Starrett 54959 C1018 Steel Flat Stock 5/16x4x24 in

Product Description

The STARRETT 54959 is a low carbon steel flat stock bar cut to 24 inches long, 4 inches wide, and 5/16 inch thick. It is manufactured to AISI Type C1018 material specification, a widely used low carbon steel grade valued for its machinability, weldability, and consistent mechanical properties. This flat stock ships as a single piece and is suited for fabrication, repair, and tooling applications across metalworking, industrial maintenance, and trade shop environments. The piece weighs 8.5 pounds. Dimensional tolerances are held tight: thickness and squareness are controlled to plus or minus 0.001 inch, width tolerance is held to plus 0.000 to 0.005 inch, and length tolerance is plus 0.625 inch.

This flat stock is used in job shop fabrication, maintenance repair operations, and general metalworking applications where a consistent, machinable low carbon steel bar is required. It is appropriate for brackets, supports, jigs, fixtures, and structural weldments in light industrial and commercial settings. Machinists, millwrights, welders, and maintenance technicians regularly work with C1018 flat bar in both production and field repair contexts. The 24-inch length provides a manageable stock size for bench work and manual machining operations.

Key Features

• AISI Type C1018 low carbon steel for reliable machinability and weldability
• Thickness tolerance of plus or minus 0.001 inch for consistent fit in precision applications
• Width tolerance of plus 0.000 to 0.005 inch
• Length tolerance of plus 0.625 inch
• Square tolerance held to plus or minus 0.001 inch
• Single-piece packaging with a minimum order quantity of 1

Compatibility

Designed as a standard AISI C1018 low carbon steel flat bar suitable for general fabrication, repair, and machining applications where this material grade and size are specified.

Installation Notes

Cutting, drilling, welding, and machining of steel flat stock should be performed by qualified metalworkers or tradespeople using appropriate personal protective equipment. Deburr all cut edges before handling or fitting into assemblies. Follow applicable shop safety practices and local codes when welding or grinding. Verify final dimensions against your application drawing before cutting to finished length.