Starrett 54131 Precision Ground Flat Stock 3/8" x 6" x 18" AISI O1 Tool Steel

The Starrett 54131 is a precision ground flat stock bar made from AISI O1 oil-hardening tool steel, measuring 3/8" thick x 6" wide x 18" long. This high-quality tool steel is ideal for toolmaking, die work, and precision machining applications where dimensional stability is critical.

Key Features:

• AISI O1 oil-hardening tool steel for superior wear resistance and edge retention
• Dimensionally stable throughout heat treatment processes
• Precision ground to tight tolerances for accuracy
• Excellent for intricate work including thin sections with minimal risk of cracking
• Suitable for dies, punches, taps, reamers, and cutting tools
• Can be hardened to Rockwell C 57-62 for maximum durability

O1 tool steel is one of the most popular oil-hardening grades due to its excellent machinability in the annealed state and its ability to achieve high hardness with minimal distortion. The precision ground surfaces reduce setup time and material waste in your workshop.