Starrett 54729 A2 Tool Steel Flat Stock 3/8 X 1-1/4 X 18 in

Product Description

The STARRETT 54729 is an A2 air-hardening tool steel flat stock bar used in toolmaking, die making, fixture building, and precision machining applications. Measuring 0.375 inches thick, 1.25 inches wide, and 18 inches long, it ships in a ready-to-machine condition. A2 tool steel is known for its excellent dimensional stability during heat treatment and its balanced combination of wear resistance and toughness. This stock is held to tight tolerances: plus or minus 0.001 inches on thickness and square, plus 0.000 to 0.005 inches on width, and plus 0.250 inches on length. Machinists, tool and die makers, and industrial maintenance professionals work with this material to produce punches, dies, gauges, and cutting tools.

This flat stock is suited for job shop and production toolroom environments where consistent material quality and close dimensional control are required. The 18-inch length provides practical working stock for a range of toolmaking cuts. A2 air-hardening steel is commonly selected when distortion-free hardening is critical, making it a standard choice for intricate die components and precision fixtures in both prototype and production settings.

Key Features

• AISI A2 air-hardening tool steel for minimal distortion during heat treatment
• Thickness: 0.375 inches with plus or minus 0.001 inch tolerance
• Width: 1.25 inches with plus 0.000 to 0.005 inch tolerance
• Length: 18 inches with plus 0.250 inch tolerance
• Square tolerance held to plus or minus 0.001 inches
• Consistent cross-section suitable for direct use in toolmaking operations

Compatibility

Designed as a general-purpose A2 tool steel flat stock for toolrooms, die shops, and precision machining operations requiring air-hardening material in bar form.

Installation Notes

Cutting, grinding, and machining of tool steel flat stock should be performed by qualified machinists or tool and die makers using appropriate metal-cutting equipment. Follow established shop safety procedures including proper workholding and eye protection. Heat treatment of A2 steel should be carried out in a controlled atmosphere or vacuum furnace to achieve specified hardness; consult the material data sheet for proper austenitizing and tempering procedures. Allow material to reach ambient temperature before taking final dimensional measurements.