Drill Rod Tool Steels 81175317 4142 Flat Stock 36in

Product Description

The DRILL ROD TOOL STEELS 81175317 is a pre hardened alloy steel flat bar cut to 36 inches long, 1.5 inches wide, and 0.125 inches thick. Conforming to AISI/SAE Type 4142 specification, this chromium-molybdenum alloy delivers elevated strength and wear resistance straight from stock, eliminating the need for additional heat treating before use. At 1.9 pounds per bar, it is well suited for machine shops, toolmakers, and fabricators who need a consistent, ready-to-machine blank for fixtures, jigs, wear plates, and tooling components. Tight dimensional tolerances are held at the mill, making this stock suitable for precision applications where dimensional control matters.

This flat stock is used in general industrial and precision machining environments where AISI 4142 pre hardened material is specified. Typical applications include fabricating machine components, dies, mold components, guide rails, and structural tooling fixtures. Because the material arrives pre hardened, it is ready for finish machining, grinding, or direct installation into assemblies without post-processing heat treatment. Machinists and toolmakers working in job shops, production facilities, or maintenance departments will find this a standard raw material stock item.

Key Features

• AISI/SAE Type 4142 chromium-molybdenum alloy steel, pre hardened for immediate use
• 36 inches long x 1.5 inches wide x 0.125 inches thick nominal dimensions
• Length tolerance of plus 0.250 inches ensures adequate stock for cut-to-length operations
• Width tolerance of plus 0.005 inches and thickness tolerance of plus 0.001 inches support tight-fit machining
• Square tolerance held to 0.003 inches for consistent cross-section geometry
• Ships as a single bar with a minimum order quantity of one piece

Compatibility

Designed as a standard raw material flat stock bar conforming to AISI/SAE Type 4142 alloy steel specification, suitable for general toolmaking, fixture fabrication, and machining applications where pre hardened chromium-molybdenum steel stock is required.

Installation Notes

Cutting, drilling, and grinding of pre hardened 4142 alloy steel requires carbide tooling and appropriate speeds and feeds for hardened material. Machinists should use coolant during operations to control heat buildup at the cutting edge. Welding of pre hardened stock is generally not recommended without consulting material specifications and following proper preheat procedures. Always wear appropriate PPE including eye protection and gloves when handling and machining steel flat stock.