About Threaded Studs and Rods
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Selecting Compatible Lead Screws and Nuts
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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.
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.
| Lg. | Thread Pitch, mm | Tensile Strength, psi  | Hardness | Specifications Met | Pkg. Qty. | Pkg. | |
18-8 Stainless Steel | |||||||
|---|---|---|---|---|---|---|---|
M2 | |||||||
| 12 mm | 0.4 | 70,000 | Not Rated | DIN 976 | 10 | 000000000 | 000000 |
| 16 mm | 0.4 | 70,000 | Not Rated | DIN 976 | 10 | 000000000 | 00000 |
| 20 mm | 0.4 | 70,000 | Not Rated | DIN 976 | 10 | 000000000 | 00000 |
| 25 mm | 0.4 | 70,000 | Not Rated | DIN 976 | 10 | 000000000 | 00000 |
| 50 mm | 0.4 | 70,000 | Not Rated | DIN 976 | 10 | 000000000 | 00000 |
| 300 mm | 0.4 | 70,000 | Not Rated | DIN 976 | 1 | 000000000 | 0000 |
| 500 mm | 0.4 | 70,000 | Not Rated | DIN 976 | 1 | 000000000 | 0000 |
| 1 m | 0.4 | 70,000 | Not Rated | DIN 976 | 1 | 000000000 | 00000 |
| 2 m | 0.4 | 70,000 | Not Rated | DIN 976 | 1 | 000000000 | 00000 |
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. All meet DIN 976 specifications for dimensional standards.
For technical drawings and 3-D models, click on a part number.
| Lg. | Thread Pitch, mm | Tensile Strength, psi | Hardness | Specifications Met | Pkg. Qty. | Pkg. | |
316 Stainless Steel | |||||||
|---|---|---|---|---|---|---|---|
M2 | |||||||
| 12 mm | 0.4 | 70,000 | Not Rated | DIN 976 | 5 | 000000000 | 000000 |
| 25 mm | 0.4 | 70,000 | Not Rated | DIN 976 | 5 | 000000000 | 0000 |
| 300 mm | 0.4 | 70,000 | Not Rated | DIN 976 | 1 | 000000000 | 0000 |
| 500 mm | 0.4 | 70,000 | Not Rated | DIN 976 | 1 | 000000000 | 0000 |
| 1 m | 0.4 | 70,000 | Not Rated | DIN 976 | 1 | 000000000 | 00000 |
| 2 m | 0.4 | 70,000 | Not Rated | DIN 976 | 1 | 000000000 | 00000 |
Metric Brass Threaded Rods
These brass threaded rods are corrosion resistant in wet environments, electrically conductive, and nonmagnetic.
For technical drawings and 3-D models, click on a part number.
| Lg., m | Thread Pitch, mm | Tensile Strength, psi | Hardness | Specifications Met | Each | |
Brass | ||||||
|---|---|---|---|---|---|---|
M2 | ||||||
| 1 | 0.4 | 50,000 | Rockwell B55 | DIN 976 | 000000000 | 000000 |
Metric Fast-Travel Ultra-Precision Lead Screws and Nuts
Multiple thread channels (also known as thread starts) create faster linear travel than lead screws with a single thread start. Operating with less backlash (play) than Metric Precision Acme Lead Screws and Nuts, these lead screws and nuts provide increased nut life and more reliable movement in automated systems. To ensure compatibility, select components that have the same thread size, thread pitch, and number of thread starts.
Lead screws with one machinable end let you create your own custom connection to suit your application.
Lead screws with one coupling end connect directly with your shaft without extra machining. Torque down the locknut once inserted. 303 and 304 stainless steel lead screws have good corrosion resistance.
Flange nuts with a wear-compensating internal O-ring resist backlash to keep the nuts in place and maintain a tight fit even when their threads begin to wear. They’re often used in 3D printing and robotic applications.
Acetal nuts have good wear and corrosion resistance.
Travel distance per turn, also known as screw lead, is the distance a nut moves with one revolution of the lead screw.
