Starrett 57534 A2 Tool Steel Flat Stock 3/8 X 1-3/4 X 18 in

Product Description

The STARRETT 57534 is an A2 air-hardening tool steel flat stock bar intended for toolmakers, machinists, and die makers who require close-tolerance raw material for custom tooling, dies, punches, and fixtures. This bar measures 0.375 inches thick, 1.75 inches wide, and 18 inches long, and weighs 3.35 pounds. It is manufactured to AISI A2 tool steel specification, which provides good dimensional stability during heat treatment and strong wear resistance after hardening. Thickness and squareness tolerances are held to plus or minus 0.001 inches, making this stock suitable for precision layout and machining work before final heat treat.

A2 flat stock sees regular use in tool and die shops, maintenance departments, and production machining environments. It is commonly used to fabricate blanking dies, forming tools, gages, and wear components. The 18-inch length provides adequate stock for a broad range of tooling applications without requiring further rough cutting in most setups. This bar ships as a single piece and requires no minimum order beyond one unit.

Key Features

• AISI A2 air-hardening tool steel for dimensional stability during heat treat
• Thickness: 0.375 inches with plus or minus 0.001-inch tolerance
• Width: 1.75 inches with plus 0.000 to 0.005-inch tolerance
• Length: 18 inches with plus 0.250-inch length tolerance
• Squareness tolerance held to plus or minus 0.001 inches
• Ready-to-machine flat stock for dies, punches, gages, and fixtures

Compatibility

Designed as a general-purpose A2 air-hardening tool steel flat bar suitable for tool and die fabrication, machining, and heat treat applications requiring AISI A2 material specification.

Installation Notes

Machining and grinding of A2 tool steel flat stock is typically performed by journeyman machinists or tool and die makers using conventional milling, grinding, and EDM equipment. Heat treating should be performed by a qualified heat treat technician following AISI A2 hardening and tempering procedures. Always allow the bar to reach ambient temperature before taking final measurements, as thermal expansion will affect tolerance-critical dimensions. Wear appropriate PPE when cutting, grinding, or handling sharp-edged stock.