Value Collection D39196 Hex Cap Screw 7/8-9 X 2.5 in Grade 8

Product Description

The VALUE COLLECTION D39196 is a Grade 8 steel hex head cap screw with a 7/8-9 UNC thread and a 2.5-inch length under head. It carries a zinc yellow dichromate finish for corrosion resistance and is partially threaded along the shank. This fastener meets ASME B18.2.1 and SAE J429 standards, making it suitable for high-strength bolted connections in mechanical, structural, and industrial applications. Tradespeople and maintenance technicians working on heavy equipment, structural assemblies, or industrial machinery will recognize Grade 8 as the appropriate choice when joint integrity under high load or vibration is required.

This cap screw is used in applications demanding high tensile strength and reliable clamping force. Partial threading along the shank is standard for applications where the unthreaded grip length must align with the thickness of the clamped material. Typical install scenarios include equipment frames, machinery mounts, heavy-duty structural connections, and any bolted joint where Grade 5 hardware does not meet the load requirements.

Key Features

• Grade 8 steel construction — rated for high-strength bolted connections subject to heavy load and vibration
• 7/8-9 UNC thread — standard coarse thread for broad tool and nut compatibility
• Partially threaded shank — grip section aligns with clamped material thickness for proper joint geometry
• Zinc yellow dichromate finish — provides a corrosion-inhibiting barrier suitable for general industrial environments
• Meets ASME B18.2.1 and SAE J429 dimensional and mechanical property standards

Compatibility

Designed as a standard 7/8-9 UNC hex head cap screw for use with any Grade 8-rated hex nut or tapped hole conforming to ASME B18.2.1 and SAE J429 specifications.

Installation Notes

Installation is performed by maintenance technicians, millwrights, or mechanical contractors using standard hex wrenches or impact tooling sized for a 7/8-9 fastener. Always confirm the mating nut or tapped hole is rated for Grade 8 loads before torquing. Follow applicable torque tables from the fastener manufacturer or relevant ASME standards for the joint material and lubrication condition. Do not mix Grade 8 fasteners with lower-grade nuts or hardware in the same joint.