Value Collection 451077PR Hex Head Cap Screw 3/8-16x8 Grade 8

Product Description

The VALUE COLLECTION 451077PR is a 3/8-16 hex head cap screw designed for high-strength fastening applications in industrial, mechanical, and structural assemblies. Manufactured from Grade 8 steel with a bright uncoated finish, this fastener delivers the tensile strength required for demanding load-bearing connections. The screw measures 8 inches under the head and features partial threading with a Unified National Coarse (UNC) thread form, conforming to ASME B18.2.1 dimensional standards. It is driven with a 9/16-inch hex wrench or socket. Maintenance technicians, millwrights, and general contractors install this type of fastener where high-strength steel hardware is specified.

This cap screw is suited for mechanical equipment mounting, structural steel connections, and heavy-duty fabrication work where Grade 8 strength is required. The partially threaded shank provides a smooth bearing surface in the grip area, which is important in bolted joints where shear load is a factor. The UNC thread form is the standard choice for most carbon steel structural and mechanical fastening in North American applications. MOQ is 10 pieces; package quantity is 1 per package.

Key Features

• Grade 8 steel construction for high tensile and proof load strength
• 3/8-16 UNC thread form per ASME B18.2.1 standard
• 8-inch length under head with partial threading for shear-capable bolted joints
• Bright uncoated finish suitable for indoor mechanical and structural use
• 9/16-inch hex key drive compatible with standard sockets and wrenches

Compatibility

Designed as a standard 3/8-16 UNC hex head cap screw for use in any application requiring ASME B18.2.1 compliant Grade 8 fasteners with an 8-inch grip length.

Installation Notes

Installation is performed with a 9/16-inch socket or open-end wrench; a torque wrench is recommended for any joint with a specified clamp load. Grade 8 fasteners should always be paired with Grade 8 or hardened nuts and washers to prevent thread stripping or bearing surface damage. Ensure mating threads are clean and free of debris before assembly. Follow applicable structural or mechanical codes for joint design and fastener torque requirements.