Starrett 54260 O1 Tool Steel Flat Stock 1/16x1-1/4x36 in

Product Description

The STARRETT 54260 is an O1 oil-hardening tool steel flat stock bar intended for toolmakers, machinists, and die makers who need a reliable, pre-sized blank for cutting tools, punches, dies, jigs, and fixtures. Manufactured to AISI Type O1 specification, this flat bar measures 1/16 inch thick, 1-1/4 inches wide, and 36 inches long and weighs 0.8 pounds. Thickness tolerance is held to plus or minus 0.001 inches, making it suitable for applications where close dimensional control before heat treatment is required. O1 tool steel is known for its good machinability in the annealed state and its response to oil quench hardening.

This flat stock is used in toolroom and production machine shop environments. Typical applications include making form tools, hand scrapers, small punches, and precision fixtures. It is sold as a single 36-inch length, allowing a technician or machinist to cut it to final part length with standard metalworking equipment. The annealed condition means it can be machined, ground, or filed before hardening and tempering to final hardness.

Key Features

• AISI Type O1 oil-hardening tool steel for predictable hardening response and good wear resistance after heat treatment
• Thickness held to plus or minus 0.001 inches for reliable fit in close-tolerance tooling layouts
• Width tolerance of 0.000 to minus 0.005 inches supports consistent stock removal planning
• Length tolerance of plus 0.015 inches ensures full usable length
• Edge squareness: all edges held within 0.003 inches per inch of width
• Single 36-inch length ships as one piece with no minimum order beyond one unit

Compatibility

Designed as a standard AISI O1 oil-hardening tool steel flat bar suitable for general toolroom use wherever 1/16 inch by 1-1/4 inch cross-section flat stock is specified.

Installation Notes

Cutting, grinding, or machining should be performed while the stock is in the annealed condition prior to heat treatment. A licensed heat treater or qualified machinist should perform oil quench hardening and tempering to achieve target hardness. Use appropriate personal protective equipment and follow shop safety procedures when cutting or grinding tool steel. Verify final dimensions after any grinding operation before committing to heat treatment.