Value Collection MS16997-87 Hex Socket Cap Screw 5/16-18

Product Description

The VALUE COLLECTION MS16997-87 is a partially threaded hex socket cap screw engineered for high-strength fastening applications. It features a 5/16-18 UNC thread size and measures 2.75 inches in length under the head. Drive engagement is through a 1/4-inch internal hex socket, compatible with standard hex keys and socket drivers. The screw is manufactured from 4037 alloy steel and finished with a yellow cadmium plating, which provides corrosion resistance and a visual inspection indicator. This fastener meets ASME B18.3 dimensional standards, making it a reliable choice for precision mechanical assemblies, MRO applications, and industrial maintenance work.

This cap screw is suited for use in mechanical, industrial, and maintenance environments where a partially threaded socket head fastener is required. The 5/16-18 UNC coarse thread pattern offers strong clamping force and resistance to loosening under vibration. The yellow cadmium finish is commonly specified in aerospace, defense, and heavy equipment applications where corrosion protection and traceability are important. Licensed trades and industrial maintenance professionals install this type of fastener in machine components, brackets, and structural assemblies.

Key Features

• 5/16-18 UNC coarse thread for strong clamping and vibration resistance
• Partially threaded shank allows precise shear and load distribution
• 1/4-inch hex socket drive for use with standard hex keys or socket drivers
• 4037 alloy steel construction for high tensile strength
• Yellow cadmium plating provides corrosion resistance and finish identification
• Conforms to ASME B18.3 fastener dimensional standard

Compatibility

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

Installation Notes

Install using a calibrated torque wrench and a 1/4-inch hex key or socket bit to avoid fastener damage. Ensure mating threads are clean and free of debris before installation. Yellow cadmium-plated fasteners may require handling precautions in accordance with applicable safety guidelines for cadmium-containing materials. Do not mix with fasteners of different thread standards or material grades in the same joint.