Value Collection MS16997-85 Hex Socket Cap Screw 5/16-18

Product Description

The VALUE COLLECTION MS16997-85 is a partially threaded hex socket cap screw designed for secure, high-strength fastening in mechanical and structural assemblies. Built to ASME B18.3 standards, this screw features a 5/16-18 UNC thread size and a 2.25 inch length under head. It is manufactured from 4037 grade alloy steel and finished with a yellow cadmium plating that provides corrosion resistance in demanding service environments. The 1/4 inch hex drive socket requires a standard hex key or Allen driver. This fastener is appropriate for use by maintenance technicians, millwrights, and mechanical contractors working on industrial, HVAC, and equipment assembly applications.

This cap screw is suited for use in both light industrial and commercial mechanical assemblies where a strong, recessed-drive fastener is required. The partial threading engages a tapped hole or nut across the lower portion of the shank, leaving a smooth shank section near the head for shear load applications. Common install scenarios include equipment panels, mounting brackets, compressor housings, and mechanical enclosures requiring a clean, flush-head profile.

Key Features

• 5/16-18 UNC thread for broad compatibility with standard tapped holes and hardware
• 2.25 inch length under head accommodates moderate material stack-ups
• Partial threading provides shear-load capacity along the unthreaded shank section
• 4037 alloy steel construction delivers high tensile strength for demanding fastening applications
• Yellow cadmium plating offers corrosion resistance in industrial environments
• Meets ASME B18.3 fastener standard for dimensional and mechanical conformance

Compatibility

Designed as a standard ASME B18.3 hex socket cap screw suitable for use in any application requiring a 5/16-18 UNC partially threaded cap screw with a 1/4 inch hex drive.

Installation Notes

Installation requires a 1/4 inch hex key or Allen-drive bit rated for the fastener torque requirements of the assembly. Ensure the mating tapped hole is clean and free of debris before driving the screw. Follow the equipment manufacturer torque specifications for the application — do not over-torque alloy steel fasteners in aluminum or soft metal housings. Cadmium-plated fasteners should be handled according to applicable safety guidelines, as cadmium compounds require proper handling precautions.