System of Measurement System of Measurement |
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Diameter Diameter | Show |
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Diameter Diameter | Hide |
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Shape Shape |
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Hardness Hardness |
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For Joining For Joining |
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RWMA Shank Taper Number RWMA Shank Taper Number |
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REACH (Registration, Evaluation, Authorization and Restriction of Chemicals) REACH (Registration,Evaluation, Authorization and Restriction of Chemicals) |
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RoHS (Restriction of Hazardous Substances) RoHS (Restriction ofHazardous Substances) |
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Specifications Met Specifications Met |
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Fabrication Fabrication |
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Welding Process Welding Process |
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Tolerance Rating Tolerance Rating |
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Maximum Temperature Maximum Temperature |
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Minimum Temperature Minimum Temperature |
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Appearance Appearance |
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Certificate Certificate |
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Yield Strength Yield Strength |
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About Tool Steel
More
Hardened High-Speed M42 Tool Steel

- Yield Strength: Not Rated
- Hardness: Rockwell C65 (Very Hard)
Also known as cobalt steel, this M42 tool steel maintains its hardness in high-speed cutting applications that generate intense heat. Use it to make tools for cutting extremely hard 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.
Dia. | Dia. Tolerance | Lg. | Mechanical Finish | Each | |
31/64" | -0.0002" to 0" | 5 7/8" | Precision Ground | 0000000 | 000000 |
Tight-Tolerance Multipurpose Air-Hardening A2 Tool Steel Rods

Precision ground and held to a strict straightness tolerance, these rods are ready for turning in your lathe. They’re also known as drill rod. A2 tool steel is more wear resistant than O1 and it keeps a sharper cutting edge. This air-hardening material is widely used for punches, broaches, and dies.
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: See Table
- Hardness: See Table
- Heat Treatable: Yes
- Max. Hardness After Heat Treatment: See Table
- Specifications Met: ASTM A681
Spot Welding Electrodes with Pointed Tip

The pointed tip is best for tight areas or for a small weld. The shank is tapered for easy press-fit installation.
Tip | |||||||||
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RWMA Shank Taper Number | Dia. | Lg. | For Joining | Shape | Dia. | Material | Specifications Met | Each | |
4 | 31/64" | 3" | Steel, Stainless Steel | Pointed | 3/16" | 182 Copper | RWMA Bulletin 16 | 0000000 | 00000 |
Spot Welding Electrodes with Flat Tip

The flat tip creates a larger weld and can be used when appearance is less important. The shank is tapered for easy press-fit installation.
Tip | |||||||||
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RWMA Shank Taper Number | Dia. | Lg. | For Joining | Shape | Dia. | Material | Specifications Met | Each | |
4 | 31/64" | 3" | Steel, Stainless Steel | Flat | 31/64" | 182 Copper | RWMA Bulletin 16 | 0000000 | 00000 |
Cap-Style Spot Welding Electrodes with Flat Tip

The flat tip creates a larger weld and can be used when appearance is less important. The shank is tapered for easy press-fit installation.
Tip | |||||||||
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RWMA Shank Taper Number | Dia. | Lg. | For Joining | Shape | Dia. | Material | Specifications Met | Each | |
4 | 31/64" | 1 1/8" | Steel, Stainless Steel | Flat | 31/64" | 182 Copper | RWMA Bulletin 16 | 0000000 | 00000 |
Cap-Style Spot Welding Electrodes with Pointed Tip

The pointed tip is best for tight areas or for a small weld. The shank is tapered for easy press-fit installation.
Tip | |||||||||
---|---|---|---|---|---|---|---|---|---|
RWMA Shank Taper Number | Dia. | Lg. | For Joining | Shape | Dia. | Material | Specifications Met | Each | |
4 | 31/64" | 1 1/8" | Steel, Stainless Steel | Pointed | 3/16" | 182 Copper | RWMA Bulletin 16 | 0000000 | 00000 |