For technical drawings and 3-D models, click on a part number.
| Thread Size | Thread Pitch, mm | Lg., mm | No. of Thread Starts | Thread Type | Speed Ratio | Travel Distance per Turn, mm | Accuracy for Travel Distance per Turn | Hardness | Tensile Strength, psi | Each | |
303 Stainless Steel | |||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|
| M2 | 0.5 | 50 | 2 | Metric Rounded Trapezoidal | 2:1 | 1 | ±0.089 mm per 300 mm | Brinell 160 | 90,000 | 000000000 | 000000 |
| M2 | 0.5 | 100 | 2 | Metric Rounded Trapezoidal | 2:1 | 1 | ±0.089 mm per 300 mm | Brinell 160 | 90,000 | 000000000 | 00000 |
17-4 PH Stainless Steel | |||||||||||
| M2 | 0.4 | 150 | 2 | Metric Rounded Trapezoidal | 2:1 | 0.75 | ±0.15 mm per 300 mm | Rockwell C35 | 145,000 | 00000000 | 000000 |
| M2 | 0.4 | 150 | 4 | Metric Rounded Trapezoidal | 4:1 | 1.5 | ±0.15 mm per 300 mm | Rockwell C35 | 145,000 | 00000000 | 000000 |
| M2 | 0.4 | 150 | 8 | Metric Rounded Trapezoidal | 8:1 | 3 | ±0.15 mm per 300 mm | Rockwell C35 | 145,000 | 00000000 | 000000 |
Machinable End | |||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Thread Size | Thread Pitch, mm | Lg., mm | No. of Thread Starts | Thread Type | Dia., mm | Lg., mm | Speed Ratio | Travel Distance per Turn, mm | Accuracy for Travel Distance per Turn | Hardness | Tensile Strength, psi | Each | |
17-4 PH Stainless Steel | |||||||||||||
| M2 | 0.4 | 150 | 2 | Metric Rounded Trapezoidal | 7 | 25 | 2:1 | 0.75 | ±0.15 mm per 300 mm | Rockwell C35 | 145,000 | 00000000 | 0000000 |
| M2 | 0.4 | 150 | 4 | Metric Rounded Trapezoidal | 7 | 25 | 4:1 | 1.5 | ±0.15 mm per 300 mm | Rockwell C35 | 145,000 | 00000000 | 000000 |
| M2 | 0.4 | 150 | 8 | Metric Rounded Trapezoidal | 7 | 25 | 8:1 | 3 | ±0.15 mm per 300 mm | Rockwell C35 | 145,000 | 00000000 | 000000 |
Compression End | ||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Thread Size | Thread Pitch, mm | Lg., mm | No. of Thread Starts | Thread Type | Dia., mm | Lg., mm | For Shaft Dia., mm | Speed Ratio | Travel Distance per Turn, mm | Accuracy for Travel Distance per Turn | Hardness | Tensile Strength, psi | Each | |
17-4 PH Stainless Steel | ||||||||||||||
| M2 | 0.4 | 150 | 2 | Metric Rounded Trapezoidal | 6.5 | 15 | 2 | 2:1 | 0.75 | ±0.15 mm per 300 mm | Rockwell C35 | 145,000 | 00000000 | 0000000 |
| M2 | 0.4 | 150 | 4 | Metric Rounded Trapezoidal | 6.5 | 15 | 2 | 4:1 | 1.5 | ±0.15 mm per 300 mm | Rockwell C35 | 145,000 | 00000000 | 000000 |
| M2 | 0.4 | 150 | 8 | Metric Rounded Trapezoidal | 6.5 | 15 | 2 | 8:1 | 3 | ±0.15 mm per 300 mm | Rockwell C35 | 145,000 | 00000000 | 000000 |
External Thread | ||||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Thread Size | Thread Pitch, mm | Lg. | Wd. | Ht. | Dia. | Hex Wd. | No. of Thread Starts | Thread Type | Speed Ratio | Travel Distance per Turn, mm | Size | Lg. | Dynamic Thrust Load Cap., lbs. | Each | ||
Acetal Plastic | ||||||||||||||||
| B | M2 | 0.5 | 11/16" | __ | __ | 0.297" | 7/16" | 2 | Metric Rounded Trapezoidal | 2:1 | 1 | 3/8"-24 | 3/16" | 10 | 000000000 | 000000 |
PEEK Plastic | ||||||||||||||||
