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.
M36 × 4 mm
Black-Oxide Class 12.9 Alloy Steel
60	Fully Threaded	__	Coarse	54	36	27	170,000	DIN 912, ISO 4762	1	000000000	000000
70	Fully Threaded	__	Coarse	54	36	27	170,000	DIN 912, ISO 4762	1	000000000	00000
80	Fully Threaded	__	Coarse	54	36	27	170,000	DIN 912, ISO 4762	1	000000000	00000
90	Fully Threaded	__	Coarse	54	36	27	170,000	DIN 912, ISO 4762	1	000000000	00000
100	Fully Threaded	__	Coarse	54	36	27	170,000	DIN 912, ISO 4762	1	000000000	00000
110	Fully Threaded	__	Coarse	54	36	27	170,000	DIN 912, ISO 4762	1	000000000	00000
120	Partially Threaded	84	Coarse	54	36	27	170,000	DIN 912, ISO 4762	1	000000000	00000
130	Partially Threaded	84	Coarse	54	36	27	170,000	DIN 912, ISO 4762	1	000000000	00000
140	Partially Threaded	84	Coarse	54	36	27	170,000	DIN 912, ISO 4762	1	000000000	00000
150	Partially Threaded	84	Coarse	54	36	27	170,000	DIN 912, ISO 4762	1	000000000	00000
160	Partially Threaded	84	Coarse	54	36	27	170,000	DIN 912, ISO 4762	1	000000000	00000
180	Partially Threaded	84	Coarse	54	36	27	170,000	DIN 912, ISO 4762	1	000000000	00000
200	Partially Threaded	84	Coarse	54	36	27	170,000	DIN 912, ISO 4762	1	000000000	00000
240	Partially Threaded	84	Coarse	54	36	27	170,000	DIN 912, ISO 4762	1	000000000	00000
300	Partially Threaded	84	Coarse	54	36	27	170,000	DIN 912, ISO 4762	1	000000000	00000

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.
M36 × 4 mm
40	14	Rockwell C45	DIN 916, ISO 4029	1	000000000	000000
50	14	Rockwell C45	DIN 916, ISO 4029	1	000000000	000000

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
M36
100 mm	4	150,000	Rockwell C32	DIN 975	00000000	000000
150 mm	4	150,000	Rockwell C32	DIN 975	00000000	00000
200 mm	4	150,000	Rockwell C32	DIN 975	00000000	00000
300 mm	4	150,000	Rockwell C32	DIN 975	00000000	00000
500 mm	4	150,000	Rockwell C32	DIN 975	00000000	000000
1 m	4	150,000	Rockwell C32	DIN 975	0000000	000000
2 m	4	150,000	Rockwell C32	DIN 975	00000000	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
M36
50 mm	4	170,000	Rockwell C39	DIN 975	00000000	000000
100 mm	4	170,000	Rockwell C39	DIN 975	00000000	00000
150 mm	4	170,000	Rockwell C39	DIN 975	00000000	00000
200 mm	4	170,000	Rockwell C39	DIN 975	00000000	000000
300 mm	4	170,000	Rockwell C39	DIN 975	00000000	000000
500 mm	4	170,000	Rockwell C39	DIN 975	00000000	000000
1 m	4	170,000	Rockwell C39	DIN 975	00000000	000000
2 m	4	170,000	Rockwell C39	DIN 975	00000000	000000

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
M36
300 mm	4	120,000	Rockwell C35	ASTM A193, DIN 976	000000000	000000
1 m	4	120,000	Rockwell C35	ASTM A193, DIN 976	000000000	000000
2 m	4	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
M36
300 mm	3	120,000	Rockwell C35	ASTM A193	000000000	0000000
1 m	3	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
M36
300 mm	4	110,000	Rockwell C20	DIN 975	000000000	000000
1 m	4	110,000	Rockwell C20	DIN 975	000000000	000000
Zinc-Plated Steel
M36
1 m	4	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
M36
300 mm	3	50,000	Rockwell B49	DIN 976	000000000	000000
1 m	3	50,000	Rockwell B49	DIN 976	000000000	00000

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.
M36
300 mm	4	50,000	Rockwell B49	DIN 976	1	000000000	000000
1 m	4	50,000	Rockwell B49	DIN 976	1	000000000	00000
Zinc-Plated Steel
M36
300 mm	4	50,000	Rockwell B49	DIN 976	1	000000000	000000
1 m	4	50,000	Rockwell B49	DIN 976	1	000000000	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.
M36
300 mm	4	70,000	Not Rated	DIN 976	1	000000000	0000000
1 m	4	70,000	Not Rated	DIN 976	1	000000000	000000
2 m	4	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.
M36
300 mm	4	70,000	Not Rated	DIN 976	1	000000000	0000000
1 m	4	70,000	Not Rated	DIN 976	1	000000000	000000
2 m	4	70,000	Not Rated	DIN 976	1	000000000	000000

Metric 18-8 Stainless Steel Coupling Nuts

Stainless Steel

Made from 18-8 stainless steel, these metric coupling nuts have good chemical resistance and may be mildly magnetic. Also known as extension nuts, use them to connect and extend threaded rods.

