Value Collection 451196BR Hex Head Cap Screw 5/8-18x12 Grade 8

Product Description

The VALUE COLLECTION 451196BR is a partially threaded hex head cap screw designed for high-strength bolted connections in demanding mechanical and structural applications. Manufactured from Grade 8 steel with a bright uncoated finish, this fastener meets ASME B18.2.1 dimensional standards. The 5/8-18 UNF thread designation indicates a fine-thread pattern suited for precision fastening where vibration resistance and load-bearing capacity are critical. At 12 inches under the head, this is a long-reach fastener appropriate for through-bolt applications in heavy equipment, industrial machinery, and structural assemblies. Installation requires a 15/16-inch hex wrench or socket.

This cap screw is used in industrial, mechanical, and structural installations where Grade 8 strength ratings are specified by design or code. Typical applications include equipment mounting, machinery frames, heavy-duty fixtures, and structural steel connections. The fine UNF thread pattern makes it well-suited for use in tapped holes where maximum thread engagement is needed or where the assembly is subject to dynamic loads. Machinists, millwrights, ironworkers, and maintenance technicians are the primary installers of fasteners in this class.

Key Features

• Grade 8 steel construction for high tensile and proof load strength
• 5/8-18 UNF fine-thread pattern for vibration-resistant fastening
• Partially threaded shank allows unthreaded grip length for shear applications
• 12-inch length under head suits deep through-bolt and long-reach applications
• Bright uncoated finish meets ASME B18.2.1 dimensional standards
• 15/16-inch hex drive compatible with standard sockets and wrenches

Compatibility

Designed as a standard ASME B18.2.1 inch-series hex head cap screw suitable for any application specifying a 5/8-18 UNF Grade 8 partially threaded fastener.

Installation Notes

Installation should be performed by qualified mechanical or structural tradespeople following applicable codes and engineer-of-record specifications. De-energize and lock out all affected equipment before fastener installation or removal. Use a calibrated torque wrench to achieve the specified clamp load for Grade 8 fasteners as defined by the applicable design specification or fastener torque table. Do not reuse fasteners that show signs of galling, corrosion, or thread damage.