Value Collection 40248 Hex Socket Cap Screw 7/16-20 Unf

Product Description

The VALUE COLLECTION 40248 is a hex socket cap screw designed for mechanical fastening applications requiring precise thread engagement and high tensile strength. Made from alloy steel with a black oxide finish, this fastener measures 1.5 inches in length under the head and features a 3/8-inch hex drive. It is fully threaded along the 7/16-20 UNF thread form, providing uniform clamping force across the full length of the fastener. Black oxide coating offers moderate corrosion resistance and reduces light glare in finished assemblies. This screw meets ASME/ANSI B18.3 and ASTM A574 standards, making it suitable for structural and mechanical assemblies in industrial, HVAC, and equipment maintenance environments.

This fastener is used in applications where a low-profile, high-strength socket head cap screw is required. Typical installations include machinery frames, equipment brackets, HVAC unit panels, pump housings, and similar assemblies where hex socket drive access is available. The 7/16-20 UNF fine thread pitch provides greater thread engagement per inch compared to coarse thread, which is advantageous in thinner materials or where fine torque adjustment is needed. This screw is installed by mechanics, millwrights, HVAC technicians, and maintenance professionals.

Key Features

• 7/16-20 UNF fine thread for strong, precise thread engagement
• Fully threaded along the 1.5-inch length under head
• 3/8-inch hex socket drive for use with standard hex keys or socket tooling
• Alloy steel construction rated to ASTM A574 high-strength fastener specifications
• Black oxide finish for moderate corrosion resistance and reduced glare
• Conforms to ASME/ANSI B18.3 dimensional standards

Compatibility

Designed as a standard ASME/ANSI B18.3 hex socket cap screw suitable for use in any application requiring a 7/16-20 UNF fully threaded alloy steel fastener with a 3/8-inch hex drive.

Installation Notes

Install using a 3/8-inch hex key or socket bit driver. Ensure the mating threaded hole or nut is clean and free of debris before threading to avoid cross-threading. Power down and de-energize any equipment before replacing fasteners on live assemblies. Do not exceed the torque limits specified by the equipment manufacturer for this thread size and material grade.