Value Collection 99149 Hex Cap Screw 5/8-11 X 2 in Grade 8 25pk

Product Description

The VALUE COLLECTION 99149 is a 5/8-11 hex head cap screw machined from Grade 8 steel with no finish coating applied. It measures 2 inches under the head and is fully threaded along the entire shank length. Grade 8 steel provides high tensile and proof load strength, making this fastener appropriate for demanding structural and mechanical assemblies. The coarse UNC thread form seats and torques predictably in standard tapped holes and heavy hex nuts. This part is sold in a package quantity of 25 and conforms to ASME B18.2.1 dimensional standards. Maintenance technicians, millwrights, and mechanical contractors are the primary installers.

This cap screw is suited for general industrial, commercial, and trade applications where a high-strength inch-series fastener is required. Typical uses include equipment mounting, structural connections, machinery assembly, and bracket installation in HVAC, plumbing, electrical, and mechanical system work. The 5/8-11 UNC thread size is one of the most common heavy-duty inch fastener sizes found in trade environments. The fully threaded shank allows engagement across the full usable length of the bolt, which can be advantageous in thinner material connections or where full-length thread engagement is specified.

Key Features

• Grade 8 steel construction for high proof load and tensile strength in structural applications
• Fully threaded shank provides maximum thread engagement along the entire bolt length
• 5/8-11 UNC coarse thread form for reliable seating in standard tapped holes and heavy hex nuts
• Uncoated finish — no plating or coating that could affect dimensional tolerances or conductivity
• Conforms to ASME B18.2.1 for consistent hex head dimensions and thread form
• Packaged in quantities of 25 to support job-lot purchasing

Compatibility

Designed as a standard inch-series hex head cap screw for use with 5/8-11 UNC tapped holes and compatible heavy hex nuts in general mechanical, structural, and trade assembly applications.

Installation Notes

Installation should be performed by qualified mechanical or trade personnel following applicable torque specifications for Grade 8 fasteners as referenced in engineering standards or equipment documentation. Always inspect the mating threads for damage or contamination before installation. Do not substitute thread lubricants or anti-seize compounds unless specified by the equipment manufacturer, as these affect achieved clamp load at a given torque value. Never install a fastener into a damaged or misaligned tapped hole.