Starrett 54165 O1 Tool Steel Flat Stock 0.5x14x18 in

Product Description

The STARRETT 54165 is an O1 oil-hardening tool steel flat stock blank used for fabricating dies, punches, gauges, and general toolroom components. Machined to tight tolerances, this piece measures 0.5 inches thick, 14 inches wide, and 18 inches long and weighs 35.7 pounds. It is produced to AISI Type O1 material specification, a widely used oil-hardening tool steel known for its dimensional stability during heat treatment. Thickness tolerance is held to plus or minus 0.001 inches, making it suitable for precision toolmaking applications where tight fits are required. Length tolerance is plus 0.25 inches, and width tolerance runs from 0.000 to 0.015 inches. Edge squareness is held to 0.003 inches per inch.

This flat stock is intended for use in toolrooms, machine shops, and manufacturing environments where O1 tool steel stock is needed for custom tooling. Typical applications include cutting tools, jigs, fixtures, mold components, and wear parts. It ships in a single piece and is ready for grinding, milling, or EDM operations before hardening. Machinists and tool and die makers work with this material prior to oil-quench heat treatment to reach desired hardness levels.

Key Features

• AISI Type O1 oil-hardening tool steel for consistent heat treat response
• Thickness held to plus or minus 0.001 inches for precision fitment
• Edge squareness of 0.003 inches per inch across all edges
• Large 14 inches by 18 inches blank allows flexible layout and nesting of multiple parts
• Single-piece unit at 35.7 pounds — no cutting charge or remnant waste on receipt

Compatibility

Designed as a standard O1 oil-hardening tool steel flat stock blank suitable for general toolroom and precision machining applications requiring AISI Type O1 material.

Installation Notes

Machining and finishing of O1 tool steel flat stock should be performed by qualified machinists or tool and die makers familiar with tool steel work practices. All grinding, milling, or drilling operations should be completed before oil-quench heat treatment, as post-hardening machining requires specialized grinding equipment. Follow the steel supplier and shop safety protocols for handling heavy stock pieces, and use appropriate lifting equipment given the 35.7-pound weight of this blank. Refer to applicable shop safety and OSHA standards when operating machine tools on this material.