Value Collection 99201 Hex Head Cap Screw 7/8-9 Grade 8

Product Description

The VALUE COLLECTION 99201 is a 7/8-9 hex head cap screw designed for heavy-duty fastening applications in industrial, mechanical, and structural assemblies. Measuring 4-1/2 inches under the head with a 7/8-9 UNC thread pattern, this fastener is manufactured from Grade 8 steel and left uncoated for standard bare-metal installations. The partial threading design provides a stronger grip in clamped joint applications where full thread engagement is not required. Compliance with ASME B18.2.1 and SAE J429 ensures dimensional accuracy and minimum tensile strength requirements are met. Licensed trades and maintenance professionals will find this screw suitable for high-load, high-torque fastening work.

This cap screw is suited for use in heavy equipment assembly, structural steel connections, machinery repair, and general industrial maintenance where a Grade 8 fastener is specified. The 7/8-9 UNC thread is a common coarse-thread pitch used across a wide range of manufactured equipment and fabricated assemblies. Sold in a package quantity of 25 per order, it is well suited for contractors and service shops that need job-lot quantities on hand.

Key Features

• Grade 8 steel construction meets SAE J429 minimum tensile strength requirements
• 7/8-9 UNC coarse thread pattern for broad compatibility with standard tapped holes
• 4-1/2 inches under head length suits deep-reach clamping and through-bolt applications
• Partially threaded shank provides stronger shear resistance in bolted joints
• Uncoated finish allows for field application of anti-seize, threadlocker, or customer-specified coatings
• Manufactured to ASME B18.2.1 dimensional standards for consistent fit and interchangeability

Compatibility

Designed as a standard 7/8-9 UNC hex head cap screw for use in any application requiring a Grade 8 fastener at 4-1/2 inches under-head length per ASME B18.2.1 specifications.

Installation Notes

Installation should be performed by a qualified mechanic or tradesperson using a properly sized socket or open-end wrench rated for Grade 8 torque values. Always consult the equipment manufacturer torque specifications or a standard fastener torque table for the appropriate clamp load based on thread size and lubrication condition. Inspect the mating tapped hole or nut for thread damage before installation. Do not substitute a lower-grade fastener in applications that specify Grade 8.