Starrett 54422 AISI O1 Tool Steel Flat Stock 3/8" x 7" x 36"

The Starrett 54422 is a precision-ground flat stock made from AISI O1 oil-hardening tool steel, measuring 3/8" thick by 7" wide by 36" long. This high-quality tool steel is ideal for toolmakers, machinists, and fabricators who require dimensionally stable material for precision work.

Key Features:

• AISI O1 oil-hardening tool steel composition for excellent wear resistance
• Dimensionally stable during heat treatment with minimal distortion
• Suitable for intricate work and thin sections with low risk of cracking
• Precision ground flat stock for tight tolerances
• Hardness range of 60-64 HRC when properly heat treated
• Excellent machinability in annealed condition

O1 tool steel is one of the most popular and versatile cold work tool steels, offering a good balance of toughness, wear resistance, and edge retention. It machines easily in the annealed state and responds predictably to heat treatment. This flat stock is commonly used for making jigs, fixtures, punches, dies, gauges, cutting tools, and other precision tooling applications where dimensional stability is critical.