Starrett 57329 A2 Tool Steel Flat Stock 3/16x3/16x36 in

Product Description

The STARRETT 57329 is an A2 air-hardening tool steel flat stock bar intended for toolmakers, die makers, machinists, and maintenance technicians who require tight-tolerance raw material for fabricating tooling, punches, dies, fixtures, and wear components. Measuring 3/16 inches thick by 3/16 inches wide by 36 inches long and weighing 0.41 pounds, this flat stock is produced to AISI A2 specifications. A2 tool steel offers excellent dimensional stability during air hardening, making it a reliable choice where distortion control after heat treatment is critical. Thickness tolerance is held to plus or minus 0.001 inches, ensuring consistent stock removal during grinding and finishing operations.

This flat stock is suited for job shop, toolroom, and maintenance repair environments where small-section tool steel is cut to length and machined or ground into finished tooling. The 36-inch bar length provides practical stock for multiple smaller blanks. Applications include form punches, small die sections, fixture blades, scribes, and other precision tooling components that will undergo subsequent heat treatment and grinding to final dimensions.

Key Features

• AISI A2 air-hardening tool steel for controlled distortion during heat treatment
• Thickness: 3/16 inches with tolerance of plus or minus 0.001 inches
• Width: 3/16 inches with tolerance of plus 0.000 to minus 0.005 inches
• Length: 36 inches with tolerance of plus 0.250 inches
• Square tolerance held to plus or minus 0.001 inches for consistent geometry
• Lightweight single bar at 0.41 pounds — sized for bench stock and small tooling blanks

Compatibility

Designed as a general-purpose A2 tool steel flat stock for toolroom and machining applications where AISI A2 air-hardening material is specified.

Installation Notes

Cutting, grinding, and machining of tool steel flat stock should be performed by qualified machinists or toolmakers using appropriate coolant and PPE. A2 tool steel is typically hardened by air quenching after austenitizing and should be handled according to the heat treater's established process parameters. Always secure stock firmly in a vise or fixture before sawing or grinding. Follow applicable shop safety standards when cutting or machining hardened or pre-hardened steel sections.