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

Thread						Each
Size	Pitch, mm	Lg., mm	Wd., mm	Specifications Met		1-9	10-Up
18-8 Stainless Steel
M36	4	108	55	DIN 6334	000000000	0000000	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
M36	4	72	72	223	63	19,750	__	0000000	000000
Zinc-Plated Steel
M36	4	54	54	182	70	10,125	DIN 580	0000000	00000
Galvanized Steel
M36	4	89	89	241	63	19,750	__	0000000	00000
304 Stainless Steel
M36	4	54	54	182	70	10,125	DIN 580	0000000	000000
316 Stainless Steel
M36	4	54	54	182	70	10,125	DIN 580	0000000	000000

Eye Nuts—For Lifting

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

304 stainless steel eye nuts are more corrosion resistant than galvanized steel.

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 Thread

	Thread
	Size	Pitch, mm	Overall Lg., mm	Eye Dia., mm	Vertical Capacity, lbs.		Each
Steel
B	M36	4	165	63	19,000	0000000	0000000
304 Stainless Steel
A	M36	4	128	70	10,125	0000000	000000

Setup Studs

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.

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
M36 × 4mm
51	80	160	125,000	000000000	000000
51	200	315	125,000	000000000	00000
51	315	500	125,000	000000000	000000

T-Slot Nuts

Steel

Designed to slide into T-slot tracks on machine tool tables, use these nuts to secure clamps and workpieces.

Fully threaded nuts allow a stud to extend beyond the bottom of the nut.

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

Metric

			Base				Fully Threaded
Thread Size	Thread Pitch, mm	For Slot Wd., mm	Ht., mm	Wd., mm	O'all Ht., mm	Specifications Met		Each
Black-Oxide Steel
M36	4	42	26	65	52	DIN 508	000000000	000000

Metric Ball Screws and Nuts

Internal ball bearings provide smooth low-friction travel in applications that require high speeds, accurate positioning, and repeatable movement. Also known as single-start ball screws and nuts, these have a single thread that runs the length of the screw. They operate with more torque than fast-travel ball screws and nuts. To ensure compatibility, select components that have the same thread size and pitch. 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.

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

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

Ball Screws—Right-Hand Threaded

Root diameter indicates the diameter the ball screw will be after machining away the threads.

Carbon Steel
Thread Size	Thread Pitch, mm	Lg., mm	No. of Thread Starts	Travel Distance per Turn, mm	Accuracy for Travel Distance per Turn	Root Dia., mm	Hardness	Temperature Range, °F		Each
M36	10	1,000	1	10	±0.210 mm per 300 mm	30.5	Rockwell C58	Not Rated to 175°	00000000	0000000
M36	10	1,500	1	10	±0.210 mm per 300 mm	30.5	Rockwell C58	Not Rated to 175°	00000000	000000
M36	10	2,000	1	10	±0.210 mm per 300 mm	30.5	Rockwell C58	Not Rated to 175°	00000000	000000
M36	10	2,500	1	10	±0.210 mm per 300 mm	30.5	Rockwell C58	Not Rated to 175°	00000000	000000
M36	10	3,000	1	10	±0.210 mm per 300 mm	30.5	Rockwell C58	Not Rated to 175°	00000000	000000

Platform Ball Nuts—Right-Hand Threaded

Alloy Steel
Thread Size	Thread Pitch, mm	Lg., mm	Wd., mm	Ht., mm	Center Ht., mm	No. of Thread Starts	Travel Distance per Turn, mm	Hardness	Dynamic Thrust Load Cap., lbs.	Max. Backlash, mm	Includes	Temperature Range, °F		Each
M36	10	64	86	67	29	1	10	Rockwell C58	4,670	0.2	Seals	Not Rated to 175°	00000000	0000000
M36	10	96	86	67	29	1	10	Rockwell C58	8,490	0.2	Seals	Not Rated to 175°	00000000	000000

Flange Ball Nuts—Right-Hand Threaded

				Flange
Thread Size	Thread Pitch, mm	Lg., mm	Dia., mm	Dia., mm	Thick., mm	No. of Thread Starts	Travel Distance per Turn, mm	Hardness	Dynamic Thrust Load Cap., lbs.	Max. Backlash, mm	Includes	Temperature Range, °F		Each
Alloy Steel
M36	10	70	70	110	17	1	10	Rockwell C58	4,670	0.2	Seals	Not Rated° to 175°	00000000	0000000
M36	10	100	70	110	17	1	10	Rockwell C58	8,490	0.2	Seals	Not Rated° to 175°	00000000	000000

Metric Fast-Travel Ball Screws and Nuts

With multiple thread starts, these metric ball screws create linear travel that’s approximately three times faster than ball screws with a single thread start. They’re ideal for applications with an actuator. The ball nuts have internal ball bearings to produce smooth, low-friction travel for applications that require high speed, accurate positioning, and repeatable movement. They come with a tube to keep the ball bearings in place. Do not remove the tube until you’re ready to install the nuts onto the screws. All of these ball nuts have an end cap on each end to stabilize fast-rotating motion. End caps also dampen the noise from the ball bearings and make the ball nuts more compact. Seals on the ball nuts keep out dust.

