Starrett 54086 O1 Tool Steel Flat Stock 0.25x8x18 in

Product Description

The STARRETT 54086 is an O1 oil-hardening tool steel flat stock blank used in toolmaking, die work, and precision machining applications. Manufactured to AISI Type O1 specification, this flat stock measures 0.25 inches thick, 8 inches wide, and 18 inches long. Thickness tolerance is held to plus or minus 0.001 inches, and squareness is maintained at 0.003 inches per inch on all edges. At 10.2 pounds, this is a substantial blank suited for fabricating punches, dies, gauges, and cutting tools. Machinists, tool and die makers, and industrial fabricators work with this material prior to heat treatment and hardening.

O1 tool steel flat stock is used in job shops, toolrooms, and maintenance departments for producing or repairing tooling components. This blank is appropriate for applications requiring moderate wear resistance and good machinability before hardening. The 8-inch width and 18-inch length provide enough material to lay out multiple smaller tool profiles or one larger die section. It is also used as raw stock for custom gauges, jigs, and fixtures where tight dimensional tolerances are required.

Key Features

• AISI Type O1 oil-hardening tool steel for reliable heat-treat response
• Thickness held to plus or minus 0.001 inches for precise stock removal planning
• Width tolerance of 0.000 to minus 0.005 inches for consistent fit in layout work
• Length tolerance of plus 0.250 inches, minus 0 inches ensures minimum usable length
• Edge squareness of 0.003 inches per inch on all edges for accurate setup
• 10.2-pound blank provides substantial material for multiple tool profiles

Compatibility

Designed as standard AISI O1 oil-hardening flat stock suitable for general toolroom and die-making applications where O1 grade tool steel is specified.

Installation Notes

O1 tool steel flat stock is worked by machinists and tool and die makers using conventional milling, grinding, and sawing equipment prior to heat treatment. All layout, drilling, and rough machining should be completed in the annealed condition before oil-hardening heat treatment is performed. Hardening, tempering, and quench operations should follow AISI O1 heat-treat guidelines and be performed by qualified personnel or a certified heat-treat facility. Allow material to reach ambient temperature before final grinding to avoid dimensional distortion.