5/16″ X 5/8″ X 18″ Starrett Precision Ground Flat Stock AISI O-1 Oil Hardened Steel 58725 Popular

5/16″ X 5/8″ X 18″ Starrett Precision Ground Flat Stock | AISI O-1 Oil Hardened Steel | 58725 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 surfaces for flatness and squareness to support repeatable machining setups

Oil hardened tool steel provides wear resistance and edge retention during fabrication tasks

Rectangular flat stock suitable for fixtures, jigs, and setup blocks

Consistent cross-section enables reliable reference surfaces along the entire length

Versatile machining compatibility supports milling, drilling, and grinding operations

Specifications

Material: AISI O-1 oil hardened steel

Thickness: 5/16 inch

Width: 5/8 inch

Length: 18 inch

Shape: Rectangular flat stock

Finish: Precision ground

Dimensions: 5/16 inch thick, 5/8 inch wide, 18 inch long

Material state: Oil hardened steel (AISI O-1)

Package quantity: 1 piece

Applications

Ideal for: Machine shops, tooling rooms, fabrication shops

Primary uses: Fixture construction, die and jig fabrication, alignment references

Practical applications: Provides a reliable flat reference surface for setup, alignment, and machining operations