Value Collection 354-0524-01 Flat Socket Cap Screw 5/16-18

Product Description

The VALUE COLLECTION 354-0524-01 is a flat socket cap screw designed for applications requiring a low-profile, flush-mount fastener with high drive torque capability. It features a Torx Plus T40 drive and an 82-degree flat head, allowing the fastener to sit flush or countersunk in mating material when properly installed. Machined from alloy steel with a black oxide finish, it provides moderate corrosion resistance and a clean, dark appearance suited to tooling, fixtures, machine assemblies, and fabricated components. The 5/16-18 UNC thread is fully threaded along the 1-1/2-inch body length, maximizing thread engagement across the full grip range.

This screw is commonly used in industrial machinery, jigs, fixtures, dies, and structural assemblies where a flush-sitting fastener is required and a Torx Plus drive is specified for high-torque or tamper-resistance applications. It is appropriate for both light fabrication and precision machine work. The UNC thread form makes it compatible with standard inch-system tapped holes and threaded inserts common in North American manufacturing and maintenance environments. Minimum order quantity is 100 pieces; each unit is packaged individually.

Key Features

• 82-degree flat head profile for flush or countersunk installation
• Torx Plus T40 drive resists cam-out and supports high installation torque
• Fully threaded 1-1/2 inch body length on a 5/16-18 UNC thread
• Alloy steel construction for high tensile strength in demanding assemblies
• Black oxide finish provides mild corrosion resistance and reduces light reflection
• Meets ASME/ANSI B18.3 and ASTM F835 fastener standards

Compatibility

Designed for use in standard inch-system 5/16-18 UNC tapped holes. Compatible with any mating component machined to accept an 82-degree countersunk flat-head fastener per ASME/ANSI B18.3 specifications.

Installation Notes

Installation is performed with a Torx Plus T40 bit or driver; standard Torx bits may engage but are not recommended as they can damage the drive recess. Ensure the mating hole is properly countersunk to 82 degrees to achieve a flush seating surface before driving the fastener. De-burr and clean tapped holes before installation to prevent cross-threading. Follow applicable mechanical assembly standards and torque guidelines for 5/16-18 alloy steel fasteners as specified by the equipment manufacturer or applicable ASME standards.