Starrett 54516 O1 Tool Steel Flat Stock 1-1/8x3x36 in

Product Description

The STARRETT 54516 is an O1 oil-hardening tool steel flat stock bar used in toolmaking, die making, and precision machining applications. Manufactured to AISI Type O1 specifications, this flat stock measures 1-1/8 inches thick, 3 inches wide, and 36 inches long, with a weight of 34.43 pounds. Thickness tolerance is held to plus or minus 0.001 inches, making it suitable for applications where dimensional accuracy is critical before and after heat treatment. Licensed machinists, toolmakers, and metal fabricators work with this material to produce punches, dies, gauges, and fixtures that require consistent stock dimensions.

O1 tool steel flat stock is used primarily in job shops, tool and die shops, and precision machining operations. This bar stock is appropriate for applications requiring moderate wear resistance and good machinability in the annealed state. It is commonly rough-machined to near-net shape, then oil-quenched during heat treatment to achieve final hardness. The 36-inch length provides a practical working blank for most standard tooling and fixturing jobs. This stock ships in annealed condition and is intended for use by skilled tradespeople who will perform final shaping and heat treatment as required by the application.

Key Features

• AISI Type O1 oil-hardening tool steel — good machinability in annealed state, oil-quench heat treatment
• Thickness held to plus or minus 0.001 inches for precise pre-machined dimensional control
• Width tolerance of 0.000 to minus 0.005 inches maintains consistent cross-section
• Length tolerance of plus 0.015 inches allows full usable length on every bar
• Edge squareness held to 0.003 inches per inch across all edges
• 34.43-pound bar weight suitable for substantial tooling blanks

Compatibility

Designed as a general-purpose O1 oil-hardening tool steel flat stock blank for toolmaking, die making, and precision fixture fabrication. Suitable for any application specifying AISI Type O1 material in flat bar form.

Installation Notes

Cutting, grinding, and machining of tool steel flat stock should be performed by qualified machinists or toolmakers using appropriate metalworking equipment. Secure the workpiece properly before any cutting operation to prevent movement. Heat treatment, including oil quenching, should follow established metallurgical procedures for AISI O1 tool steel and be performed only by personnel trained in heat-treating operations. Wear appropriate PPE including eye protection and heat-resistant gloves whenever handling or processing this material.