Starrett 54138 Precision Flat Ground Stock 7/16" x 3/4" x 18" AISI O1 Tool Steel

The Starrett 54138 is a precision flat ground stock bar made from AISI O1 oil-hardening tool steel, measuring 7/16" thick x 3/4" wide x 18" long. This high-quality tool steel is ideal for manufacturing precision tooling, jigs, fixtures, gauges, and custom cutting tools.

Key Features:

• AISI O1 oil-hardening tool steel for superior machinability and wear resistance
• Precision ground flat stock with tight dimensional tolerances
• Dimensionally stable during heat treatment with minimal distortion
• Excellent for intricate work and thin sections with minimal risk of cracking
• Can be hardened to Rc 57-62 for maximum wear resistance
• Superior edge-holding properties for cutting tool applications

O1 tool steel is one of the most popular and versatile tool steels available, offering an excellent balance of toughness, wear resistance, and ease of heat treatment. This precision ground stock is ready for machining and can be heat treated to achieve the desired hardness for your specific application.