Value Collection 3557406 O-1 Tool Steel Round 1-1/4 in X 3 Ft

Product Description

The VALUE COLLECTION 3557406 is a decarb-free O-1 oil-hardening tool steel round bar intended for precision toolmaking, die work, and machining applications where surface integrity is critical. O-1 tool steel is an oil-hardening grade known for its good dimensional stability during heat treatment and its ability to hold a fine edge after hardening. The decarb-free designation means the surface layer has not lost carbon content during the manufacturing process, so the material machines and hardens predictably right to the outer diameter without requiring extra stock removal to reach sound metal. The bar measures 1-1/4 inches in diameter and 3 feet in overall length, and weighs approximately 14.3 pounds.

This round bar is suited for tool and die shops, machine shops, and maintenance departments fabricating punches, dies, gauges, bushings, and similar precision components. The stock length format makes it practical for cutting to size on a bandsaw or cold saw before turning, milling, or grinding to final dimensions. The close diameter tolerance of plus 0.005 to minus 0.015 inches supports consistent setups on lathes and surface grinders without requiring excessive cleanup passes.

Key Features

• Decarb-free surface ensures consistent carbon content from outer diameter through core
• O-1 oil-hardening grade provides good wear resistance and dimensional stability during heat treat
• Diameter tolerance of plus 0.005 to minus 0.015 inches for predictable machining setups
• 3-foot stock length suitable for cutting multiple blanks from a single bar
• 1-1/4 inch diameter accommodates a wide range of punch, bushing, and die applications

Compatibility

Designed as a stock-length tool steel round bar for general toolmaking and machining applications requiring O-1 oil-hardening grade material in a 1-1/4 inch diameter round profile.

Installation Notes

Cutting, turning, and grinding of tool steel should be performed by a qualified machinist using appropriate feeds, speeds, and coolant for the grade. Heat treatment of O-1 steel requires controlled atmosphere or salt-bath equipment to maintain the decarb-free condition through hardening and tempering. Always wear appropriate PPE when cutting or grinding steel bar stock. Consult the material data sheet for recommended hardening and tempering temperatures before processing.