Drill Rod Tool Steels 81173601 4142 Alloy Steel Flat Stock

Product Description

The DRILL ROD TOOL STEELS 81173601 is a pre-hardened alloy steel flat stock bar conforming to AISI/SAE Type 4142 specification. It measures 18 inches long, 1 inch wide, and 3/16 inch thick, and weighs approximately 0.95 pounds. Type 4142 is a chromium-molybdenum alloy steel known for high tensile strength, toughness, and good machinability in the pre-hardened condition. This flat stock is intended for use by machinists, tool and die makers, and industrial fabricators who require a reliable, ready-to-use steel bar with tight dimensional tolerances straight from stock.

This flat stock is suited for applications in tool making, jigs and fixtures, machine components, and general industrial fabrication where a pre-hardened alloy steel is required. The pre-hardened condition eliminates the need for additional heat treatment in many applications, making it a practical choice for shops working to reduce lead time on tooling and structural components. It is typically used in both light manufacturing and production machine shop environments.

Key Features

• AISI/SAE Type 4142 chromium-molybdenum alloy steel for high strength and toughness
• Pre-hardened condition - no additional heat treatment required for most applications
• Tight length tolerance of plus 0.125 inch for predictable stock sizing
• Width tolerance of plus 0.005 inch and thickness tolerance of plus 0.001 inch for dimensional consistency
• Square tolerance of 0.003 inch ensures accurate 90-degree edges
• Single-piece minimum order quantity - no bulk commitment required

Compatibility

Designed as a standard flat stock bar for use in general machining, tool and die, and industrial fabrication applications requiring AISI/SAE Type 4142 pre-hardened alloy steel in an 18 inch by 1 inch by 3/16 inch profile.

Installation Notes

Cutting, drilling, and machining of pre-hardened alloy steel should be performed by qualified machinists using appropriate tooling rated for hardened materials. Carbide-tipped tooling is typically recommended for cutting and milling operations. Always wear appropriate personal protective equipment when cutting or grinding steel stock. Consult applicable shop safety standards and material safety data for handling steel bar stock.