Value Collection 207829B Hex Head Cap Screw 5/16-18 X 1-1/4 in

Product Description

The VALUE COLLECTION 207829B is a 5/16-18 hex head cap screw measuring 1-1/4 inches under the head, manufactured from 18-8 stainless steel with a fully threaded UNC shank. This fastener follows the inch system of measurement and is designed for general mechanical assembly, structural joining, and equipment fabrication where corrosion resistance is required. The 1/2-inch hex drive allows installation with standard wrenches or sockets. Electricians, plumbers, HVAC technicians, and general maintenance professionals commonly use fasteners of this type when securing panels, brackets, and mechanical components in corrosive or moisture-prone environments.

This screw is suited for both light commercial and residential trade applications where stainless steel fasteners are specified for longevity. Typical use cases include mounting equipment enclosures, securing ductwork brackets, attaching pipe hangers, and general MRO assembly work. The UNC thread form is the most widely compatible inch-standard coarse thread, making this fastener easy to source matching nuts and threaded inserts. These screws are sold in multiples of 100 units per order.

Key Features

• 18-8 stainless steel construction provides corrosion and oxidation resistance in wet or outdoor environments
• Fully threaded shank maximizes thread engagement across the entire fastener length
• UNC coarse thread standard ensures broad compatibility with standard nuts, inserts, and tapped holes
• 1/2-inch hex head accepts standard wrenches, ratchets, and nut drivers
• Inch measurement system with 5/16-18 thread size and 1-1/4-inch length under head

Compatibility

Designed as a standard inch-series UNC hex head cap screw compatible with any 5/16-18 tapped hole, nut, or threaded insert following ASME B18.2.1 or equivalent coarse-thread specifications.

Installation Notes

Installation requires a 1/2-inch wrench, socket, or nut driver. Always ensure the mating thread is clean and free of debris before driving the fastener. Do not overtorque stainless steel fasteners, as galling can occur — applying an anti-seize compound to the threads is recommended practice when working with stainless-to-stainless connections. Power down or de-energize any equipment before accessing fastener locations on live electrical or mechanical assemblies.