System of Measurement System of Measurement |
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Diameter Diameter |
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Shape Shape |
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 | Rod and Disc |
Material Material |
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Tolerance Rating Tolerance Rating |
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Certificate Certificate |
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Hardness Rating Hardness Rating |
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Fabrication Fabrication |
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Maximum Hardness After Heat Treatment Maximum HardnessAfter Heat Treatment |
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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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Yield Strength Yield Strength |
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Elongation Elongation |
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Appearance Appearance |
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 | Plain |
Hardness Hardness |
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About Tool Steel
More
Oversized Multipurpose Oil-Hardening O1 Tool Steel Rods and Discs
- Yield Strength: 50,000 psi
- Hardness: Rockwell B95 (Medium)
- Heat Treatable: Yes
- Max. Hardness After Heat Treatment: Rockwell C62
An oversized diameter allows for finishing to your exact requirements. Often used for dies, punches, and gauges, O1 tool steel is an oil-hardening material that resists wear and abrasion. These rods and discs 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.
Rods
| Dia. | Dia. Tolerance | Mechanical Finish | Straightness Tolerance | 1 ft. Lg. | 3 ft. Lg. | 6 ft. Lg. | |
| 1/2" | 0.005" to 0.02" | Ground | 1/8" per 5 ft. | 00000000 | |||
| 5/8" | 0.005" to 0.02" | Ground | 1/8" per 5 ft. | 00000000 | |||
| 3/4" | 0.005" to 0.02" | Ground | 1/8" per 5 ft. | 00000000 | |||
| 7/8" | 0.005" to 0.02" | Ground | 1/8" per 5 ft. | 00000000 | |||
| 1" | 0.005" to 0.031" | Ground | 1/8" per 5 ft. | 00000000 | |||
| 1 1/8" | 0.005" to 0.031" | Ground | 1/8" per 5 ft. | 00000000 | |||
| 1 1/4" | 0.005" to 0.031" | Ground | 1/8" per 5 ft. | 00000000 | |||
| 1 1/2" | 0.005" to 0.031" | Ground | 1/8" per 5 ft. | 00000000 | |||
| 1 3/4" | 0.005" to 0.031" | Ground | 1/8" per 5 ft. | 00000000 | |||
| 2" | 0.01" to 0.062" | Ground | 1/8" per 5 ft. | 00000000 | |||
| 2 1/4" | 0.01" to 0.062" | Ground | 1/8" per 5 ft. | 00000000 | |||
| 2 1/2" | 0.01" to 0.062" | Ground | 1/8" per 5 ft. | 00000000 | |||
| 2 3/4" | 0.01" to 0.062" | Ground | 1/8" per 5 ft. | 00000000 | |||
| 3" | 0.01" to 0.062" | Ground | 1/8" per 5 ft. | 00000000 | |||
| 3 1/4" | 0.01" to 0.062" | Ground | 1/8" per 5 ft. | 00000000 | |||
| 3 1/2" | 0.01" to 0.062" | Ground | 1/8" per 5 ft. | 00000000 | |||
| 3 3/4" | 0.01" to 0.062" | Ground | 1/8" per 5 ft. | 00000000 | |||
| 4" | 0.01" to 0.062" | Ground | 1/8" per 5 ft. | 00000000 |
Additional Rod Lengths
To Order: Please specify length in increments of 0.25" within the range listed.
