Drill Rod Tool Steels 81175499 Flat Stock 4142

Product Description

The DRILL ROD TOOL STEELS 81175499 is a pre hardened alloy steel flat stock bar conforming to AISI/SAE Type 4142 specification. It measures 36 inches long, 3/8 inch wide, and 3/16 inch thick, and weighs 0.71 pounds. Pre hardened 4142 chromoly alloy steel offers a strong balance of toughness, fatigue resistance, and machinability, making this flat stock suitable for fabricating tooling components, jigs, fixtures, brackets, and wear parts. Machinists, tool and die makers, and maintenance technicians work with this material in shop and field applications where a ready-to-use hardened flat bar is required without additional heat treatment.

This flat stock is suited for light-duty tooling, machine components, and structural fabrication tasks where a compact cross-section and pre hardened condition reduce setup time. The 3/16 inch thickness and 3/8 inch width make it appropriate for narrow slots, keyways, shims, and small structural ties in industrial and maintenance environments. Sold in single-piece quantity with a minimum order quantity of one.

Key Features

• AISI/SAE Type 4142 chromoly alloy steel with pre hardened condition for immediate use
• Length tolerance of plus 0.250 inches ensures stock runs long, never short
• Width tolerance of plus 0.005 inches for consistent fitment in close-tolerance applications
• Thickness tolerance of plus 0.001 inches supports precise layering and shimming work
• Square tolerance of 0.003 inches maintains cross-section geometry for accurate machining
• Single-piece packaging with MOQ of one allows ordering exact quantities needed

Compatibility

Designed as a standard AISI/SAE Type 4142 pre hardened alloy steel flat stock suitable for general tooling, fixture, and machine component fabrication applications across industrial and maintenance trades.

Installation Notes

Cutting, drilling, and grinding of pre hardened 4142 alloy steel requires carbide-tipped tooling and appropriate coolant to prevent work hardening and tool damage. Welding of pre hardened alloy steel should follow qualified preheat and post-weld heat treatment procedures per applicable shop standards. Always wear appropriate PPE including eye protection and gloves when cutting or grinding steel stock. Consult applicable OSHA and shop safety guidelines before machining.