Starrett 54635 A2 Tool Steel Flat Stock 5/16x2x36 in

Product Description

The STARRETT 54635 is an A2 air-hardening tool steel flat stock bar measuring 5/16 inches thick, 2 inches wide, and 36 inches long. Ground and held to close tolerances, this flat stock is used by tool and die makers, machinists, and maintenance technicians as raw material for punches, dies, fixtures, gauges, and general tooling applications. A2 tool steel offers a balanced combination of wear resistance, toughness, and dimensional stability during heat treatment, making it a reliable choice when air-hardening steel is specified. At 7.33 pounds, this bar ships as a single piece with no minimum beyond one unit.

This flat stock is suited for both job shop and production tooling environments. It is commonly used to fabricate cutting tools, forming dies, blanking punches, and precision fixtures where close tolerances and predictable heat treatment response are required. The AISI A2 specification makes it appropriate for applications where D2 may be too brittle and O1 lacks sufficient air-hardening capability. Machinists and toolmakers working in general metalworking, stamping, and die maintenance will find this bar stock ready to machine in the annealed condition before hardening.

Key Features

• AISI A2 air-hardening tool steel for predictable dimensional stability during hardening
• Close thickness tolerance of plus or minus 0.001 inches for consistent stock removal calculations
• Width tolerance of plus 0.000 to plus 0.005 inches held across the full bar width
• Length tolerance of plus 0.25 inches from nominal 36 inches
• Squareness held to 0.003 inches per inch on all edges
• Single-piece packaging with no multi-unit minimum required

Compatibility

Designed as a standard AISI A2 air-hardening tool steel flat stock suitable for general toolmaking, die work, and fixture fabrication where A2 material specification is required.

Installation Notes

This material is supplied in the annealed condition and is intended for machining prior to hardening. Heat treatment should be performed by a qualified tool and die maker or heat treater following recognized A2 hardening procedures. Use appropriate cutting fluid and tooling when machining tool steel. Always follow shop safety protocols, including proper handling of stock edges and secure workholding during any sawing or milling operations.