About Magnets
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About Threaded Studs and Rods
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About Nuts, Materials, and Finishes
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Selecting Compatible Lead Screws and Nuts
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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, they 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 direction and size. 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.


Root diameter indicates the diameter the ball screw will be after machining away the threads.
Thread Size | Lg. | No. of Thread Starts | Travel Distance per Turn | Accuracy for Travel Distance per Turn | Root Dia. | Hardness | Tensile Strength, psi | Temp. Range, °F | Each | |
Carbon Steel | ||||||||||
---|---|---|---|---|---|---|---|---|---|---|
M14 | 500 mm | 1 | 4mm | ±0.210 mm per 300 mm | 11.5mm | Rockwell C58 | 21,000 | 5° to 175° | 0000000 | 000000 |
M14 | 1,000 mm | 1 | 4mm | ±0.210 mm per 300 mm | 11.5mm | Rockwell C58 | 21,000 | 5° to 175° | 0000000 | 000000 |

Thread Size | 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 | Temp. Range, °F | Each | |
Alloy Steel | ||||||||||||
---|---|---|---|---|---|---|---|---|---|---|---|---|
M14 | 35 | 34 | 30 | 13 | 1 | 4 | Rockwell C58 | 1,200 | 0.1 | 5° to 175° | 0000000 | 0000000 |

Flange | |||||||||||||
---|---|---|---|---|---|---|---|---|---|---|---|---|---|
Thread Size | Lg. | Dia. | Wd. | Ht. | Thick. | No. of Thread Starts | Travel Distance per Turn | Hardness | Dynamic Thrust Load Cap., lbs. | Max. Backlash | Each | ||
Alloy Steel | |||||||||||||
C | M14 | 40mm | 31mm | 50mm | 37mm | 10mm | 1 | 4mm | Rockwell C58 | 1,200 | 0.1mm | 0000000 | 0000000 |
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.
Lg. | Thread Pitch, mm | Tensile Strength, psi | Hardness | Specifications Met | Each | |
Steel | ||||||
---|---|---|---|---|---|---|
M14 | ||||||
50 mm | 2 | 150,000 | Rockwell C32 | DIN 976 | 0000000 | 000000 |
100 mm | 2 | 150,000 | Rockwell C32 | DIN 976 | 0000000 | 00000 |
150 mm | 2 | 150,000 | Rockwell C32 | DIN 976 | 0000000 | 00000 |
200 mm | 2 | 150,000 | Rockwell C32 | DIN 976 | 0000000 | 00000 |
300 mm | 2 | 150,000 | Rockwell C32 | DIN 976 | 0000000 | 00000 |
500 mm | 2 | 150,000 | Rockwell C32 | DIN 976 | 0000000 | 00000 |
1 m | 2 | 150,000 | Rockwell C32 | DIN 976 | 0000000 | 00000 |
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.
Lg. | Thread Pitch, mm | Tensile Strength, psi | Hardness | Specifications Met | Each | |
Steel | ||||||
---|---|---|---|---|---|---|
M14 | ||||||
50 mm | 2 | 170,000 | Rockwell C39 | DIN 976 | 00000000 | 000000 |
100 mm | 2 | 170,000 | Rockwell C39 | DIN 976 | 0000000 | 00000 |
150 mm | 2 | 170,000 | Rockwell C39 | DIN 976 | 0000000 | 00000 |
200 mm | 2 | 170,000 | Rockwell C39 | DIN 976 | 00000000 | 00000 |
300 mm | 2 | 170,000 | Rockwell C39 | DIN 976 | 00000000 | 00000 |
500 mm | 2 | 170,000 | Rockwell C39 | DIN 976 | 0000000 | 00000 |
1 m | 2 | 170,000 | Rockwell C39 | DIN 976 | 00000000 | 000000 |
Metric Medium-Strength Steel Threaded Rods—Grade B7

