3/8″ X 1 1/4″ X 18″ Starrett Precision Ground Flat Stock AISI O-1 Oil Hardened Steel 54120 Top Rated

3/8″ X 1 1/4″ X 18″ Starrett Precision Ground Flat Stock | AISI O-1 Oil Hardened Steel | 54120 is Starrett precision ground flat stock, supplied ground flat, square and parallel in aisi o-1 oil hardened steel so it goes straight into layout, fixturing and machining work without further surfacing.

One piece solid flat stock suitable for machining, forming, and fixturing

O-1 oil hardened steel delivers improved wear resistance and edge retention during repeated tooling tasks

Precision ground surface supports accurate setups and consistent flatness across workpieces

Good dimensional stability under machining pressures, allowing reliable gaging and alignment

Straightforward to machine, shape, and finish for custom tooling, dies, or fixtures

Specifications

Material: AISI O-1 oil hardened steel

Form: Precision ground flat stock

Thickness: 3/8 inch

Width: 1 1/4 inch

Length: 18 inch

Overall dimensions: 3/8 inch thick × 1 1/4 inch wide × 18 inch long

Surface finish: Precision ground flat stock

Configuration: Single, continuous piece

Applications

Machining shops and toolmaking for fixtures, jigs, and dies

Metal fabrication and stamping environments requiring hardened tool steel stock

Prototype development, custom tooling, and maintenance workshops