| C | M2 | 0.4 | 5/16" | 0.22" | 0.197" | __ | __ | 2 | Metric Rounded Trapezoidal | 2:1 | 0.75 | M5 | 9/64" | 2 | 00000000 | 00000 |
| C | M2 | 0.4 | 5/16" | 0.22" | 0.197" | __ | __ | 4 | Metric Rounded Trapezoidal | 4:1 | 1.5 | M5 | 9/64" | 2 | 00000000 | 00000 |
| C | M2 | 0.4 | 5/16" | 0.22" | 0.197" | __ | __ | 8 | Metric Rounded Trapezoidal | 8:1 | 3 | M5 | 9/64" | 2 | 00000000 | 00000 |
Flange | |||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Thread Size | Thread Pitch, mm | Lg. | Dia. | Wd. | Ht. | Thick. | No. of Thread Starts | Thread Type | Speed Ratio | Travel Distance per Turn, mm | Bolt Circle Dia. | Dynamic Thrust Load Cap., lbs. | Each | ||
Acetal Plastic | |||||||||||||||
| D | M2 | 0.5 | 1/2" | 0.297" | 3/4" | 13/32" | 1/8" | 2 | Metric Rounded Trapezoidal | 2:1 | 1 | 39/64" | 10 | 000000000 | 000000 |
PEEK Plastic | |||||||||||||||
| D | M2 | 0.4 | 9/32" | 0.209" | 15/32" | 15/64" | 5/64" | 2 | Metric Rounded Trapezoidal | 2:1 | 0.75 | 11/32" | 2 | 00000000 | 00000 |
| D | M2 | 0.4 | 9/32" | 0.209" | 15/32" | 15/64" | 5/64" | 4 | Metric Rounded Trapezoidal | 4:1 | 1.5 | 11/32" | 2 | 00000000 | 00000 |
| D | M2 | 0.4 | 9/32" | 0.209" | 15/32" | 15/64" | 5/64" | 8 | Metric Rounded Trapezoidal | 8:1 | 3 | 11/32" | 2 | 00000000 | 00000 |
PEEK Plastic with Wear-Compensating Internal O-Ring | |||||||||||||||
| D | M2 | 0.4 | 5/16" | 0.228" | 15/32" | 15/64" | 5/64" | 2 | Metric Rounded Trapezoidal | 2:1 | 0.75 | 11/32" | 1 | 00000000 | 00000 |
| D | M2 | 0.4 | 5/16" | 0.228" | 15/32" | 15/64" | 5/64" | 4 | Metric Rounded Trapezoidal | 4:1 | 1.5 | 11/32" | 1 | 00000000 | 00000 |
| D | M2 | 0.4 | 5/16" | 0.228" | 15/32" | 15/64" | 5/64" | 8 | Metric Rounded Trapezoidal | 8:1 | 3 | 11/32" | 1 | 00000000 | 00000 |
Metric Ultra-Precision Lead Screws and Nuts
Operating with less backlash (play) than Metric Precision Acme Lead Screws and Nuts, these provide increased nut life and more reliable movement in automated systems. Also known as single-start and self-locking lead screws and nuts, they have a single thread that runs the length of the screw. The nut travels only when the screw turns, so your system won't unexpectedly move when the lead screw is at rest. To ensure compatibility, select components that have the same thread size, thread type, thread size, thread pitch, and number of thread starts.
Lead screws with one machinable end let you create your own custom connection to suit your application.
Lead screws with one coupling end connect directly with your shaft without extra machining. Torque down the locknut once inserted. 303 stainless steel lead screws have good corrosion resistance.
Flange nuts with wear-compensating internal O-ring maintain a tight fit even when their threads begin to wear. They resist backlash to maintain accuracy over time, which is important in positioning applications such as 3D printing and robotics.
Acetal nuts have good wear and corrosion resistance.
Travel distance per turn, also known as screw lead, is the distance a nut moves with one revolution of the lead screw.
