Value Collection C50000156 Hex Head Cap Screw Grade 8

Product Description

The VALUE COLLECTION C50000156 is a fully threaded hex head cap screw sized 1-1/2-6 x 4 inches, manufactured from Grade 8 steel with a bright uncoated finish. It conforms to ASME B18.2.1 dimensional standards and uses a UNC thread form. Grade 8 steel provides high tensile strength, making this fastener suitable for heavy-duty bolted joints in structural, mechanical, and industrial applications. The hex head design accepts standard wrenches and impact drivers. Full threading along the 4-inch length under head allows engagement across the entire shank where needed.

This cap screw is used in applications requiring high-strength fastening in ferrous and non-ferrous assemblies. Typical installations include machinery frames, heavy equipment, structural steel connections, and fabricated assemblies where a UNC 1-1/2-6 thread pattern is specified. It is installed by mechanics, millwrights, pipefitters, and general tradespeople working to engineering drawings that call out Grade 8 or equivalent fastener ratings. The uncoated finish is appropriate for dry indoor environments or where a coating will be applied post-assembly.

Key Features

• Grade 8 steel construction for high tensile and proof load strength
• Fully threaded along the 4-inch length under head
• UNC thread form, 1-1/2-6 thread size
• Bright uncoated finish — compatible with field-applied coatings
• Meets ASME B18.2.1 dimensional standard
• Standard hex head accepts common wrenches and impact tools

Compatibility

Designed as a standard UNC hex head cap screw for any bolted joint or tapped hole specifying a 1-1/2-6 thread size and Grade 8 fastener per ASME B18.2.1.

Installation Notes

Installation is performed by qualified mechanics or tradespeople following applicable engineering specifications and torque tables for Grade 8 fasteners at this thread size. Always de-energize or lock out any equipment before fastener removal or replacement. Use calibrated torque tooling to reach the specified clamp load — do not estimate torque by feel on large-diameter fasteners. Inspect threads on both the fastener and the mating nut or tapped hole before assembly to confirm no damage or contamination.