Value Collection D39484 Hex Head Cap Screw 3/4-16 X 6 in Grade 8

Product Description

The VALUE COLLECTION D39484 is a 3/4-16 UNF hex head cap screw designed for high-strength fastening applications in industrial, mechanical, and structural assemblies. Manufactured from Grade 8 steel with a zinc yellow dichromate finish, this fastener delivers the corrosion resistance and tensile strength required for demanding service environments. The screw measures 6 inches under the head and is partially threaded, providing a smooth shank section for improved shear strength and precise clamping in close-tolerance joints. Licensed tradespeople and industrial maintenance technicians working with heavy equipment, agricultural machinery, or structural steel regularly specify Grade 8 hardware for critical connections.

This cap screw is suited for use in high-load bolted joints where a fine-thread UNF pitch is required to maximize clamp load and resist vibration loosening. The 3/4-16 thread size is common in precision mechanical assemblies, hydraulic system mounts, and heavy equipment frames. The partial threading makes this screw appropriate for through-bolt applications where the shank spans unthreaded material before engaging a nut or tapped bore. It meets ASME B18.2.1 dimensional standards and SAE J429 mechanical property requirements, confirming suitability for safety-critical and load-bearing fastener positions.

Key Features

• Grade 8 steel construction for high tensile strength in demanding load-bearing applications
• 3/4-16 UNF fine thread for maximized clamp load and superior vibration resistance
• 6-inch length under head with partial threading to preserve shank integrity across unthreaded material
• Zinc yellow dichromate finish provides corrosion protection in mild to moderate service environments
• Meets ASME B18.2.1 dimensional standards and SAE J429 mechanical property requirements

Compatibility

Designed as a standard 3/4-16 UNF Grade 8 hex head cap screw compatible with any application requiring ASME B18.2.1 and SAE J429 compliant fasteners of this thread size and length.

Installation Notes

Installation should be performed by qualified maintenance technicians or tradespeople familiar with high-strength fastener torque requirements for Grade 8 hardware. De-energize, depressurize, or otherwise isolate the assembly before disassembly or fastener replacement. Use a calibrated torque wrench and follow the joint designer's specified torque values for the application. Inspect mating threads and bearing surfaces for damage before installation to avoid false torque readings or joint failure.