To ensure compatibility, select components that have the same thread size and pitch.

Ball nuts with four mounting holes have a lower profile than ball nuts with six mounting holes, so they’re better when assembly height clearance is tight.

Ball nuts with six mounting holes have a support bearing for greater axial rigidity than ball nuts with four mounting holes. They’re responsive to motor and actuator movements.

Root diameter indicates the diameter the ball screw will be after machining away the threads.

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

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

Ball Screws—Right-Hand Threaded

Carbon Steel
Thread Size	Thread Pitch, mm	Lg., mm	No. of Thread Starts	Travel Distance per Turn, mm	Accuracy for Travel Distance per Turn	Root Dia., mm	Hardness	Temp. Range, °F		Each
M36	20	1,000	2	20	±0.210 mm per 300 mm	31.2	Rockwell C58	Not Rated to 175°	0000000	0000000
M36	20	1,500	2	20	±0.210 mm per 300 mm	31.2	Rockwell C58	Not Rated to 175°	00000000	000000
M36	20	2,000	2	20	±0.210 mm per 300 mm	31.2	Rockwell C58	Not Rated to 175°	00000000	000000
M36	20	2,500	2	20	±0.210 mm per 300 mm	31.2	Rockwell C58	Not Rated to 175°	00000000	000000

Style A Flange Ball Nuts—Right-Hand Threaded

				Flange
Thread Size	Thread Pitch, mm	Lg., mm	Dia., mm	Wd., mm	Ht., mm	Thick., mm	No. of Thread Starts	Travel Distance per Turn, mm	No. of Mounting Holes	Hardness	Dynamic Thrust Load Cap., lbs.	Max. Backlash, mm	Includes	Temp. Range, °F		Each
Alloy Steel
M36	20	78	70	110	80	17	2	20	4	Rockwell C58	8,940	0.2	End Caps Seals	Not Rated to 175°	0000000	0000000
M36	24	94	75	115	86	18	2	24	4	Rockwell C58	10,300	0.2	End Caps Seals	Not Rated to 175°	00000000	000000
M36	36	77	66	106	76	17	4	36	4	Rockwell C58	5,030	0.2	End Caps Seals	Not Rated to 175°	00000000	000000
M36	36	77	66	106	76	17	4	36	4	Rockwell C58	9,120	0.2	End Caps Seals	Not Rated to 175°	00000000	000000

Style B Flange Ball Nuts—Right-Hand Threaded

				Flange
Thread Size	Thread Pitch, mm	Lg., mm	Dia., mm	Dia., mm	Thick., mm	No. of Thread Starts	Travel Distance per Turn, mm	No. of Mounting Holes	Bolt Circle Dia., mm	Hardness	Dynamic Thrust Load Cap., lbs.	Max. Backlash, mm	Includes	Temp. Range, °F		Each
Alloy Steel
M36	36	93	100	130	11	4	36	6	113	Rockwell C58	5,030	0.2	End Caps Seals	Not Rated to 175°	00000000	0000000

Terms and Conditions and Privacy Policy

Selecting Compatible Lead Screws and Nuts

About Nuts, Materials, and Finishes

About Threaded Studs and Rods

About Set Screws

About Socket Head Screws

Alloy Steel Socket Head Screws

Metric Alloy Steel Cup-Point Set Screws

Metric High-Strength Steel Threaded Rods—Class 10.9

Metric Very-High-Strength SteelThreaded Rods—Class 12.9

Metric Medium-Strength Steel Threaded Rods—Grade B7

Metric Fine-Thread Medium-StrengthSteel Threaded Rods—Grade B7

Medium-Strength Steel Threaded Rods—Class 8.8

Metric Fine-Thread Low-Strength Steel Threaded Rods

Metric Low-Strength Steel Threaded Rods

Metric 18-8 Stainless Steel Threaded Rods

Metric Super-Corrosion-Resistant316 Stainless Steel Threaded Rods

Metric 18-8 Stainless Steel Coupling Nuts

Eyebolts—For Lifting

Eye Nuts—For Lifting

Setup Studs

T-Slot Nuts

Metric Ball Screws and Nuts

Metric Fast-Travel Ball Screws and Nuts

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

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

Metric Super-Corrosion-Resistant
316 Stainless Steel Threaded Rods