Trusted Brand 5/64″ X 1″ X 36″ Starrett Precision Ground Flat Stock AISI O-1 Oil Hardened Steel 58890

5/64 inch thick x 1 inch wide x 36 inches long precision ground flat stock manufactured from AISI O-1 oil hardened tool steel. Supplied as a single piece.

Flat, precision ground surface reduces setup time for milling, drilling, and grinding operations

Uniform hardness after oil hardening provides predictable wear resistance and re-sharpening versatility

One-piece stock minimizes variability in thickness and warping compared to multi-piece assemblies

Suitable for creating jigs, fixtures, gauge blocks, and forming dies

Machinable with standard tooling; supports drilling, milling, and grinding with consistent results

Stable flatness over the length due to precise grinding, reducing the need for frequent truing in fabrication workflows

Specifications

Material: AISI O-1 oil hardened tool steel

Form: Precision ground flat stock

Thickness: 5/64 inch

Width: 1 inch

Length: 36 inches

Finish/heat treatment: Oil hardened

Stock type: Solid, single piece

Applications

Tool and die shops for fixtures, setup blocks, and alignment references

Machining and metal fabrication environments needing precise flat stock for jigs

Prototype shops and DIY workshops for custom fixtures and form tools

Die making, stamping, and forming applications requiring hardened, flat stock

Educational labs and training spaces for hands-on precision grinding and measurement practice