Starrett 55042 Steel Flat Stock 24x1.25x1 in C1018

Product Description

The STARRETT 55042 is a low carbon steel flat stock bar made to AISI Type C1018 specification. It measures 24 inches long, 1.25 inches wide, and 1 inch thick, and weighs 8.5 pounds. C1018 is a mild, machinable steel commonly used for shafts, keys, pins, brackets, and general fabrication work. Tolerances are held tight for reliable fit in precision assemblies: length tolerance is plus 0.625 inches, width tolerance is plus 0.000 to 0.005 inches, and both thickness and square tolerance are held to plus or minus 0.001 inches. Machinists, millwrights, maintenance technicians, and fabricators stock this bar for a wide range of lay-out, repair, and manufacturing tasks.

AISI C1018 flat bar is a workhorse material in light industrial, commercial, and maintenance environments. Its low carbon content keeps it weldable and machinable without special preheat procedures in most shop conditions. Typical applications include custom brackets, shim stock bases, slide ways, wear pads, and fixture components. The 1-inch thickness provides meaningful cross-section for load-bearing or structural support roles while still allowing straightforward milling, drilling, and turning operations on standard equipment.

Key Features

• AISI Type C1018 low carbon steel for good machinability and weldability
• 24-inch length with a plus 0.625-inch length tolerance
• Width tolerance of plus 0.000 to 0.005 inches for consistent fit
• Thickness and square tolerance of plus or minus 0.001 inches
• 1-inch thick cross-section suited for structural and mechanical applications
• Single-piece packaging with a minimum order quantity of 1

Compatibility

Designed as a general-purpose C1018 low carbon steel flat bar suitable for machining, fabrication, and maintenance applications where AISI C1018 material specification is required.

Installation Notes

Cutting, drilling, and welding of C1018 steel should be performed by qualified machinists or fabricators using appropriate tooling and personal protective equipment. Inspect the bar for squareness and verify tolerances against your application requirements before cutting to final length. Deburr all cut edges before assembly to avoid injury and interference fits. Follow applicable shop safety and welding codes when joining to other structural members.