Starrett 54401 Precision Ground Flat Stock 5/16" x 4" x 36" AISI O1 Tool Steel

The Starrett 54401 is a precision ground flat stock made from AISI O1 oil hardening tool steel, measuring 5/16" thick x 4" wide x 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 for superior machinability and heat treatment response
• Precision ground surfaces ensure consistent thickness and flatness
• Dimensionally stable during heat treatment with minimal risk of warping or cracking
• Excellent for intricate work including thin sections and detailed tooling
• Can be hardened to Rockwell C 57-62 when properly heat treated
• Good wear resistance and edge retention after hardening

O1 tool steel is a versatile, general-purpose tool steel that offers an excellent balance of toughness, machinability, and hardness. It is commonly used for cutting tools, gauges, jigs, fixtures, punches, and precision machine components. The precision ground finish allows for immediate use in many applications or provides an excellent starting point for further machining.