Made of Grade B7 steel, the tensile strength of these threaded rods is one and a half times higher than low-strength steel threaded rods. They also meet the pressure and temperature requirements of ASTM A193 and are often used to secure pressure tanks, valves, and flanges.
Zinc yellow-chromate plated steel threaded rods resist corrosion in wet environments.
For technical drawings and 3-D models, click on a part number.
Lg. | Thread Pitch, mm | Tensile Strength, psi | Hardness | Specifications Met | Each | |
Steel | ||||||
---|---|---|---|---|---|---|
M14 | ||||||
50 mm | 2 | 125,000 | Rockwell C35 | ASTM A193, DIN 976 | 000000000 | 00000 |
100 mm | 2 | 125,000 | Rockwell C35 | ASTM A193, DIN 976 | 000000000 | 0000 |
300 mm | 2 | 125,000 | Rockwell C35 | ASTM A193, DIN 976 | 000000000 | 00000 |
500 mm | 2 | 125,000 | Rockwell C35 | ASTM A193, DIN 976 | 000000000 | 00000 |
1 m | 2 | 125,000 | Rockwell C35 | ASTM A193, DIN 976 | 000000000 | 00000 |
2 m | 2 | 125,000 | Rockwell C35 | ASTM A193, DIN 976 | 000000000 | 00000 |
Zinc Yellow-Chromate Plated Steel | ||||||
M14 | ||||||
1 m | 2 | 125,000 | Rockwell C35 | ASTM A193, DIN 976 | 000000000 | 00000 |
2 m | 2 | 125,000 | Rockwell C35 | ASTM A193, DIN 976 | 000000000 | 00000 |
Black-Oxide Steel | ||||||
M14 | ||||||
1 m | 2 | 125,000 | Rockwell C35 | ASTM A193, DIN 976 | 000000000 | 00000 |
Metric Fine-Thread Medium-Strength Steel Threaded Rods—Grade B7

The tensile strength of these metric Grade B7 rods is about one and a half times higher than low-strength steel rods. Often used to secure pressure tanks, valves, and flanges, these rods meet the pressure and temperature requirements of ASTM A193.
For technical drawings and 3-D models, click on a part number.
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.
Lg. | Thread Pitch, mm | Tensile Strength, psi | Hardness | Specifications Met | Each | |
Zinc-Plated Steel | ||||||
---|---|---|---|---|---|---|
M14 | ||||||
1 m | 2 | 110,000 | Rockwell C20 | DIN 975 | 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.
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.
Metric Left-Hand Threaded Low-Strength Steel Threaded Rods

These threaded rods tighten when turned to the left; once fastened, they resist loosening from counterclockwise motion. About half the strength of medium-strength steel threaded rods, use them for light duty hanging, mounting, and fastening.
For technical drawings and 3-D models, click on a part number.
Lg. | Thread Pitch, mm | Tensile Strength, psi | Hardness | Specifications Met | Each | |
Steel | ||||||
---|---|---|---|---|---|---|
M14 | ||||||
1 m | 2 | 50,000 | Rockwell B49 | DIN 976 | 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.
Lg. | Thread Pitch, mm | Tensile Strength, psi | Hardness | Specifications Met | Pkg. Qty. | Pkg. | |
18-8 Stainless Steel | |||||||
---|---|---|---|---|---|---|---|
M14 | |||||||
50 mm | 2 | 70,000 | Not Rated | DIN 976 | 5 | 000000000 | 000000 |
100 mm | 2 | 70,000 | Not Rated | DIN 976 | 1 | 000000000 | 0000 |
300 mm | 2 | 70,000 | Not Rated | DIN 976 | 1 | 000000000 | 00000 |
1 m | 2 | 70,000 | Not Rated | DIN 976 | 1 | 000000000 | 00000 |
2 m | 2 | 70,000 | Not Rated | DIN 976 | 1 | 000000000 | 00000 |
Metric Threaded on Both Ends Studs

Also known as setup studs, these studs withstand sideways forces better than fully threaded studs because they have an unthreaded middle that is stronger than the treaded ends. The unthreaded middle also makes more contact with unthreaded holes, which creates better alignment than a fully threaded stud.
18-8 stainless steel studs resist chemicals and rusting in wet environments. They may be mildly magnetic.
For technical drawings and 3-D models, click on a part number.
Metric Low-Strength Steel Coupling Nuts

Often referred to as extension nuts, use these to connect and extend threaded rods. They're about half the strength of medium-strength steel coupling nuts for use in light duty fastening applications.
Zinc-plated steel coupling nuts resist corrosion in wet environments.
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 | |
Zinc-Plated Steel | |||||||
M14 | 2 | 42 | 22 | DIN 6334 | 000000000 | 00000 | 00000 |
Metric Medium-Strength Steel Coupling Nuts—Class 8

