Drill Rod Tool Steels 81176695 Alloy Steel Flat Stock

Product Description

The DRILL ROD TOOL STEELS 81176695 is a pre-hardened alloy steel flat stock bar made to AISI/SAE Type 4142 specification. It measures 36 inches long, 1-1/2 inches wide, and 5/8 inch thick, and weighs 9.52 pounds. Pre-hardened 4142 alloy steel offers high tensile strength, good toughness, and resistance to wear and fatigue, making it a reliable choice for machined components, tooling fixtures, and structural parts that require consistent hardness without additional heat treatment. Machinists, tool and die makers, and fabricators work with this stock on CNC mills, lathes, and surface grinders.

This flat stock is suited for industrial and commercial machining applications where a medium-carbon chromium-molybdenum alloy is specified. Typical uses include die components, shafts, pins, bolts, couplings, and general-purpose machine parts. The pre-hardened condition saves processing time by eliminating the need for a separate through-hardening operation before machining. It is appropriate for job shops, production machining environments, and tooling fabrication work requiring tight dimensional tolerances out of stock.

Key Features

• AISI/SAE Type 4142 chromium-molybdenum alloy steel for strength and toughness
• Pre-hardened condition eliminates additional heat treatment before machining
• Length tolerance of plus 0.250 inches for consistent oversize stock
• Width tolerance of plus 0.005 inches for predictable finish allowance
• Thickness tolerance of plus 0.001 inches for tight dimensional control
• Square tolerance of 0.003 inches ensures geometry accuracy across the bar

Compatibility

Designed as a general-purpose pre-hardened alloy flat bar conforming to AISI/SAE Type 4142 material specification, suitable for machining and fabrication applications where that alloy grade is required.

Installation Notes

This material is intended for machining, sawing, grinding, or fabrication by qualified machinists and tool and die professionals using appropriate metalworking equipment. Carbide or high-speed tooling is recommended when machining pre-hardened 4142 alloy steel. Secure workpieces properly before cutting or milling operations. Follow applicable shop safety standards and equipment manufacturer guidelines when processing hardened steel stock.