Starrett 54392 Precision Ground Flat Stock 5/16" x 1/2" x 36" AISI O1 Tool Steel

The Starrett 54392 is a precision ground flat stock bar made from AISI O1 oil hardening tool steel, measuring 5/16" thick x 1/2" wide x 36" long. This high-quality tool steel is ideal for manufacturing precision tools, jigs, fixtures, and gauges where dimensional stability and hardness are critical.

Key Features:

• AISI O1 oil hardening tool steel for superior wear resistance and edge retention
• Precision ground on all sides for tight tolerances and flatness
• Dimensionally stable during heat treatment with minimal distortion
• Excellent for intricate work and thin sections with minimal risk of cracking
• Can be hardened to 57-64 HRC depending on heat treatment
• Precision dimensions: 5/16" x 1/2" x 36" length

O1 tool steel is a versatile, oil-hardening grade that machines easily in the annealed condition and responds predictably to heat treatment. Its balanced composition provides an excellent combination of toughness, wear resistance, and dimensional stability, making it the preferred choice for toolmakers and machinists working on precision applications.