| Dia. | Dia. Tolerance | Mechanical Finish | Straightness Tolerance | Choose a Length | Per Inch | |
| 1/4" | 0.005" to 0.031" | Turned | 1/8" per 5 ft. | 13" to 90" | 0000000 | 00000 |
| 3/8" | 0.005" to 0.031" | Turned | 1/8" per 5 ft. | 13" to 90" | 0000000 | 000 |
| 1/2" | 0.005" to 0.031" | Turned | 1/8" per 5 ft. | 13" to 90" | 0000000 | 000 |
| 5/8" | 0.005" to 0.031" | Turned | 1/8" per 5 ft. | 13" to 90" | 0000000 | 0000 |
| 3/4" | 0.005" to 0.031" | Turned | 1/8" per 5 ft. | 13" to 90" | 0000000 | 0000 |
| 7/8" | 0.005" to 0.031" | Turned | 1/8" per 5 ft. | 13" to 90" | 0000000 | 0000 |
| 1" | 0.005" to 0.031" | Turned | 1/8" per 5 ft. | 13" to 90" | 0000000 | 0000 |
| 1 1/8" | 0.005" to 0.031" | Turned | 1/8" per 5 ft. | 13" to 90" | 0000000 | 0000 |
| 1 1/4" | 0.005" to 0.031" | Turned | 1/8" per 5 ft. | 13" to 90" | 0000000 | 0000 |
| 1 3/8" | 0.005" to 0.031" | Turned | 1/8" per 5 ft. | 13" to 90" | 0000000 | 0000 |
| 1 1/2" | 0.005" to 0.031" | Turned | 1/8" per 5 ft. | 13" to 90" | 0000000 | 0000 |
| 1 5/8" | 0.005" to 0.031" | Turned | 1/8" per 5 ft. | 13" to 90" | 0000000 | 0000 |
| 1 3/4" | 0.005" to 0.031" | Turned | 1/8" per 5 ft. | 13" to 90" | 0000000 | 0000 |
| 2" | 0.010" to 0.093" | Turned | 1/8" per 5 ft. | 13" to 90" | 0000000 | 0000 |
| 2 1/4" | 0.010" to 0.093" | Turned | 1/8" per 5 ft. | 13" to 90" | 0000000 | 0000 |
| 2 1/2" | 0.010" to 0.093" | Turned | 1/8" per 5 ft. | 13" to 90" | 0000000 | 0000 |
| 2 3/4" | 0.010" to 0.093" | Turned | 1/8" per 5 ft. | 13" to 90" | 0000000 | 0000 |
| 3" | 0.010" to 0.093" | Turned | 1/8" per 5 ft. | 13" to 90" | 0000000 | 00000 |
| 3 1/4" | 0.010" to 0.093" | Turned | 1/8" per 5 ft. | 13" to 90" | 0000000 | 00000 |
| 3 1/2" | 0.010" to 0.093" | Turned | 1/8" per 5 ft. | 13" to 90" | 0000000 | 00000 |
| 3 3/4" | 0.010" to 0.093" | Turned | 1/8" per 5 ft. | 13" to 90" | 0000000 | 00000 |
| 4" | 0.010" to 0.093" | Turned | 1/8" per 5 ft. | 13" to 90" | 0000000 | 00000 |
| 4 1/2" | 0.010" to 0.093" | Turned | 1/8" per 5 ft. | 13" to 90" | 0000000 | 00000 |
| 5" | 0.010" to 0.093" | Turned | 1/8" per 5 ft. | 13" to 90" | 0000000 | 00000 |
| 5 1/2" | 0.010" to 0.093" | Turned | 1/8" per 5 ft. | 13" to 90" | 0000000 | 00000 |
| 6" | 0.010" to 0.093" | Turned | 1/8" per 5 ft. | 13" to 90" | 0000000 | 00000 |
| 8" | 0.010" to 0.093" | Turned | 1/8" per 5 ft. | 13" to 90" | 0000000 | 00000 |
Discs
| Dia. | Dia. Tolerance | Mechanical Finish | Each | |
1/2" Lg. | ||||
|---|---|---|---|---|
| 4" | 0.015" to 0.062" | Ground | 0000000 | 000000 |
| 6" | 0.015" to 0.062" | Ground | 0000000 | 00000 |
| 8" | 0.015" to 0.062" | Ground | 0000000 | 00000 |
1" Lg. | ||||
| 4" | 0.015" to 0.062" | Ground | 0000000 | 00000 |
| 6" | 0.015" to 0.062" | Ground | 0000000 | 00000 |
| 8" | 0.015" to 0.062" | Ground | 0000000 | 000000 |
1 1/2" Lg. | ||||
| 4" | 0.015" to 0.062" | Ground | 0000000 | 00000 |
| 6" | 0.015" to 0.062" | Ground | 0000000 | 00000 |
| 8" | 0.015" to 0.062" | Ground | 0000000 | 000000 |
2 1/2" Lg. | ||||
| 4" | 0.015" to 0.062" | Ground | 0000000 | 00000 |
| 6" | 0.015" to 0.062" | Ground | 0000000 | 000000 |
| 8" | 0.015" to 0.062" | Ground | 0000000 | 000000 |
3 1/2" Lg. | ||||
| 4" | 0.015" to 0.062" | Ground | 0000000 | 00000 |
| 6" | 0.015" to 0.062" | Ground | 0000000 | 000000 |
| 8" | 0.015" to 0.062" | Ground | 0000000 | 000000 |
4" Lg. | ||||
| 4" | 0.015" to 0.062" | Ground | 0000000 | 000000 |
| 6" | 0.015" to 0.062" | Ground | 0000000 | 000000 |
| 8" | 0.015" to 0.062" | Ground | 0000000 | 000000 |