For technical drawings and 3-D models, click on a part number.
| Thread Size | Thread Pitch, mm | Lg., mm | No. of Thread Starts | Thread Type | Speed Ratio | Travel Distance per Turn, mm | Accuracy for Travel Distance per Turn | Hardness | Tensile Strength, psi | Each | |
303 Stainless Steel | |||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|
| M2 | 0.5 | 50 | 1 | Metric Rounded Trapezoidal | 1:1 | 0.5 | ±0.089 mm per 300 mm | Brinell 160 | 90,000 | 0000000 | 000000 |
| M2 | 0.5 | 100 | 1 | Metric Rounded Trapezoidal | 1:1 | 0.5 | ±0.089 mm per 300 mm | Brinell 160 | 90,000 | 0000000 | 00000 |
17-4 PH Stainless Steel | |||||||||||
| M2 | 0.4 | 150 | 1 | Metric Rounded Trapezoidal | 1:1 | 0.375 | ±0.15 mm per 300 mm | Rockwell C35 | 145,000 | 000000000 | 000000 |
Machinable End | |||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Thread Size | Thread Pitch, mm | Lg., mm | No. of Thread Starts | Thread Type | Dia., mm | Lg., mm | Speed Ratio | Travel Distance per Turn | Accuracy for Travel Distance per Turn | Hardness | Tensile Strength, psi | Each | |
17-4 PH Stainless Steel | |||||||||||||
| M2 | 0.4 | 150 | 1 | Metric Rounded Trapezoidal | 7 | 25 | 1:1 | 0.375mm | ±0.15 mm per 300 mm | Rockwell C35 | 145,000 | 000000000 | 0000000 |
Coupling End | ||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Thread Size | Thread Pitch, mm | Lg., mm | No. of Thread Starts | Thread Type | Dia., mm | Lg., mm | For Shaft Dia., mm | Speed Ratio | Travel Distance per Turn | Accuracy for Travel Distance per Turn | Hardness | Tensile Strength, psi | Each | |
17-4 PH Stainless Steel | ||||||||||||||
| M2 | 0.4 | 150 | 1 | Metric Rounded Trapezoidal | 6.5 | 15 | 2 | 1:1 | 0.375mm | ±0.15 mm per 300 mm | Rockwell C35 | 145,000 | 000000000 | 0000000 |
External Thread | |||||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Thread Size | Thread Pitch, mm | Lg. | Wd. | Ht. | Dia. | Hex Wd. | No. of Thread Starts | Thread Type | Speed Ratio | Travel Distance per Turn, mm | Size | Pitch | Lg. | Dynamic Thrust Load Cap., lbs. | Each | ||
Acetal Plastic | |||||||||||||||||
| A | M2 | 0.5 | 11/16" | __ | __ | 0.297" | 7/16" | 1 | Metric Rounded Trapezoidal | 1:1 | 0.5 | 3/8"-24 | __ | 3/16" | 10 | 0000000 | 000000 |
PEEK Plastic | |||||||||||||||||
| B | M2 | 0.4 | 5/16" | 0.22" | 0.197" | __ | __ | 1 | Metric Rounded Trapezoidal | 1:1 | 0.375 | M5 | 0.8mm | 9/64" | 2 | 000000000 | 00000 |
Flange | |||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Thread Size | Thread Pitch, mm | Lg. | Dia. | Wd. | Ht. | Thick. | No. of Thread Starts | Thread Type | Speed Ratio | Travel Distance per Turn, mm | Bolt Circle Dia. | Dynamic Thrust Load Cap., lbs. | Each | ||
Acetal Plastic | |||||||||||||||
| C | M2 | 0.5 | 1/2" | 0.297" | 3/4" | 13/32" | 1/8" | 1 | Metric Rounded Trapezoidal | 1:1 | 0.5 | 39/64" | 10 | 0000000 | 000000 |
PEEK Plastic | |||||||||||||||
| C | M2 | 0.4 | 9/32" | 0.209" | 15/32" | 15/64" | 5/64" | 1 | Metric Rounded Trapezoidal | 1:1 | 0.375 | 11/32" | 2 | 000000000 | 00000 |
PEEK Plastic with Wear-Compensating Internal O-Ring | |||||||||||||||
| C | M2 | 0.4 | 5/16" | 0.228" | 15/32" | 15/64" | 5/64" | 1 | Metric Rounded Trapezoidal | 1:1 | 0.375 | 11/32" | 1 | 000000000 | 00000 |