Drill Rod Tool Steels 81175408 4142 Alloy Steel Flat Stock

Product Description

The DRILL ROD TOOL STEELS 81175408 is a pre hardened alloy steel flat stock bar conforming to AISI/SAE Type 4142 specification. Measuring 36 inches long, 6 inches wide, and 0.125 inches thick, this flat stock ships at 7.61 pounds and is ready for use without additional heat treatment. The 4142 chromium-molybdenum alloy composition delivers a strong balance of toughness, fatigue resistance, and machinability in the hardened condition. Machinists, tool and die makers, and fabricators working in production shops or maintenance environments install and machine this material for a wide range of structural and mechanical components.

This flat stock is suited for applications where pre hardened steel is required to reduce post-machining heat treat operations. Common uses include fixture plates, die components, wear plates, tooling blanks, and structural machine parts. The 4142 alloy grade is widely specified in both light industrial and heavy manufacturing environments where reliable strength and dimensional consistency are required. Sold as a single piece per package.

Key Features

• AISI/SAE Type 4142 chromium-molybdenum alloy steel in pre hardened condition
• Dimensions: 36 inches long x 6 inches wide x 0.125 inches thick
• Length tolerance: +0.250 inches / -0.000 inches
• Width tolerance: +0.005 inches / -0.000 inches
• Thickness tolerance: +0.001 inches
• Square tolerance: 0.003 inches

Compatibility

Designed as a general-purpose pre hardened flat stock for use in tooling, fixture, and structural fabrication applications requiring AISI/SAE 4142 alloy steel.

Installation Notes

Machining or cutting of pre hardened 4142 steel should be performed by qualified machinists using tooling rated for hardened alloy steels. Carbide cutting tools are typically required for accurate material removal. Avoid welding pre hardened material without consulting appropriate preheat and post-weld heat treatment procedures, as weld-zone properties can be significantly altered. Always follow applicable shop safety standards and wear appropriate PPE when cutting or grinding.