Drill Rod Tool Steels 81175747 4142 Flat Stock 36in

Product Description

The DRILL ROD TOOL STEELS 81175747 is a pre-hardened alloy steel flat bar cut to 36 inches long, 0.5 inches wide, and 0.25 inches thick. Manufactured to AISI/SAE Type 4142 specification, this chromium-molybdenum alloy steel delivers a balance of strength, toughness, and wear resistance in the pre-hardened condition. It ships in a ready-to-machine state, reducing the need for additional heat treatment before use. Machinists, toolmakers, and fabricators use this stock for dies, fixtures, jigs, shafts, and other precision components where dimensional stability and material consistency matter. Weight is 1.27 pounds per piece.

AISI/SAE 4142 pre-hardened flat stock is well suited for both job-shop and production environments. Typical applications include tooling plates, wear pads, machine components, and structural fixtures in light industrial settings. The flat bar format simplifies layout and sawing operations, making it a practical starting point for milled or ground tool components. This stock is commonly used in machine shops, maintenance and repair operations, and custom fabrication where a high-strength alloy steel is specified.

Key Features

• AISI/SAE Type 4142 chromium-molybdenum alloy steel in pre-hardened condition
• Ready to machine without additional heat treatment
• Length tolerance of plus 0.25 inches for consistent oversize stock
• Width tolerance of plus 0.005 inches for predictable finishing allowance
• Thickness tolerance of plus 0.001 inches for tight dimensional control
• Square tolerance of 0.003 inches for reliable flatness and squareness

Compatibility

Designed as a general-purpose pre-hardened alloy steel flat bar suitable for tooling, fixture, and machine component applications requiring AISI/SAE 4142 material specification.

Installation Notes

This flat bar stock is intended for cutting, milling, drilling, or grinding by qualified machinists and fabricators using appropriate metalworking equipment. Carbide tooling is recommended when machining pre-hardened 4142 alloy steel. Operators should follow standard shop safety practices including eye protection, chip guarding, and proper workholding. Additional heat treatment after machining should only be performed by personnel familiar with alloy steel hardening procedures.