Starrett AISI Tool Steel Flat Stock

Starrett AISI tool steel flat stock is precision-ground oil-hardening tool steel bar stock for toolmakers, machinists, and fabricators. Often called O1 flat stock, ground flat stock, or tool steel bar, it is used to make custom tooling, fixtures, and precision components in the shop.

Key Features:

• AISI O1 oil-hardening tool steel, a general-purpose grade used across tool and die work
• Precision-ground surfaces for consistent thickness and flatness
• Machines readily in the annealed state and can be heat treated for higher hardness and wear resistance
• Supplied in standard 18-inch lengths
• Made by Starrett, a long-established maker of precision tools and measuring instruments

Common Applications:

• Punches, dies, and stamping tools
• Gauges, templates, and jigs
• Fixtures, cutting tools, and wear parts
• Precision parts and shims for general machining

Starrett flat stock gives machine shops, tool rooms, and hobbyists a dependable, accurately finished starting material. It cuts down on stock removal and setup time.