Value Collection -33710-2 Hex Socket Cap Screw 7/8-9 Unc

Product Description

The VALUE COLLECTION -33710-2 is a hex socket cap screw designed for high-strength fastening applications in mechanical assemblies, industrial equipment, and structural fixtures. It features a 7/8-9 UNC thread size with a 7-inch length under head and is partially threaded for proper clamping load distribution. Manufactured from alloy steel with a black oxide coating, this fastener delivers corrosion resistance and reduced surface reflectivity. The 3/4-inch hex drive size is compatible with standard hex keys and socket drivers. It conforms to ASME/ANSI B18.3 and ASTM A574 standards, making it suitable for demanding load-bearing installations.

This screw is used in a wide range of industrial and mechanical applications where a recessed hex drive is preferred for flush or countersunk installations. Common uses include machine tool assemblies, heavy equipment fabrication, structural steel connections, and fixture mounting. The partially threaded shank provides a bearing surface that resists shear forces in close-tolerance bored holes. It is appropriate for both original equipment manufacturing and field repair work performed by machinists, millwrights, and maintenance technicians.

Key Features

• 7/8-9 UNC thread size for compatibility with standard coarse-thread nuts and tapped holes
• 7-inch length under head accommodates thick stack assemblies and deep clearance bores
• Partially threaded shank improves shear resistance in precision applications
• Alloy steel construction provides high tensile strength per ASTM A574
• Black oxide finish offers mild corrosion resistance and low-glare appearance
• 3/4-inch hex drive accepts standard hex keys and socket drive tools

Compatibility

Designed as an OEM-style replacement or stock fastener for industrial assemblies requiring 7/8-9 UNC coarse-thread hex socket cap screws conforming to ASME/ANSI B18.3 and ASTM A574 specifications.

Installation Notes

Installation should be performed by qualified machinists, millwrights, or maintenance technicians using a properly sized 3/4-inch hex key or socket driver. Ensure the mating tapped hole or nut is clean and free of debris before threading to avoid cross-threading or galling. De-energize or lock out all equipment per applicable OSHA lockout/tagout procedures before fastener installation or removal. Do not substitute a smaller drive tool, as doing so risks rounding the socket recess.