Value Collection D39225 Hex Head Cap Screw 1-8x6 Grade 8

Product Description

The VALUE COLLECTION D39225 is a partially threaded hex head cap screw designed for high-strength fastening applications. It is manufactured from Grade 8 steel with a zinc yellow dichromate finish that provides corrosion resistance in demanding environments. The fastener measures 1-8 thread size with a 6-inch length under head, conforming to ASME B18.2.1 dimensional standards. The UNC thread form ensures broad compatibility with standard inch-series tapped holes and nuts. This screw is suited for mechanical assemblies, structural connections, and equipment fabrication work where Grade 8 tensile strength is required.

This cap screw is used in industrial maintenance, mechanical contracting, and trade fabrication settings where high-strength inch-series fasteners are specified. The partial threading allows for a smooth shank section beneath the head, which is common in bolted joint assemblies where shear load transfer or precise clamping length is required. Typical applications include equipment mounting, structural steel connections, and heavy-duty machinery assembly in both commercial and industrial environments.

Key Features

• Grade 8 steel construction delivers high tensile and proof load strength for demanding fastening applications
• Zinc yellow dichromate finish provides corrosion resistance over bare steel
• Partially threaded shank for shear-load-capable bolted joint designs
• UNC thread standard ensures compatibility with standard inch-series hardware
• Conforms to ASME B18.2.1 for dimensional consistency and interchangeability
• 1-8 thread size x 6-inch length under head for long-reach fastening requirements

Compatibility

Designed for use with standard inch-series UNC Grade 8 hex nuts, flat washers, and tapped holes conforming to ASME B18.2.1 specifications in mechanical and structural assemblies.

Installation Notes

Installation is typically performed by millwrights, ironworkers, pipefitters, or mechanical contractors working on structural or equipment assemblies. Confirm mating nut and tapped hole thread class before installation. Grade 8 fasteners should be tightened using a calibrated torque wrench in accordance with applicable joint design specifications and relevant industry standards. Do not use impact tools at full power without controlling final torque to the engineered specification.