Value Collection DA.375X02.0X36 4140 Steel Flat Bar

Product Description

The VALUE COLLECTION DA.375X02.0X36 is a 4140 alloy steel flat bar supplied in a pre-hardened condition, ready for machining or fabrication without additional heat treatment. Measuring 0.375 inches thick, 2 inches wide, and 36 inches long, this bar stock is well suited for applications requiring high tensile strength, toughness, and wear resistance. The 4140 specification indicates a chromium-molybdenum alloy steel that responds predictably to machining operations. Machinists, tool and die makers, and fabricators working in industrial, manufacturing, and maintenance environments commonly use this stock for shafts, fixtures, tooling plates, and structural components where dimensional stability and material hardness are critical.

This flat bar is appropriate for general-purpose industrial machining and fabrication tasks in both shop and field environments. The pre-hardened condition eliminates the need for in-house heat treating before use, making it practical for lower-volume or one-off jobs. Typical applications include jig and fixture components, machine parts, wear plates, and support brackets where standard mild steel does not provide adequate strength or wear resistance.

Key Features

• 4140 chromium-molybdenum alloy steel for high tensile strength and toughness
• Pre-hardened condition — no additional heat treatment required before use
• Flat bar profile simplifies layout, clamping, and milling operations
• 36-inch length provides full usable stock for a range of part sizes
• Consistent cross-section at 0.375 inches thick by 2 inches wide for predictable material removal

Compatibility

Designed as a general-purpose 4140 pre-hardened alloy steel flat bar suitable for use in industrial machining, fabrication, and tooling applications where chromium-molybdenum alloy steel bar stock is specified.

Installation Notes

Cutting and machining of pre-hardened 4140 alloy steel requires carbide tooling rated for hardened stock; high-speed steel tooling may wear prematurely. Secure workpieces firmly before cutting or milling operations to prevent movement and ensure dimensional accuracy. When welding 4140, consult applicable welding procedure specifications, as pre-hardened alloy steels typically require preheat to reduce the risk of heat-affected zone cracking. Follow all applicable shop safety practices, including eye protection and chip management, when machining this material.