L H Dottie Co HPS512 Cup Die Set 5-1/2 Inch

Product Description

The L H DOTTIE CO HPS512 is a 5-1/2 inch cup die set used for punching clean, precise holes in electrical enclosures, junction boxes, conduit knockouts, and sheet metal panels. Cup die sets are a standard tool accessory for electricians and other trade professionals who need repeatable, burr-free knockout holes without torch cutting or step-drilling. This set is sold as a single unit and is designed to work with a standard knockout punch driver. The 5-1/2 inch cutting diameter makes it suited for larger conduit entries or fitting penetrations where a uniform hole edge is required.

Cup die sets of this size are commonly used in commercial and industrial electrical work where large conduit runs or fittings must penetrate enclosure walls or panel cabinets. Electricians and panel fabricators reach for this size when rougher field methods would compromise enclosure integrity or fitting seating. It is appropriate for use on standard-gauge steel enclosures and similar sheet metal assemblies.

Key Features

• 5-1/2 inch cutting diameter for large conduit or fitting knockouts
• Cup-style die design produces clean, burr-minimized hole edges
• Sold as a single unit (each)
• Compatible with standard knockout punch driver systems
• Designed for use on electrical enclosures, panel cabinets, and sheet metal

Compatibility

Designed as an OEM-style replacement or supplemental die for standard knockout punch driver systems that accept cup-style dies in a 5-1/2 inch cutting diameter.

Installation Notes

Installation of knockout dies should be performed by a qualified electrician following applicable NEC guidelines. De-energize and lock out any enclosure before punching holes in live panels or boxes. Use the appropriate draw stud and punch driver rated for the die size to avoid die cracking or workpiece deformation. Inspect the die edges before each use and replace if chipping or wear is observed.