About Shafts
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Selecting Compatible Lead Screws and Nuts
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About Carbon Steel, Alloy Steel, Spring Steel, and Cast Iron
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Low-Carbon Steel Rods and Discs
- Yield Strength: See table
- Hardness: See table
- Heat Treatable: Yes
- Max. Hardness After Heat Treatment: See table
- Specifications Met: See table
Also known as mild steel, low-carbon steel is easy to machine, form, and weld. It's widely fabricated into parts that don’t require high strength, such as fixture clamps, mounting plates, and spacers. This material can be surface hardened with heat treating.
Ground rods are decarb-free for a uniform surface that will consistently accept heat treating.
If you don't see the size you're looking for, please specify a length under additional rod lengths.
For technical drawings and 3-D models, click on a part number.
Certificates with a traceable lot number are available for these products. Download certificates from ORDER HISTORY after your order ships.
Splined Shafts for Rotary and Linear Motion
Grooves on the surface of these shafts transmit rotary power while allowing bearings to move freely along the length of the shaft. The edges are chamfered to remove sharp corners, reducing damage to bearings, housings, and other components during installation. All are turned, ground, and polished to tight diameter and straightness tolerances.
Four Splines
Shafts with four splines work with ball spline bearings, which create relatively little friction. They're commonly found in robotic and other automated systems that require complex, fast movements. They don't transmit as much torque as shafts with six splines.
All four-spline shafts are 52100 alloy steel for high strength. They're case-hardened to increase hardness and wear resistance on the surface of the shaft while allowing the center to remain soft for absorbing stresses caused by shifting loads.
Some of our four-spline shafts have a step-down end, which has been ground smooth and round like a standard shaft. Mount bearings, gears, and other round-bore components.
Step | ||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Dia., mm | Dia. Tolerance, mm | Lg., mm | Lg. Tolerance, mm | Spline Lg., mm | Dia., mm | Dia. Tolerance, mm | Lg., mm | Surface Smoothness, microinch | Edge Type | Yield Strength, psi  | Each | |
Splined End × Step-Down End | ||||||||||||
| 28 | -0.021 to 0 | 450 | -0.7874 to 0.7874 | 300 | 25 | -0.021 to 0 | 150 | 16 | Chamfered | 57,500 | 00000000 | 0000000 |
Metric Lead Screws and Nuts
Found in hand-powered clamps, vises, grates, doors, and work tables, lead screws and nuts have broad, square threads that are well suited for quick assembly, high clamping forces, and lifting and lowering heavy objects. To ensure compatibility, please select components that have the same thread direction, size, and pitch. Class 7e and 7H components are compatible.
932 bearing bronze components are more wear resistant than brass components. They have good machinability and fair 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.
Flange nuts move objects along the length of a lead screw. They have a wide machinable flange for custom mounting.