Starrett 54624 A2 Tool Steel Air-hardening Flat Stock

Product Description

The STARRETT 54624 is an A2 air-hardening tool steel flat stock bar intended for toolmakers, die makers, machinists, and maintenance technicians who need precision-ground stock ready for layout, fabrication, or heat treatment. This piece measures 0.25 inches thick, 2.5 inches wide, and 18 inches long, with a weight of 3.19 pounds. A2 tool steel offers excellent dimensional stability during air hardening and good wear resistance, making it a practical choice for punches, dies, gauges, and general toolroom applications. Thickness and squareness tolerances are held to plus or minus 0.001 inches, ensuring consistent stock removal and predictable fit-up during machining operations.

This flat stock is suited for toolroom and manufacturing environments where close-tolerance blanks are required before machining, grinding, or heat treatment. Typical applications include fabricating custom dies, jigs, fixtures, and cutting tools. The 18-inch length provides useful working stock for most single-piece toolroom jobs without requiring further parting before roughing. Trade professionals working in tool and die, industrial maintenance, and precision machining will find this stock dimensionally consistent and ready for immediate layout work.

Key Features

• AISI A2 air-hardening tool steel for stable, low-distortion heat treatment
• Thickness tolerance held to plus or minus 0.001 inches for precise stock removal
• Width tolerance of plus 0.000 to 0.005 inches ensures controlled fit-up
• Square tolerance of plus or minus 0.001 inches supports accurate layout and machining
• Length tolerance of plus 0.250 inches provides clean, usable ends with material for facing
• 3.19 pounds — manageable single-piece flat bar for bench and machine work

Compatibility

Designed as a general-purpose A2 tool steel flat stock blank compatible with standard toolroom machining, grinding, and heat treatment processes used in die making, fixture fabrication, and precision maintenance applications.

Installation Notes

Machining and grinding of tool steel flat stock should be performed by qualified machinists or toolmakers using appropriate coolant and feeds for tool steel. Always follow established shop safety practices when cutting, grinding, or handling stock material with sharp edges. Heat treatment of A2 steel should be performed according to the material specification requirements for austenitizing temperature and air quench procedure. Wear appropriate PPE including gloves and eye protection during all cutting and finishing operations.