Value Collection -33705-1 Hex Socket Cap Screw 7/8-9 Unc

Product Description

The VALUE COLLECTION -33705-1 is a fully threaded hex socket cap screw designed for high-strength fastening applications in industrial, mechanical, and structural assemblies. Manufactured from alloy steel with a black oxide finish, this screw delivers corrosion resistance and a clean, professional appearance. It features a 7/8-9 UNC thread size with 2 inches of length under the head, driven by a 3/4-inch hex socket. The black oxide coating provides moderate corrosion protection and reduces light reflection in precision or tooling environments. This fastener meets ASME/ANSI B18.3 and ASTM A574 standards, making it suitable for demanding load-bearing applications.

This cap screw is commonly used in machinery assembly, fixture fabrication, tooling plates, and general mechanical construction where a recessed drive fastener is required. The fully threaded shank provides maximum thread engagement throughout the grip length, making it well-suited for through-hole and tapped-hole installations in metal components. Machinists, millwrights, maintenance technicians, and fabricators regularly specify this fastener type for OEM equipment builds and field repairs alike.

Key Features

• 7/8-9 UNC thread form for broad compatibility with standard inch-series tapped holes
• 2-inch length under head with fully threaded shank for maximum engagement
• 3/4-inch hex socket drive for high-torque installation with standard hex keys or socket tooling
• Alloy steel construction rated to ASTM A574 for high tensile strength requirements
• Black oxide finish provides mild corrosion resistance and reduces galling tendency
• Meets ASME/ANSI B18.3 dimensional standards for consistent fitment

Compatibility

Designed as a standard inch-series socket cap screw for use in any application requiring a 7/8-9 UNC tapped hole with a 2-inch grip length. Verify thread class and hole depth before installation.

Installation Notes

Installation is performed by machinists, millwrights, or maintenance technicians using a 3/4-inch hex key or socket driver. Ensure the mating tapped hole is clean and free of debris before threading. De-energize and lock out any equipment before replacing fasteners on machinery in service. Apply appropriate thread lubricant or anti-seize compound when required by the assembly specification.