Starrett 56962 O1 Tool Steel Flat Stock 3/16x1-1/2x18 in

Product Description

The STARRETT 56962 is a precision-ground 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 3/16 inches thick, 1-1/2 inches wide, and 18 inches long. Thickness and width tolerances are held to +0.0100 to 0.0150 inches, with a length tolerance of +0.2500 inches. Edge squareness is maintained at 0.003 inches per inch across all edges. O1 tool steel is well suited to applications requiring good machinability in the annealed state followed by oil-quench hardening in the field or shop.

This flat stock is a standard choice for fabricating punches, dies, gauges, jigs, fixtures, and cutting tools in job shops and toolrooms. Its consistent cross-section and tight dimensional tolerances support layout and machining work where stock removal must be predictable. Machinists, tool and die makers, and millwrights working in both small shops and production environments will find this bar ready for use as received in the annealed condition. It is sold as a single 18-inch length.

Key Features

• AISI Type O1 oil-hardening tool steel for good machinability and reliable through-hardening response
• Thickness and width held to +0.0100 to 0.0150 inches for precise stock allowance calculations
• Edge squareness of 0.003 inches per inch on all edges reduces setup time
• Length tolerance of +0.2500 inches allows for facing or parting to final length
• Single-piece quantity suitable for one-off tooling and prototype work
• 18-inch length covers common tooling blank and fixture plate requirements

Compatibility

Designed as a standard AISI O1 oil-hardening tool steel flat bar suitable for general toolmaking and die-making applications where O1 grade material 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. Material is supplied in the annealed condition and must be hardened and tempered by a qualified heat treater or in-shop heat-treat process before use in cutting or wear applications. Follow established shop safety practices when cutting or grinding tool steel, including appropriate eye protection and ventilation. Hardening operations should follow the material supplier's recommended quench and temper procedures for AISI O1 grade.