Starrett 53942 O1 Tool Steel Flat Stock 1/32x6x18 in

Product Description

The STARRETT 53942 is an O1 oil-hardening tool steel flat stock used in toolmaking, die work, and precision machining applications. It is manufactured to AISI Type O1 material specification and supplied in an annealed, machinable condition ready for custom shaping before heat treatment. The stock measures 1/32 inch thick, 6 inches wide, and 18 inches long, with tight thickness and squareness tolerances that make it suitable for jigs, fixtures, gauges, blanks, and cutting tools. At 0.96 pounds per piece, it is manageable for bench or machine shop work. Machinists and tool and die makers are the primary users of this material.

O1 tool steel flat stock in this size range is commonly used in job shops, toolrooms, and maintenance departments for fabricating custom tooling components. The 1/32 inch thickness suits thin gauge tooling inserts, shim stock applications, and precision blanks that require reliable hardness response through oil quenching. The 6 inch width and 18 inch length provide sufficient material for multiple parts from a single piece, reducing material waste on small production runs.

Key Features

• AISI Type O1 oil-hardening tool steel for predictable heat treat response
• Thickness tolerance of plus or minus 0.001 inches for close-tolerance tooling work
• Width tolerance of 0.000 to minus 0.005 inches
• Length tolerance of plus 0.250 inches, minus 0 inches
• Squareness tolerance of plus or minus 0.001 inches per edge, all edges within 0.003 inches per inch
• Supplied in annealed condition for machining prior to hardening

Compatibility

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

Installation Notes

Tool steel flat stock is processed by machinists and tool and die makers using conventional milling, grinding, and sawing equipment. Material should be machined to final form before oil hardening and tempering, following standard heat treatment procedures for AISI O1 tool steel. Wear appropriate PPE when cutting or grinding tool steel. Consult applicable shop safety standards and material data sheets before heat treating.