| Brinell Hardness | 177 to 212 |
| Country of Origin (subject to change) | United States |
| Finish | Unfinished |
| Fractional Size | 3/8 in x 3/4 in x 36 in |
| Grade, Material Grade | O1 |
| Hardness Scale | 177 to 212 BHN; Rockwell B88 to 95 |
| Heat Treatable, Includes Material Certificate | Yes |
| Heat Treatment | Oil Hardened |
| Item | O1 Tool Steel Rectangular Bar |
| Length Tolerance | +0.250 to +0.500 in |
| Length, Overall Length | 36 in |
| Material | Steel |
| Mechanical Finish | Precision Ground |
| Nominal Size (WxL) | 3/4 in x 36 in |
| Overall Width, Width | 3/4 in |
| Product Type | Tool Steel Flat Stock |
| Rockwell Hardness | B88 to B95 |
| Shape | Rectangular Bar |
| Standards | ASTM-A681, FED-QQ-T-570, SAE-J-437 |
| System of Measurement | Inch |
| Thickness | 3/8 in |
| Tolerance Rating | Oversized |
