Drill Rod Tool Steels 81176547 4142 Flat Stock 36x4x0.5in

Product Description

The DRILL ROD TOOL STEELS 81176547 is a pre-hardened alloy steel flat stock bar conforming to AISI/SAE Type 4142 specification. It measures 36 inches long by 4 inches wide by 0.5 inches thick and ships at approximately 20.3 pounds. Pre-hardened 4142 alloy steel offers a balanced combination of toughness, strength, and wear resistance, making it suitable for tooling, fixtures, machine components, and structural fabrication where through-hardened stock is required without additional heat treatment. Machinists, tool-and-die makers, and fabricators work with this material in job shops and manufacturing facilities.

This flat stock is used in applications requiring a high-strength alloy steel with predictable machinability. Typical uses include jig plates, fixture components, punches, dies, shafts, and general-purpose tooling blanks. The pre-hardened condition reduces the need for post-machining heat treatment in many moderate-load applications. Suitable for both prototype and production work where close-tolerance flat bar stock is specified.

Key Features

• AISI/SAE Type 4142 alloy steel, pre-hardened for immediate use without additional heat treatment
• Dimensions: 36 inches long x 4 inches wide x 0.5 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 for consistent flat and parallel surfaces

Compatibility

Designed as a standard AISI/SAE Type 4142 pre-hardened alloy steel flat bar suitable for tooling, fixture, and general machining applications where this material specification is called out.

Installation Notes

Cutting and machining of pre-hardened alloy steel requires carbide or high-speed steel tooling rated for hardened stock. Secure the workpiece firmly in a vise or fixture before cutting, drilling, or milling. Welding pre-hardened 4142 steel requires pre-heat and post-weld procedures to avoid cracking - consult applicable AWS welding standards before attempting weld operations. Wear appropriate PPE including eye protection and gloves when cutting or grinding.