Value Collection -33710-5 Hex Socket Cap Screw 7/8-9 Unc

Product Description

The VALUE COLLECTION -33710-5 is a hex socket cap screw designed for high-strength fastening applications in mechanical assemblies, fabrication, and industrial maintenance. It features a 7/8-9 UNC thread size with a 5-inch length under the head and is partially threaded for proper load-bearing engagement. The screw is made from alloy steel with a black oxide finish, providing corrosion resistance and a clean, low-reflectance appearance. Drive size is 3/4 inch hex, requiring a standard hex key or socket driver. This fastener meets ASME/ANSI B18.3 and ASTM A574 standards. It is installed by machinists, maintenance mechanics, and fabricators working with bolted assemblies requiring high tensile strength and precise torque control.

This cap screw is suited for use in machinery frames, structural brackets, jigs, fixtures, and heavy equipment assemblies where a recessed drive fastener is preferred over a hex head bolt. The partial threading engages full thread depth through a tapped hole or nut while leaving a smooth shank for shear load applications. This SKU is sold in a minimum order quantity of 5 pieces, with 1 piece per package unit, making it appropriate for MRO sourcing and small-batch production runs.

Key Features

• 7/8-9 UNC thread size for common imperial tapped hole applications
• 5-inch length under head accommodates thick material stacks or deep clearance holes
• Partially threaded shank provides shear strength and clean seating against mating surfaces
• Alloy steel construction delivers high tensile and proof load ratings per ASTM A574
• Black oxide finish reduces surface corrosion and minimizes light reflection in exposed assemblies
• 3/4-inch hex drive compatible with standard hex keys and socket drive tooling

Compatibility

Designed as a standard ASME/ANSI B18.3 hex socket cap screw for use in any application with a 7/8-9 UNC tapped hole requiring a 5-inch partially threaded fastener in alloy steel.

Installation Notes

Installation is performed by machinists or maintenance mechanics using a calibrated torque wrench and a 3/4-inch hex bit or Allen key. Ensure the mating tapped hole is clean and free of debris before threading. Do not exceed the recommended torque for the fastener grade and material being clamped. Apply thread lubricant or anti-seize compound as required by the assembly specification.