Starrett 54310 AISI O1 Tool Steel Flat Stock 1/8" x 4-1/2" x 36"

The Starrett 54310 is a precision-ground flat stock made from AISI O1 oil-hardening tool steel, measuring 1/8" thick x 4-1/2" wide x 36" long. This high-quality tool steel is ideal for fabricating custom cutting tools, gauges, jigs, fixtures, and precision machine components.

Key Features:

• AISI O1 oil-hardening tool steel for superior edge retention and machinability
• Dimensionally stable material minimizes warping during heat treatment
• Precision-ground to tight tolerances for accurate fabrication work
• Excellent for intricate work and thin sections with minimal risk of cracking
• Hardens to approximately 60-65 HRC when properly heat treated
• Can be annealed, machined, and re-hardened as needed

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. Its low-alloy composition makes it economical while still delivering professional-grade performance for tool making and general fabrication applications.