings and 3-D models, click on a part number.

Metric Thread

Thread								With Shoulder
Size	Pitch, mm	Lg., mm	Shank Lg., mm	Overall Lg., mm	Eye Dia., mm	Vertical Capacity, lbs.	Specifications Met		Each
Steel
M30	3.5	60	60	192	55	14,100	__	0000000	000000
Zinc-Plated Steel
M30	3.5	45	45	154	60	7,050	DIN 580	0000000	00000
Galvanized Steel
M30	3.5	76	76	210	55	14,100	__	0000000	00000
304 Stainless Steel
M30	3.5	45	45	154	60	7,050	DIN 580	0000000	000000
316 Stainless Steel
M30	3.5	45	45	154	60	7,050	DIN 580	0000000	000000

Rotating Eyebolts—For Lifting

Unlike conventional eyebolts, you can rotate the eye 360° to match the angle of your load.

Powder-coated steel eyebolts are impact resistant, but less corrosion resistant than stainless steel eyebolts. They include a removable key for tightening the bolt.

Warning: Never use to lift people or items over people.

For technical drawings and 3-D models, click on a part number.

Metric Thread

Thread								With Shoulder
Size	Pitch, mm	Lg., mm	Shank Lg., mm	Overall Lg., mm	Eye Dia., mm	Vertical Capacity, lbs.	Color		Each
Powder-Coated Steel
M30	3.5	45	45	158	60	26,450	Pink	00000000	0000000

Eye Nuts—For Lifting

Create your own lifting eye by adding an eye nut to a stud or bolt.

Zinc-plated steel eye nuts offer good corrosion resistance.

316 stainless steel are the most corrosion resistant eye nuts.

Note: Capacity applies to the eye nut only. The stud or bolt you use will affect the overall capacity. Eye nuts are for vertical lifting only.

Warning: Never use to lift people or items over people.

For technical drawings and 3-D models, click on a part number.

Metric—Fully Threaded

	Thread
	Size	Pitch, mm	Overall Lg.	Eye Dia.	Vertical Capacity, lbs.	Specifications Met		Each
Steel
B	M30	3.5	139mm	50mm	14,000	__	0000000	000000
Zinc-Plated Steel
A	M30	3.5	109mm	60mm	7,050	DIN 582	0000000	00000
316 Stainless Steel
A	M30	3.5	109mm	60mm	7,050	__	0000000	000000