Hillman Fasteners 810509 3/8-16 Hex Nut Galvanized 100 Pack

Product Description

The HILLMAN FASTENERS 810509 is a 100-pack of 3/8-16 coarse thread hex nuts finished with a hot dip galvanized coating. Each nut features a tapered oversize profile, which accommodates the added zinc thickness from the galvanizing process and ensures proper thread engagement on galvanized bolts and threaded rod. These nuts are a standard fastener choice for outdoor, structural, and corrosive-environment applications where long-term corrosion resistance is required. Plumbers, electricians, HVAC installers, and general construction trades rely on galvanized hex nuts for equipment mounting, pipe strut work, and equipment support frames exposed to moisture or weather.

These 3/8-16 hex nuts are suited for residential and commercial construction, mechanical equipment mounting, pipe hanger systems, and outdoor structural assemblies. The coarse thread pattern is the standard for general-purpose fastening and works with 3/8-16 galvanized bolts, all-thread rod, and carriage bolts. The tapered oversize specification is required when mating with hot dip galvanized externally threaded fasteners, as standard nuts will not engage correctly after coating.

Key Features

• Hot dip galvanized finish provides heavy-duty corrosion resistance for outdoor and wet environments
• Tapered oversize profile designed specifically for use with hot dip galvanized bolts and threaded rod
• 3/8-16 coarse thread — the most common thread spec for general structural fastening
• 100-pack quantity reduces downtime on multi-connection jobs
• Hex drive accepts standard wrenches and socket sets

Compatibility

Designed for use with 3/8-16 hot dip galvanized bolts, carriage bolts, and all-thread rod. The tapered oversize specification is required for proper fit on externally hot dip galvanized fasteners and is not intended as a direct replacement for standard zinc-plated or uncoated 3/8-16 nuts.

Installation Notes

Installation is performed by mechanical, electrical, plumbing, or general construction trades as part of equipment support and structural fastening work. Verify that mating bolts or threaded rod carry the same hot dip galvanized finish and 3/8-16 coarse thread designation before installation. Use a properly sized wrench or socket to achieve a snug, secure fit. Follow applicable building and mechanical codes for structural fastener torque and connection requirements.