Starrett 54134 O1 Tool Steel Flat Stock 3/8x10x18 in

Product Description

The STARRETT 54134 is an O1 oil-hardening tool steel flat stock bar measuring 3/8 inch thick, 10 inches wide, and 18 inches long. Manufactured to AISI Type O1 specifications, this flat stock is used as raw material for fabricating punches, dies, gauges, jigs, and cutting tools. The close-tolerance ground finish holds a thickness tolerance of plus or minus 0.001 inches, making it suitable for precision toolmaking applications where dimensional accuracy matters before hardening. At 19.12 pounds per piece, the stock is ready for machining, annealing, and subsequent oil-quench heat treatment by a qualified toolmaker or machinist.

O1 tool steel flat stock is a standard material in toolrooms, job shops, and maintenance departments. This particular size, 3/8 inch by 10 inches by 18 inches, suits medium-format die plates, fixture bases, and blanking tooling. The 10-inch width accommodates wide die or fixture blanks without requiring a weld or splice. It is typically sourced by toolmakers, machinists, and industrial maintenance technicians who machine the stock to net shape before heat treatment.

Key Features

• AISI Type O1 oil-hardening tool steel for consistent heat-treat response
• Thickness tolerance of plus or minus 0.001 inches for tight dimensional control
• Width tolerance of 0.000 to minus 0.015 inches
• Length tolerance of plus 0.250 inches, minus 0 inches
• Edge squareness held to 0.003 inches per inch on all edges
• Ready-to-machine annealed condition prior to oil quench hardening

Compatibility

Designed as a general-purpose O1 tool steel flat stock suitable for toolroom, die-making, and precision fixture fabrication applications where AISI Type O1 oil-hardening material is specified.

Installation Notes

Machining and heat treatment of tool steel flat stock should be performed by qualified toolmakers or machinists familiar with AISI O1 material properties. Follow established shop practices for annealing, rough machining, stress relieving, and oil-quench hardening sequences. Grinding operations after hardening require adequate coolant to prevent surface tempering. Personal protective equipment including eye protection and heat-resistant gloves is required during heat treatment operations.