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The GREENLEE 31128 is a stainless steel knockout die sized at 0.73 inches, designed for use with compatible Greenlee knockout punch sets. Knockout dies work alongside a punch to cut clean, precise holes in electrical enclosures, panels, and junction boxes. The stainless steel construction provides corrosion resistance and long-term durability in demanding job site conditions. Licensed electricians and electrical contractors rely on this type of tooling for accurate hole sizing when installing conduit fittings, connectors, and other penetrations through sheet metal enclosures.
This die is suited for use in commercial and residential electrical work where precise knockout holes are required. It is commonly used when installing conduit through metal electrical panels, enclosures, switchgear cabinets, and similar sheet metal applications. The 0.73-inch diameter is a standard size for specific conduit fitting applications. Electrical contractors and maintenance technicians performing panel work will find this die fits into standard Greenlee knockout tooling workflows.
Designed as an OEM-style replacement or supplemental die for use with compatible Greenlee knockout punch sets that accept standard threaded draw studs.
Knockout dies are installed and operated by licensed electricians in accordance with NEC guidelines. Before performing any knockout work on an enclosure, ensure all electrical power to the panel or enclosure is shut off and locked out per LOTO procedures. Use the correct draw stud and punch combination as specified for this die size to avoid tool damage or injury. Inspect the die for wear or cracking before each use and replace if damaged.
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