Drill Rod Tool Steels 57944 O1 Flat Stock 7/16x1/2x36in

Product Description

The DRILL ROD TOOL STEELS 57944 is an O1 oil-hardening tool steel flat bar cut to 7/16 inches thick, 1/2 inches wide, and 36 inches long. O1 is a general-purpose oil-hardening tool steel valued for its dimensional stability during heat treatment, good wear resistance, and ease of machining in the annealed state. This flat stock ships in the soft, annealed condition ready for machining, grinding, and subsequent hardening by a tool and die maker, machinist, or maintenance technician who requires precise, repeatable stock for tooling applications.

O1 flat stock in this size range is a standard choice for making punches, dies, jigs, fixtures, gauges, and small machine parts in job shops, tool rooms, and maintenance departments. The 36-inch length provides a full working bar suitable for multiple parts. The 7/16 by 1/2 inch cross section suits light-to-medium duty tooling applications where close dimensional tolerances are required before and after heat treat.

Key Features

• AISI Type O1 oil-hardening tool steel - machines cleanly in the annealed state and responds predictably to oil-quench hardening
• Thickness tolerance of plus or minus 0.001 inches for close-tolerance tooling work
• Width tolerance of plus 0.005 inches, minus 0.000 inches ensures stock is never undersize
• Length tolerance of plus 0.5 inches provides a full net usable length of 36 inches
• Squareness held to 0.003 inches on edges and 0.004 inches per inch of thickness on ends
• Weighs 2.27 pounds per bar - easy to handle and stage at the workbench

Compatibility

Designed as a standard AISI Type O1 oil-hardening tool steel flat bar suitable for general tool room, die shop, and maintenance machining applications requiring annealed flat stock in this cross section.

Installation Notes

Machining and hardening of tool steel flat stock is performed by qualified machinists or toolmakers familiar with AISI O1 heat treatment procedures. Follow established shop safety practices when cutting, grinding, or heat treating tool steel, including appropriate PPE for grinding sparks and hot quench oil. Oil quenching produces flammable vapors - ensure adequate ventilation and fire suppression in the heat treat area. Consult the material specification sheet for recommended hardening temperatures and quench media before processing.