Often referred to as extension nuts, use these to connect and extend threaded rods. They're comparable in strength to Class 8.8 bolts.
Zinc-plated steel coupling nuts resist corrosion in wet environments.
Black-oxide steel coupling nuts have a dark surface color and are mildly corrosion resistant in dry environments.
For technical drawings and 3-D models, click on a part number.
Metric 18-8 Stainless Steel Coupling Nuts


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.
Coupling nuts with a black-oxide finish have a dark surface color.
For technical drawings and 3-D models, click on a part number.
Metric Super-Corrosion-Resistant 316 Stainless Steel Coupling Nuts

Made from 316 stainless steel, these coupling nuts have excellent resistance to chemicals and salt water. Also known as extension nuts, use them to connect and extend threaded rods. They may be mildly magnetic.
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 | |
316 Stainless Steel | |||||||
M14 | 2 | 42 | 22 | DIN 6334 | 000000000 | 000000 | 000000 |
Round Coupling Nuts

With a smooth rounded body for a finished look, use these nuts to connect and extend threaded rods.
18-8 stainless steel coupling nuts have good chemical resistance.
For technical drawings and 3-D models, click on a part number.
Connecting Rods

Designed for use with right-hand threaded rod ends, these rods have right-hand threads on both ends. Use them for remote valve operators, throttle controllers, shifting mechanisms, and virtually any push/pull assembly.
Carbon steel rods without a plating are best for dry environments, since moisture will cause them to rust.
Aluminum rods are lightweight and corrosion resistant in wet environments.
18-8 stainless steel rods have good chemical resistance.
For technical drawings and 3-D models, click on a part number.
Turnbuckle-Style Connecting Rods


Similar to turnbuckles, these rods have right-hand threads on one end and left-hand threads on the other so you can make a linkage that adjusts for tension. Add right- and left-hand threaded rod ends to build your linkages. Rods have a hex-shaped body so you can adjust them with a wrench.
Carbon steel rods handle higher loads than aluminum and 18-8 stainless steel rods.
18-8 stainless steel rods are corrosion resistant and stand up to chemicals.
Note: The end with the left-hand threads is marked with a groove.
For technical drawings and 3-D models, click on a part number.
Internally Threaded Turnbuckle-Style Connecting Rods


Similar to turnbuckles, these rods have right-hand threads on one end and left-hand threads on the other so you can make a linkage that adjusts for tension. Add right- and left-hand threaded rod ends to build your linkages. Rods have a hex-shaped body so you can adjust them with a wrench.
Carbon steel rods generally handle higher loads than aluminum and stainless steel rods.
18-8 stainless steel rods have good corrosion and chemical resistance
Note: The end with the left-hand threads is marked with a groove.
For technical drawings and 3-D models, click on a part number.
Encased Ceramic Magnets with Threaded Hole

These ceramic magnets resist demagnetization better than other magnets, and have a metal case to protect the magnetic material. They resist temperatures up to 175° or 245° F.
Magnets with a steel case have a more concentrated and focused magnetic field than magnets with an aluminum case.
Warning: Maximum pull ratings are based on direct contact with rust-free and unpainted iron plate. Variations in material condition will significantly reduce these ratings. Do not use for lifting over people.
For technical drawings and 3-D models, click on a part number.
Thick. | OD | Post Lg., mm | Overall Lg., mm | Max. Pull, lbs. | Sets of Poles | Max. Temperature, °F | Magnet Grade | Thread Size | Thread Pitch, mm | Thread Dp. | Each | ||
Zinc-Plated Steel Case | |||||||||||||
---|---|---|---|---|---|---|---|---|---|---|---|---|---|
1 | 26mm | 125mm | 24 | 50 | 286 | 1 | 245° | C5 | M14 | 2 | 24mm | 0000000 | 0000000 |
Eyelet End Fittings for Gas Springs


Thread these eyelet end fittings onto gas springs. They require an eyelet mounting bracket (sold separately) or a pin (not included) to mount the gas spring.
Select end fittings with a thread size that matches the rod and end thread sizes of your gas spring. The fittings will increase your gas spring's extended and compressed lengths, so add the Length 1 value for each fitting you attach.
For technical drawings and 3-D models, click on a part number.
Thread Size | Thread Pitch, mm | ID | Lg. 1 | Lg. 2 | Thick. | Material | Gender | Each | |
M14 | 1.5 | 0.55" | 1.65" | 0.49" | 0.55" | Zinc-Plated Steel | Female | 00000000 | 000000 |