Value Collection 403316BR Hex Head Cap Screw 7/8-9

Product Description

The VALUE COLLECTION 403316BR is a hex head cap screw designed for general-purpose mechanical fastening in structural and industrial assemblies. It is sized at 7/8-9 UNC thread with a 3-1/4 inch length under head and features partial threading along the shank. Manufactured from Grade 2 steel with a zinc-plated finish, this fastener provides corrosion resistance suitable for indoor and light-duty outdoor applications. It is driven with a 1-5/16 inch hex key or wrench. Maintenance technicians, millwrights, and mechanical contractors commonly install this type of fastener across a wide range of equipment and structural connections.

This hex head cap screw is suited for residential and commercial mechanical applications where a standard-strength, inch-series UNC fastener is specified. Typical uses include equipment mounting, framing connections, machinery assembly, and general mechanical repairs. The partially threaded shank allows for a grip length that resists shear loading at the joint, making it appropriate for bolted connections where the shank bears against mating surfaces. Sold in multiples of 10, it is well suited for job-lot and bulk fastener procurement.

Key Features

• 7/8-9 UNC thread size with 3-1/4 inch length under head for deep-grip bolted connections
• Partially threaded shank provides shear resistance at the joint interface
• Grade 2 steel construction meets general-purpose mechanical strength requirements
• Zinc-plated finish offers corrosion resistance for indoor and light outdoor environments
• 1-5/16 inch hex drive is compatible with standard open-end, box-end, and socket wrenches
• Inch-series UNC thread standard ensures broad hardware compatibility

Compatibility

Designed as a standard inch-series UNC hex head cap screw compatible with any 7/8-9 tapped hole or matching hex nut in general mechanical, structural, and equipment fastening applications.

Installation Notes

Installation is typically performed by millwrights, maintenance mechanics, or general contractors using a standard socket or open-end wrench sized at 1-5/16 inches. Verify that the mating thread is 7/8-9 UNC before installation to avoid cross-threading. De-energize and lock out any equipment being serviced before installing or removing fasteners per applicable OSHA lockout/tagout procedures. Do not substitute Grade 2 fasteners in applications that specify Grade 5 or Grade 8 hardware.