Value Collection C50000151 Hex Head Cap Screw Grade 8

Product Description

The VALUE COLLECTION C50000151 is a heavy-duty hex head cap screw engineered for demanding structural and mechanical fastening applications. Built to Grade 8 steel specifications, it delivers high tensile strength where standard fasteners fall short. The screw measures 1-1/2 inches in diameter with 6 threads per inch (UNC thread standard) and a 5-inch length under head. Threading is partial, following ASME B18.2.1 dimensional standards. This fastener is supplied uncoated and is installed by millwrights, maintenance mechanics, structural assemblers, and heavy equipment technicians working across industrial, construction, and commercial settings.

This cap screw is suited for high-load bolted connections in steel fabrication, heavy machinery assembly, agricultural equipment, and structural frameworks. The large 1-1/2-inch diameter and 5-inch length make it appropriate for thick-section joints requiring maximum clamping force. Partial threading is standard for grip-length applications where the unthreaded shank must span a joint interface without thread interference.

Key Features

• Grade 8 steel construction for high tensile and proof load strength
• 1-1/2-6 UNC thread size with partial threading for proper grip-length fitment
• 5-inch length under head accommodates thick-section assemblies
• Conforms to ASME B18.2.1 dimensional standard for consistent tooling compatibility
• Uncoated finish suitable for use with standard hardened washers and heavy hex nuts

Compatibility

Designed as a standard UNC-thread hex head cap screw per ASME B18.2.1, compatible with Grade 8 or equivalent heavy hex nuts and hardened flat washers sized for 1-1/2-inch fasteners.

Installation Notes

Installation should be performed by qualified mechanics or millwrights familiar with high-strength fastener torque requirements per applicable engineering specifications. Always use a calibrated torque wrench and hardened washers under both the head and nut. De-energize and lock out all equipment before working on any bolted assembly. Do not mix Grade 8 fasteners with lower-grade nuts or non-hardened washers, as this can compromise joint integrity.