3/8″ X 4 1/2″ X 18″ Starrett Precision Ground Flat Stock AISI O-1 Oil Hardened Steel 54128 Special Discount

3/8″ X 4 1/2″ X 18″ Starrett Precision Ground Flat Stock | AISI O-1 Oil Hardened Steel | 54128 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.

Precision ground surface maintains flatness and squareness across the length

Single-piece construction provides dimensional stability during machining

AISI O-1 tool steel with oil-hardened heat treatment balances hardness and machinability

Versatile blank for toolmaking, fixtures, jigs, blades, and custom components

Ready-to-machine stock suitable for mills, lathes, and grinders

Specifications

Material: AISI O-1 oil-hardened steel

Form: precision ground flat stock

Dimensions: Thickness 3/8 inch; Width 4.5 inches; Length 18 inches

Finish: precision ground

Stock type: flat stock

Packaging: 1 piece per order

Applications

Metalworking shops and machine shops

Tool and die making

Fabrication and assembly environments

Prototype labs and makerspaces

Educational facilities for machinist training