Value Collection 99148 Hex Head Cap Screw 5/8-11 Grade 8

Product Description

The VALUE COLLECTION 99148 is a fully threaded hex head cap screw sized 5/8-11 x 1-3/4 inches, manufactured from Grade 8 steel with an uncoated finish. Grade 8 steel delivers high tensile strength, making this fastener suitable for heavy-duty bolted joints in industrial, mechanical, and structural assemblies. The Unified National Coarse (UNC) thread profile and full threading along the shank provide maximum thread engagement across the clamped length. This screw conforms to ASME B18.2.1 dimensional standards and is installed by millwrights, maintenance technicians, and mechanical contractors working on machinery, equipment frames, and structural connections.

This cap screw is used in applications that demand a high-strength fastener in standard inch sizing. Typical install scenarios include equipment mounting, fixture assembly, and mechanical joint work in both light industrial and heavy commercial settings. The 5/8-11 UNC thread size is a common pitch in North American machinery, and the 1-3/4 inch grip length suits moderate stack-height joint configurations. Sold in packages of 25 units, this fastener is stocked for maintenance, repair, and operations (MRO) use.

Key Features

• Grade 8 steel construction for high tensile and proof load strength
• 5/8-11 UNC thread — standard inch coarse pitch for broad tool and hardware compatibility
• Fully threaded shank provides maximum thread engagement at 1-3/4 inches under head
• Uncoated finish — suitable for use as-is or with applied thread-locking or anti-seize compounds
• Conforms to ASME B18.2.1 dimensional standard
• Packaged in quantities of 25 for MRO and assembly use

Compatibility

Designed as an OEM-style replacement or maintenance fastener for any bolted assembly specifying a 5/8-11 UNC x 1-3/4 inch Grade 8 hex head cap screw per ASME B18.2.1.

Installation Notes

Installation is performed by qualified mechanical technicians or millwrights using a standard hex socket or open-end wrench sized for a 5/8-11 hex head. Always de-energize and lock out equipment before replacing or torquing fasteners in live machinery. Follow the equipment manufacturer's torque specification for the joint; do not use torque values from this listing. Apply thread-locking compound or anti-seize only as specified by the assembly procedure.