Value Collection D39498 Hex Head Cap Screw 7/8-14x3 Grade 8

Product Description

The VALUE COLLECTION D39498 is a 7/8-14 hex head cap screw designed for high-strength fastening applications in industrial, mechanical, and structural assembly work. Manufactured from Grade 8 steel with a zinc yellow dichromate finish, this fastener delivers superior tensile strength and corrosion resistance compared to lower-grade hardware. The screw measures 3 inches under the head with partial threading and a 7/8-14 UNF thread form. It conforms to ASME B18.2.1 and SAE J429 standards, making it a code-compliant choice for demanding fastener applications.

This hex head cap screw is suited for heavy-duty mechanical assemblies, equipment mounting, and structural connections where Grade 8 strength is specified. Partially threaded shanks are common in applications requiring a bearing surface or where clamp load distribution across unthreaded sections is needed. Trades such as millwrights, pipefitters, and industrial maintenance technicians regularly install Grade 8 cap screws in machinery, brackets, flanges, and structural steel connections. The zinc yellow dichromate finish provides a layer of corrosion protection appropriate for general indoor and light industrial environments.

Key Features

• Grade 8 steel construction for high tensile and proof load strength
• 7/8-14 UNF thread form for fine-thread engagement and vibration resistance
• 3-inch length under head with partial threading for bearing-surface applications
• Zinc yellow dichromate finish for corrosion resistance in light industrial use
• Meets ASME B18.2.1 and SAE J429 dimensional and mechanical standards

Compatibility

Designed as a standard Grade 8 hex head cap screw for use in any application specifying a 7/8-14 UNF partially threaded fastener per ASME B18.2.1 and SAE J429.

Installation Notes

Installation should be performed by qualified mechanical or maintenance technicians familiar with fastener torque specifications for Grade 8 hardware. Always consult applicable torque tables or engineering specifications for the specific joint being assembled. Inspect threads on both the screw and mating nut or tapped hole before installation to ensure clean engagement. Follow relevant codes and assembly standards for the equipment or structure being serviced.