Value Collection NS01121218 O1 Tool Steel Flat Stock

Product Description

The VALUE COLLECTION NS01121218 is an O1 oil-hardening tool steel flat stock bar used in toolmaking, die work, punches, gauges, and general machining applications where a through-hardened result is required. The bar measures 0.5 inches thick, 0.5 inches wide, and 18 inches long, and meets ASTM A-681 material specification. At 1.28 pounds, it is a compact, single-piece stock suitable for bench machining, surface grinding, or heat-treat work. Thickness tolerance is plus or minus 0.001 inches, making it appropriate where close dimensional control before hardening is needed. Machinists, toolmakers, and die makers are the primary users of this type of stock.

O1 tool steel flat stock of this size is commonly used in small tool and die shops, maintenance and repair operations, and prototype toolmaking environments. It is well suited for fabricating small punches, blades, scrapers, and fixture components that will be oil-quench hardened after machining. The 18-inch length allows for multiple parts to be cut from a single bar, reducing material waste on short-run jobs. This stock is intended for professional machining environments where dimensional consistency and material traceability are required.

Key Features

• O1 oil-hardening tool steel, ASTM A-681 compliant
• 0.5 inches thick by 0.5 inches wide cross-section for small tooling and fixture work
• 18-inch length allows multiple pieces to be cut from one bar
• Thickness tolerance of plus or minus 0.001 inches for close pre-grind fit
• Width tolerance of 0.0000 to 0.0050 inches
• Length tolerance of plus 0.250 inches
• Single-piece packaging, minimum order quantity of 1

Compatibility

Designed as a direct replacement for MSC part number 76132000. Suitable for general O1 tool steel flat stock applications conforming to ASTM A-681 requirements.

Installation Notes

O1 tool steel flat stock is machined, ground, and cut to final shape before heat treatment. Wear appropriate PPE when cutting or grinding. Oil quenching should be performed by qualified personnel following established heat-treat procedures for O1 tool steel. Handle bar stock carefully to avoid nicks or surface damage that could affect dimensional tolerance or hardening results.