1/8″ X 4 1/2″ X 18″ Starrett Precision Ground Flat Stock AISI O-1 Oil Hardened Steel 54011 Fresh Stock

1/8″ X 4 1/2″ X 18″ Starrett Precision Ground Flat Stock | AISI O-1 Oil Hardened Steel | 54011 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 flat stock provides a consistent reference surface for fixtures and jigs

Oil-hardened O-1 steel offers a balanced combination of machinability and hardness

One piece construction minimizes flex and eliminates seam-related defects during machining

Suitable for milling, drilling, grinding, and shaping operations where a hardened base is required

Predictable edge retention and wear characteristics after heat treatment

Specifications

Material: AISI O-1 oil-hardened steel

Finish: Precision ground

Type: Flat stock

Thickness: 1/8 inch

Width: 4 1/2 inches

Length: 18 inches

Hardness (typical): Rockwell C 63-65 after oil hardening

Surface: Precision ground for flatness and repeatable fixturing

Dimensions: 1/8 inch thick, 4 1/2 inches wide, 18 inches long

Weight: not specified

Applications

Toolmaking and die making for custom tooling components

Fixture and jig manufacturing in metalworking shops

Prototyping and small-batch production where hardened stock is advantageous

Educational labs and DIY fabrication where consistent flat stock is needed