Value Collection 40247 Hex Socket Cap Screw 7/16-20 Unf

Product Description

The VALUE COLLECTION 40247 is a hex socket cap screw designed for applications requiring a recessed drive fastener with precise thread engagement. Built to ASME/ANSI B18.3 and ASTM A574 standards, this screw features a 7/16-20 UNF thread size with full threading along the 1-inch length under head. The alloy steel construction delivers high tensile strength, while the black oxide coating provides moderate corrosion resistance and reduces light reflection. A 3/8-inch hex drive is required for installation. This fastener is suited for mechanical assembly, maintenance, and fabrication work across industrial, HVAC, and plumbing applications.

This cap screw is used in applications where a flush or low-profile fastener head is needed, including equipment panels, brackets, manifold assemblies, and structural mechanical joints. The fine UNF thread pitch is preferred in applications requiring greater thread engagement per inch and resistance to loosening under vibration. Fully threaded along its entire shank, this fastener accommodates thin material assemblies and close-tolerance work.

Key Features

• 7/16-20 UNF thread size with fine pitch for vibration-resistant fastening
• Fully threaded shank along the full 1-inch length under head
• Alloy steel construction meets ASTM A574 high-strength requirements
• Black oxide finish provides moderate corrosion resistance and low reflectivity
• 3/8-inch hex socket drive for use with standard hex keys or socket drivers
• Conforms to ASME/ANSI B18.3 dimensional standards

Compatibility

Designed as a standard ASME/ANSI B18.3 hex socket cap screw suitable for mechanical assemblies, equipment enclosures, and structural joints requiring a 7/16-20 UNF fine-thread fastener.

Installation Notes

Installation is performed using a 3/8-inch hex key or socket driver. Ensure mating threads are clean and free of debris before driving to avoid cross-threading. Power down or depressurize any system before removing or replacing fasteners in pressurized or energized assemblies. Do not exceed the rated tensile load of the fastener or substitute with non-ASTM A574-grade hardware in high-strength applications.