5/16″ X 4″ X 18″ Starrett Oversize Precision Ground Flat Stock AISI O-1 Oil Hardened Steel 56996 Top Pick

5/16″ X 4″ X 18″ Starrett Oversize Precision Ground Flat Stock | AISI O-1 Oil Hardened Steel | 56996 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.

Oversize stock provides extra material for finishing operations, reducing rework

Precision ground faces ensure true flatness for accurate milling, drilling, or grinding

AISI O-1 steel is oil hardened for improved wear resistance and edge stability

Suitable for knife blanks, tooling, jigs, fixtures, and custom fabrication projects

Machinable with standard shop equipment to meet tight tolerances

Specifications

Material: AISI O-1 oil hardened tool steel

Stock type: Oversize precision ground flat stock

Dimensions: 5/16 inch thick x 4 inch wide x 18 inch long

Finish: Precision ground flat faces

Form: Rectangular flat stock with uniform cross-section

Cross-section: 5/16 inch thick by 4 inch wide

Length: 18 inch

Heat treatment: Oil hardened to standard O-1 specification

Applications

Metal fabrication and shop floor tooling

Tool and die making

Knife making and blade development

Jig, fixture, and gauge production

Prototype work in machine shops and fabrication facilities