Drill Rod Tool Steels 81176729 4142 Flat Stock 36x2.5x0.625

Product Description

The DRILL ROD TOOL STEELS 81176729 is a pre-hardened alloy steel flat stock bar conforming to AISI/SAE Type 4142 specification. It measures 36 inches long, 2.5 inches wide, and 0.625 inches thick, with a finished weight of 15.86 pounds. Type 4142 is a chromium-molybdenum alloy steel known for high tensile strength, good toughness, and resistance to wear and fatigue. The pre-hardened condition means this stock arrives ready for machining, fabrication, or tooling applications without requiring additional heat treatment. Machinists, tool and die makers, and general fabricators typically work with this material in production and job-shop environments.

This flat stock is suited for a wide range of industrial and tooling applications where strength and dimensional stability are required. Common uses include machine components, dies, fixtures, jigs, guide rails, and structural tooling elements. The AISI/SAE 4142 alloy designation makes this material a standard choice when chromium-molybdenum properties are called for in medium-to-heavy fabrication work. It is appropriate for both production runs and one-off custom fabrication in machine shops, maintenance facilities, and manufacturing plants.

Key Features

• AISI/SAE Type 4142 chromium-molybdenum alloy steel for high strength and toughness
• Pre-hardened condition reduces need for additional heat treatment prior to use
• Tight width tolerance of plus 0.005 inches for consistent fit in close-tolerance applications
• Thickness tolerance held to plus 0.001 inches for precise dimensional control
• Square tolerance of 0.003 inches ensures perpendicularity for accurate machining setups
• Single-piece minimum order quantity for flexibility in low-volume and prototype work

Compatibility

Designed as a standard AISI/SAE Type 4142 pre-hardened alloy steel flat stock for use in general machining, tool and die, and industrial fabrication applications where chromium-molybdenum alloy flat bar stock is specified.

Installation Notes

Handling and cutting of hardened alloy steel flat stock should be performed by qualified machinists or fabricators using appropriate metalworking equipment. Carbide or high-speed tooling is recommended when machining pre-hardened 4142 material. Always use proper personal protective equipment including eye protection and gloves when cutting or grinding. Consult applicable facility safety standards and material data sheets before beginning work.