
Enclosure Fasteners

Hoffman Tamper-Resistant Screws are designed for field installation on screw cover pull boxes and screw cover Type 3R enclosures, pushbutton enclosures, consolets and Type 12 screw cover wiring troughs. Each package includes four Type 18-8 stainless steel screws and four nylon captivating washers.
Hoffman Clamping Nuts fit into mounting channels that are used on the inside walls of Hoffman enclosures. They are included with all Hoffman accessories that attach to mounting channels and can be used for mounting other equipment (brackets, etc.) to the enclosure walls. Each package contains twenty plated clamping nuts with top-grip nut retainers.
Hoffman Fasteners are used to mount 19 inch rack equipment to 9 mm square holes in uprights. Each package includes a set of 8 cage nuts (M6) and screws (M6x16).
Hoffman PROLINE Fasteners are used to fasten components to the grid system. PGF Packages include 20 front-loading clip nuts (M6) and 20 combination-drive washer-head bolts (M6). Grounding Packages are used with the rectangular holes in the PROLINE frame to provide electrical continuity between the frame and the grid system. ASM5T Packages are used with the round holes in the PROLINE frames and include 20 M5 self-tapping screws.
Products
Cutouts are very common when modifying enclosures for push buttons, indication lights, conduit entries or mounting hardware. Cutting into an enclosure runs the risk of eliminating the protective nature of the NEMA rated attributes. Proper steps must be followed in order to preserve the NEMA rating of an enclosure.
Devices mounted to the enclosure must have the same NEMA rating as the enclosure. This means that if the devices are installed to the manufacturer's specifications, they will be able to maintain the NEMA rating of the enclosure.
Water tight conduit hubs must be used when running wire through a cutout in an enclosure. There are many different types of conduit hubs that are used to secure conduit to an enclosure. However, only certain conduit hubs are rated for a watertight seal. By using water tight hubs, the NEMA rating of the enclosure is maintained.
Bonded washers are necessary when mounting hardware to an enclosure. If standard mounting hardware is used, the NEMA rating of the enclosure will no longer be maintained. Bonded washers have rubber gaskets that make a watertight seal around the drilled hole. It is also important to make sure the material used for the bonded washer matches the material of the enclosure. Stainless steel enclosures require stainless steel bonded washers.