Compare over 25 types of stainless steel to find the right material for you—all with material certificates for traceability.
Tight-Tolerance Multipurpose 304 Stainless Steel
This material has tighter tolerances than standard 304 stainless steel. From cookware to chemical-processing equipment, 304 stainless steel is a good all-around choice for a wide range of applications. It maintains its corrosion resistance in temperatures up to 1500° F.
Balls have a reflective, mirror-like finish.
Steel that meets ASTM or SAE specifications complies with standards for materials.
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 C25 (Hard)
- Heat Treatable: No
Dia. | Dia. Tolerance | Fabrication | Specifications Met | Pkg. Qty. | Pkg. | |
Mirror-Like | ||||||
---|---|---|---|---|---|---|
3mm | -0.0127mm to 0.0127mm | Cold Worked | ASTM A240, ISO 3290, SAE J405 | 250 | 0000000 | 00000 |
4mm | -0.0127mm to 0.0127mm | Cold Worked | ASTM A240, ISO 3290, SAE J405 | 50 | 0000000 | 0000 |
5mm | -0.0127mm to 0.0127mm | Cold Worked | ASTM A240, ISO 3290, SAE J405 | 50 | 0000000 | 0000 |
6mm | -0.0127mm to 0.0127mm | Cold Worked | ASTM A240, ISO 3290, SAE J405 | 50 | 0000000 | 00000 |
8mm | -0.0127mm to 0.0127mm | Cold Worked | ASTM A240, ISO 3290, SAE J405 | 25 | 0000000 | 00000 |
10mm | -0.0127mm to 0.0127mm | Cold Worked | ASTM A240, ISO 3290, SAE J405 | 10 | 0000000 | 0000 |
Corrosion-Resistant 316 Stainless Steel
The addition of molybdenum gives 316 stainless steel excellent corrosion resistance. Use it in a variety of marine and chemical-processing applications. It maintains its corrosion resistance up to the maximum temperature.
Balls have a reflective, mirror-like finish.
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 C25 (Hard)
- Heat Treatment: Not Rated
- Heat Treatable: No
- Specifications Met: Not Rated
Dia. | Dia. Tolerance | Appearance | Max. Temp., °F | Pkg. Qty. | Pkg. | |
316 Stainless Steel | ||||||
---|---|---|---|---|---|---|
Metric | ||||||
2.5mm | -0.013mm to 0.013mm | Mirror-Like | 1110° | 250 | 000000000 | 00000 |
3mm | -0.013mm to 0.013mm | Mirror-Like | 1110° | 250 | 00000000 | 0000 |
3.5mm | -0.013mm to 0.013mm | Mirror-Like | 1110° | 100 | 000000000 | 0000 |
4mm | -0.013mm to 0.013mm | Mirror-Like | 1110° | 50 | 00000000 | 0000 |
5mm | -0.013mm to 0.013mm | Mirror-Like | 1110° | 50 | 000000000 | 0000 |
6mm | -0.013mm to 0.013mm | Mirror-Like | 1110° | 50 | 000000000 | 0000 |
7mm | -0.013mm to 0.013mm | Mirror-Like | 1110° | 25 | 000000000 | 0000 |
8mm | -0.013mm to 0.013mm | Mirror-Like | 1110° | 25 | 000000000 | 00000 |
10mm | -0.013mm to 0.013mm | Mirror-Like | 1110° | 10 | 000000000 | 00000 |
12mm | -0.013mm to 0.013mm | Mirror-Like | 1110° | 10 | 000000000 | 00000 |
Hardened Bearing-Quality 440C Stainless Steel

- Yield Strength: Not Rated
- Hardness: Rockwell C60 (Very Hard)
- Heat Treatment: Hardened
- Specifictions Met: See table
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 | |||||
---|---|---|---|---|---|
1mm | -0.0025mm to 0.0025mm | Magnetic | 250 | 0000000 | 000000 |
1.5mm | -0.0025mm to 0.0025mm | Magnetic | 250 | 0000000 | 00000 |
2mm | -0.0025mm to 0.0025mm | Magnetic | 250 | 0000000 | 00000 |
2.5mm | -0.0025mm to 0.0025mm | Magnetic | 250 | 0000000 | 00000 |
3mm | -0.0025mm to 0.0025mm | Magnetic | 250 | 0000000 | 00000 |
3.5mm | -0.0025mm to 0.0025mm | Magnetic | 100 | 0000000 | 0000 |
4mm | -0.0025mm to 0.0025mm | Magnetic | 50 | 0000000 | 0000 |
5mm | -0.0025mm to 0.0025mm | Magnetic | 50 | 0000000 | 00000 |
6mm | -0.0025mm to 0.0025mm | Magnetic | 50 | 0000000 | 00000 |
7mm | -0.0025mm to 0.0025mm | Magnetic | 25 | 0000000 | 0000 |
8mm | -0.0025mm to 0.0025mm | Magnetic | 25 | 0000000 | 00000 |
10mm | -0.0025mm to 0.0025mm | Magnetic | 10 | 0000000 | 00000 |
12mm | -0.0025mm to 0.0025mm | Magnetic | 10 | 0000000 | 00000 |
13mm | -0.0025mm to 0.0025mm | Magnetic | 5 | 0000000 | 0000 |
14mm | -0.0025mm to 0.0025mm | Magnetic | 5 | 0000000 | 00000 |
15mm | -0.0025mm to 0.0025mm | Magnetic | 5 | 0000000 | 00000 |
16mm | -0.0025mm to 0.0025mm | Magnetic | 3 | 0000000 | 00000 |
18mm | -0.0025mm to 0.0025mm | Magnetic | 3 | 0000000 | 00000 |