Value Collection MS16997-101 Hex Socket Cap Screw 3/8-16

Product Description

The VALUE COLLECTION MS16997-101 is a hex socket cap screw designed for high-strength fastening in mechanical, structural, and industrial assemblies. Manufactured from 4037 alloy steel and finished with a yellow cadmium-plate coating, this fastener delivers solid corrosion resistance alongside the tensile strength expected from alloy-grade hardware. The 3/8-16 UNC thread and 1-1/2 inch length under head make it a standard choice for medium-duty bolted connections. Drive engagement is via a 5/16 inch internal hex socket, accepting a standard hex key or socket-drive tool. The fully threaded shank ensures maximum thread engagement across the full clamping length. This screw meets ASME B18.3 dimensional standards, confirming consistent head geometry and thread tolerances for professional use.

This cap screw is suited for general mechanical assembly, equipment maintenance, and fabrication work where a recessed-drive fastener is required. The hex socket head sits flush or countersunk in clearance-bore applications and is commonly used in machinery frames, brackets, fixtures, and industrial equipment. The yellow cadmium finish provides a measurable improvement in corrosion resistance over bare steel, making it appropriate for indoor and light-duty outdoor applications. Licensed trade mechanics, maintenance technicians, and fabricators working in HVAC equipment assembly, pump and compressor servicing, and related mechanical trades will find this a reliable standard-thread replacement or production fastener.

Key Features

• 3/8-16 UNC fully threaded shank for maximum thread engagement
• 1-1/2 inch length under head suits medium-depth clamping applications
• 4037 alloy steel construction for high tensile strength
• Yellow cadmium-plate finish provides corrosion protection
• 5/16 inch hex socket drive accepts standard hex keys and socket drivers
• Meets ASME B18.3 dimensional standard for consistent fit and interchangeability

Compatibility

Designed as an OEM-style replacement or production fastener for any application requiring a 3/8-16 UNC hex socket cap screw conforming to ASME B18.3 dimensional standards.

Installation Notes

Installation is performed with a 5/16 inch hex key or T-handle driver; use of a torque wrench is recommended per the applicable equipment service manual for the specific assembly. Ensure mating threads are clean and free of debris before installation. Cadmium-coated fasteners should be handled with appropriate precautions in accordance with applicable shop safety standards, as cadmium plating requires care during cutting, grinding, or welding operations. Do not mix thread forms or force engagement with metric threads.