Proto J86058 Cold Chisel 5/8 X 7-5/8 Inch

Product Description

The PROTO J86058 is a cold chisel designed for cutting, shaping, and breaking metal and masonry materials. Built on a 5/8-inch stock size, this chisel is a standard hand-tool-trade staple used to cut unhardened metal, remove welds, split fasteners, and chip concrete or block. At 0.42 pounds, it is light enough for extended single-hand use while maintaining the mass needed for effective impact transfer from a ball-peen or engineer's hammer. Licensed tradespeople and maintenance technicians across plumbing, HVAC, electrical, and general mechanical trades keep cold chisels on hand as a fundamental part of their toolkit.

The J86058 is suited for residential and commercial maintenance applications where metal or masonry needs to be cut or shaped without power tools. Common install and repair scenarios include removing seized fasteners, cutting through conduit knockouts, splitting corroded nuts, and chipping away grout or mortar. It is a single-use hand-strike tool, not intended for use in a chipper hammer or pneumatic holder.

Key Features

• 5/8-inch stock size for controlled cutting width on metal and masonry
• 7-5/8-inch overall length provides adequate grip and handle clearance from the strike zone
• Lightweight at 0.42 pounds for reduced fatigue during repetitive use
• Cold chisel geometry engineered for unhardened metal cutting and masonry chipping
• Single-piece construction for reliable impact transfer

Compatibility

Designed as a general-purpose cold chisel suitable for use across mechanical, plumbing, electrical, and HVAC trade applications where hand-strike metal or masonry work is required.

Installation Notes

Cold chisels should be used with a ball-peen or engineer's hammer rated for the task — never use a claw hammer for striking. Wear ANSI-rated safety glasses at all times when striking a cold chisel, as metal chips and fragments are a serious eye hazard. Inspect the chisel head before each use and discard if mushrooming is present on the strike face. No power-down or lockout procedure is required for most applications, but always confirm the work area is clear of energized conductors before striking near electrical systems.