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The STARRETT 53962 is an O1 oil-hardening tool steel flat stock bar used in precision toolmaking, die making, and machining applications. Manufactured to AISI Type O1 material specification, this flat stock measures 1/16 inch thick, 3 inches wide, and 18 inches long, with a weight of 0.96 pounds. Thickness tolerance is held to plus or minus 0.001 inches, and edge squareness is controlled to 0.003 per inch, making this stock suitable for applications requiring close dimensional accuracy before hardening. Machinists, tool and die makers, and metal fabricators work with this material regularly.
O1 oil-hardening tool steel flat stock is used in professional machine shops, toolrooms, and fabrication environments. It is well-suited for making punches, dies, gauges, jigs, and fixtures where a material that can be machined in its annealed state and then oil-hardened to final hardness is required. This piece is sold individually and is intended for direct use or further machining prior to heat treatment.
Designed as a standard O1 oil-hardening tool steel flat stock suitable for general toolmaking, die making, and precision machining applications requiring annealed stock that will be oil-hardened after machining.
Machining and heat treatment of tool steel should be performed by qualified machinists or tool and die makers familiar with O1 steel properties. Always follow proper safety procedures when grinding, cutting, or machining tool steel, including appropriate PPE for chip and coolant hazards. Oil-hardening heat treatment requires a controlled atmosphere or appropriate quench medium and should follow established metallurgical procedures. Consult applicable shop safety codes before performing heat treatment operations.
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