Starrett 54362 O1 Tool Steel Flat Stock 1/4x1/2x36 in

Product Description

The STARRETT 54362 is an O1 oil-hardening tool steel flat stock bar sized at 0.25 inches thick, 0.5 inches wide, and 36 inches long. O1 is an oil-hardening, cold-work tool steel known for its excellent machinability in the annealed state and its ability to hold a sharp edge after hardening. This flat stock is manufactured to tight dimensional tolerances, with thickness held to plus or minus 0.001 inches and length tolerance of plus 0.015 inches. It is used by machinists, toolmakers, and metalworking professionals who need a reliable, pre-cut blank for tooling, gauges, punches, dies, or other precision components that will be hardened and ground to final dimension.

This flat stock is suited for general toolroom and production applications where O1 tool steel is specified. Typical uses include fabricating cutting tools, forming dies, jigs, fixtures, and custom gauges in job shops, maintenance departments, and tool-and-die operations. The 36-inch length provides a full bar that can be cut to shorter blanks as required. Its consistent cross-section and controlled tolerances reduce setup time when grinding or machining to final size.

Key Features

• AISI Type O1 oil-hardening tool steel material specification
• Thickness tolerance of plus or minus 0.001 inches for precise fit in tooling applications
• Width tolerance of 0.0000 to minus 0.005 inches
• Length tolerance of plus 0.015 inches
• Edge squareness held to 0.003 inches per inch on all edges
• Full 36-inch length allows multiple blanks from a single bar

Compatibility

Designed as a standard O1 oil-hardening tool steel flat bar for general toolroom, die-making, and precision machining applications where AISI Type O1 material is required.

Installation Notes

Cutting, grinding, and machining should be performed by a qualified machinist or toolmaker using appropriate personal protective equipment. The bar is supplied in the annealed (soft) condition and must be oil-hardened and tempered by a qualified heat-treater before use in cutting or forming applications. Follow the material manufacturer guidelines for hardening temperature, quench medium, and tempering cycle. Do not attempt to weld O1 tool steel without following proper pre-heat and post-heat procedures, as the alloy content makes it susceptible to cracking.