Hillman Fasteners 810506 Hex Nut 5/16-18 Galvanized 100 Pack

Product Description

The HILLMAN FASTENERS 810506 is a 100-pack of 5/16-18 coarse thread hex nuts finished with a hot dip galvanized coating and manufactured to a tapered oversize specification. Hot dip galvanizing provides a thick zinc layer that resists corrosion in outdoor and high-moisture environments, making these nuts well suited for structural and mechanical fastening where long-term weather exposure is a concern. The tapered oversize tolerance is standard for hot dip galvanized hardware, accommodating the added coating thickness so the nut threads correctly onto standard galvanized or uncoated bolts. Installers in electrical, plumbing, HVAC, and general construction trades keep these on hand for routine field assembly.

These hex nuts are used in residential and light commercial construction, outdoor equipment mounting, mechanical supports, pipe hangers, conduit strut work, and similar applications where a zinc-coated fastener is specified. The 5/16-18 coarse thread size is one of the most common fastener sizes across trades and fits standard 5/16-18 threaded rod, bolts, and studs. The 100-unit pack quantity suits service trucks, shop stock, and jobsite fastener bins.

Key Features

• Hot dip galvanized finish for heavy-duty corrosion resistance in outdoor and wet environments
• Tapered oversize thread tolerance accommodates galvanizing coating thickness on mating fasteners
• 5/16-18 coarse thread — one of the most widely used fastener sizes across mechanical trades
• 100-unit pack supports bulk stocking for service vehicles and job sites
• Hex drive accepts standard wrenches and nut drivers for fast installation

Compatibility

Designed for use with standard 5/16-18 threaded bolts, machine screws, and threaded rod, particularly those with a hot dip galvanized or zinc-coated finish where tapered oversize mating hardware is required.

Installation Notes

These nuts are installed by licensed trades and general contractors using standard combination wrenches, adjustable wrenches, or nut drivers. When used in structural or load-bearing applications, consult applicable building codes and torque requirements for the fastener grade specified. Do not mix hot dip galvanized hardware with dissimilar metals in corrosive environments without accounting for galvanic compatibility. Inspect threads before installation to confirm they are free of debris or damage.