5/16″ X 1″ X 18″ Starrett Oversize Precision Ground Flat Stock AISI O-1 Oil Hardened Steel 56990 Limited Time

5/16″ X 1″ X 18″ Starrett Oversize Precision Ground Flat Stock | AISI O-1 Oil Hardened Steel | 56990 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.

Solid bar form provides stable base for milling, drilling, and shaping tasks

Precision ground flat surfaces ensure reference accuracy and squareness

O-1 oil hardened steel combines good wear resistance with ease of cutting and machining

Oversize dimensions allow final machining to tight tolerances without changing base layout

Suitable for toolmaking, fixture components, clamps, and custom jigs

Specifications

Material: AISI O-1 oil hardened steel

Stock type: Oversize precision ground flat stock

Dimensions: 5/16 inch by 1 inch by 18 inches

Stock form: solid flat bar with flat, ground faces

Applications

Tool and die shops for fixture bases, custom jaws, and reference surfaces

Machine shops and fabrication facilities for spacers, shims, and square stock reference blocks

Prototype development and DIY machining projects requiring rigid, machinable stock