Starrett 54106 AISI O1 Tool Steel Flat Stock 5/16" x 1-1/2" x 18"

The Starrett 54106 is a precision flat stock bar made from AISI O1 oil hardening tool steel, measuring 5/16" thick x 1-1/2" wide x 18" long. This high-quality tool steel is specifically designed for toolmakers, machinists, and precision fabricators who require dimensionally stable material for critical applications.

Key Features:

• AISI O1 oil hardening tool steel composition for superior hardness and wear resistance
• Dimensionally stable material minimizes warping during heat treatment
• Ideal for intricate work including thin sections with minimal risk of cracking
• Precision ground flat stock for accurate machining and fabrication
• Can be hardened to Rockwell C 57-62 for demanding applications
• Excellent machinability in the annealed condition

O1 tool steel is a versatile, oil-hardening grade that offers a superior combination of toughness, wear resistance, and edge-holding capability. This flat stock is perfect for making custom cutting tools, dies, punches, jigs, fixtures, and precision gauges where dimensional accuracy and hardness are critical.