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About Stainless Steel
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About Tool Steel
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About Carbon Steel, Alloy Steel, Spring Steel, and Cast Iron
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Hardened Bearing-Quality 440C Stainless Steel

- Yield Strength: Not Rated
- Hardness: Rockwell C60 (Very Hard)
- Heat Treatment: Hardened
- Specifications Met: SAE AMS5630
These balls are hardened for increased wear and abrasion resistance. 440C is one of the hardest types of stainless steel after heat treating. It's often used for bearings and valves. This material maintains its corrosion resistance in temperatures up to 800° F.
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.
Dia. | Dia. Tolerance | Magnetic Properties | Pkg. Qty. | Pkg. | |
Mirror-Like | |||||
---|---|---|---|---|---|
15/16" | -0.0005" to 0.0005" | Magnetic | 1 | 0000000 | 00000 |
Tight-Tolerance Hardened 440C Stainless Steel
With a diameter that’s held to a close tolerance, this material is hardened for increased wear and abrasion resistance. 440C is one of the hardest types of stainless steel after heat treating. This material maintains its corrosion resistance in temperatures up to 800° F.
Balls have a reflective, mirror-like appearance.
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.

- Yield Strength: Not Rated
- Hardness: Rockwell C60 (Very Hard)
- Heat Treatment: Hardened
- Specifications Met: SAE AMS5630
Dia. | Dia. Tolerance | Magnetic Properties | Pkg. Qty. | Pkg. | |
Mirror-Like | |||||
---|---|---|---|---|---|
15/16" | -0.0001" to 0.0001" | Magnetic | 1 | 0000000 | 000000 |
Hard Wear-Resistant 52100 Alloy Steel Balls

- Yield Strength: 295,000 psi
- Hardness: Rockwell C60 (Very Hard)
- Specifications Met: See table
Also known as chrome steel, 52100 is an extremely hard and wear-resistant material. These balls are often used in bearings.
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.
Dia. | Dia. Tolerance | Heat Treatment | Pkg. Qty. | Pkg. | |
Mirror-Like | |||||
---|---|---|---|---|---|
15/16" | -0.0001" to 0.0001" | Hardened | 10 | 0000000 | 000000 |
Ultra-Hard C2 Tungsten Carbide Balls

- Yield Strength: Not Rated
- Hardness: Rockwell C75 (Very Hard)
- Temper Rating: Not Rated
Tungsten carbide, sometimes called carbide, is harder than Corrosion-Resistant Tungsten with excellent wear resistance. Use it to machine long-lasting tools, such as end mills and inserts.
For technical drawings and 3-D models, click on a part number.
Dia. | Dia. Tolerance | Mechanical Finish | Pkg. Qty. | Pkg. | |
15/16" | -0.0001" to 0.0001" | Polished | 1 | 0000000 | 0000000 |
Hardened Shock-Resistant S2 Tool Steel

- Yield Strength: 290,000 psi
- Hardness: Rockwell C55 (Very Hard)
- Specifications Met: ASTM A681
This S2 tool steel has been hardened for excellent strength and impact resistance. It has a tough core that resists breaking under shock loads.
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.
Dia. | Dia. Tolerance | Mechanical Finish | Pkg. Qty. | Pkg. | |
Mirror-Like | |||||
---|---|---|---|---|---|
15/16" | -0.001" to 0.001" | Ground and Polished | 10 | 0000000 | 000000 |
Wear-Resistant Easy-to-Machine Delrin® Acetal Resin Balls

- Color: White
- Temperature Range: -20° to 180° F
- Tensile Strength: 10,000-11,000 psi (Good)
- Impact Strength: 1-1.5 ft.-lbs./in. (Poor)
- Hardness: Rockwell R120-R122 (Hard)
- For Use Outdoors: No
- Specifications Met: FDA Compliant 21 CFR 177.2480
Able to hold tight tolerances, these balls resist expanding when exposed to heat and moisture. They have a naturally slippery, wear-resistant surface. Use them for bearings and low-load rolling applications. Delrin® acetal resin is also known as acetal homopolymer.
For technical drawings and 3-D models, click on a part number.
Dia. | Dia. Tolerance | Pkg. Qty. | Pkg. | |
Inch | ||||
---|---|---|---|---|
15/16" | -0.001" to 0.001" | 1 | 0000000 | 00000 |
Stud-Mount Ball Transfers

Steel balls are durable. Nylon balls are nonmarking.
Ball transfers with an angled working orientation can be used to form stock stands.
For technical drawings and 3-D models, click on a part number.
Ball Dia. | Cap., lbs. | Ht. | Dia. | Working Orientation | Thread Size | Stud Lg. | Temperature Range, °F | Each | ||
Steel Ball | ||||||||||
---|---|---|---|---|---|---|---|---|---|---|
Zinc-Plated Steel Housing | ||||||||||
A | 5/8" | 125 | 13/16" | 15/16" | Ball Up, Ball Down, Angle | 1/4"-20 | 3/4" | __ | 0000000 | 00000 |
Nylon Plastic Ball | ||||||||||
Zinc-Plated Steel Housing | ||||||||||
A | 5/8" | 125 | 13/16" | 15/16" | Ball Up, Ball Down, Angle | 1/4"-20 | 3/4" | 32° to 212° | 0000000 | 00000 |
Press-Fit Ball Transfers

Drop-in design makes for easy installation.
Steel balls are durable. Ball transfers with an angled working orientation can be used to form stock stands.
For technical drawings and 3-D models, click on a part number.
Ball Dia. | Cap., lbs. | Ht. | Dp. | Dia. | Working Orientation | Flange Dia. | Each | ||
Steel Ball | |||||||||
---|---|---|---|---|---|---|---|---|---|
Zinc-Plated Steel Housing | |||||||||
B | 5/8" | 65 | 3/8" | 7/16" | 15/16" | Ball Up, Ball Down, Angle | 1 7/32" | 0000000 | 000000 |
Heavy Duty Recessed Flange-Mount Ball Transfers

These ball transfers recess into the mounting surface for a low profile.
Steel balls are durable. Ball transfers with an angled working orientation can be used to form stock stands.
For technical drawings and 3-D models, click on a part number.
Flange | Mounting Hole | ||||||||||||
---|---|---|---|---|---|---|---|---|---|---|---|---|---|
Style | Ball Dia. | Cap., lbs. | Ht. | Dp. | Dia. | Working Orientation | Lg. | Wd. | No.of Mounting Holes | Dia. | Ctr.-to-Ctr. | Each | |
Steel Ball with Top Flange | |||||||||||||
Black-Oxide Steel Housing | |||||||||||||
A | 1/2" | 120 | 5/16" | 5/8" | 15/16" | Ball Up; Ball Down; Angle | 1 7/8" | 1 1/4" | 2 | 5/32" | 1 3/8" | 0000000 | 000000 |