Drill Rod Tool Steels 81174260 Flat Stock 18x0.5x0.375 in

Product Description

The DRILL ROD TOOL STEELS 81174260 is a pre hardened alloy steel flat stock bar conforming to AISI/SAE Type 4142 specification. Measuring 18 inches long, 0.5 inches wide, and 0.375 inches thick, this flat stock is supplied in a pre hardened condition suitable for applications requiring consistent hardness and dimensional accuracy. It weighs 0.95 pounds per piece. Machinists, tool and die makers, and industrial maintenance technicians use this material for jigs, fixtures, tooling components, wear plates, and other precision mechanical parts where close tolerances and material toughness are required.

This flat stock is suited for light fabrication and machining shops handling tool steel work, as well as maintenance departments that need a ready-to-use pre hardened bar without additional heat treat steps. The 4142 alloy chemistry delivers good strength, toughness, and fatigue resistance, making it a practical choice for moderate-impact tooling and machine components in both small-batch and production environments. It ships as a single piece per package unit.

Key Features

• AISI/SAE Type 4142 alloy steel in pre hardened condition - no additional heat treating required
• Nominal dimensions: 18 inches long x 0.5 inches wide x 0.375 inches thick
• Length tolerance: +0.125 inches / -0.000 inches
• Width tolerance: +0.005 inches / -0.000 inches
• Thickness tolerance: +0.001 inches / -0.000 inches
• Square tolerance: 0.003 inches

Compatibility

Designed as a general-purpose pre hardened flat stock bar for use in tooling, fixturing, and precision machining applications where AISI/SAE Type 4142 alloy steel material is specified.

Installation Notes

Cutting and machining of pre hardened alloy steel requires carbide or high-speed tooling rated for hardened material. Use appropriate personal protective equipment and machine guarding when sawing or milling this bar stock. Welding pre hardened 4142 steel requires pre-heat and post-weld heat treatment per applicable welding procedures to avoid cracking. Consult applicable shop standards and material safety data before processing.