Starrett 53938 O1 Tool Steel Flat Stock 1/32x2x18 in

Product Description

The STARRETT 53938 is an O1 oil-hardening tool steel flat stock bar used in toolmaking, die making, and precision machining applications. Manufactured to AISI Type O1 material specification, this flat stock measures 1/32 inch thick, 2 inches wide, and 18 inches long, with a weight of 0.32 pounds. Thickness tolerance is held to plus or minus 0.001 inches, making it suitable for applications where dimensional accuracy matters before hardening. Machinists and toolmakers stock O1 flat stock because it machines cleanly in the annealed state and responds predictably to oil-quench hardening.

This flat stock is intended for use in machine shops, tool and die operations, and maintenance departments where custom tooling blanks, punches, dies, gibs, or wear strips are fabricated from raw stock. It is sold in single-piece quantity and is appropriate for both production shops and job shops needing precision flat bar in small runs. The 18-inch length provides a practical working blank for a range of hand-tool and machine-tool fabrication tasks.

Key Features

• AISI Type O1 oil-hardening tool steel for predictable heat-treat response
• Thickness held to plus or minus 0.001 inches for close-tolerance blanks
• Width tolerance of 0.000 to minus 0.005 inches
• Length tolerance of plus 0.250 inches, minus 0 inches
• Edge squareness: all edges held to 0.003 inches per inch
• Sold as a single piece with no minimum order beyond one unit

Compatibility

Designed as a standard O1 oil-hardening tool steel flat stock blank suitable for general toolmaking, die making, and precision fabrication applications where AISI Type O1 material is specified.

Installation Notes

Cutting, grinding, and machining should be performed with tooling appropriate for tool steel in the annealed condition. Heat treatment — including hardening and tempering — should follow established procedures for AISI O1 tool steel and should be performed by qualified personnel with proper equipment. Always use appropriate personal protective equipment when cutting or grinding tool steel stock. Consult material safety and heat-treat data for O1 before processing.