Value Collection 354-0420-01 Flat Socket Cap Screw 1/4-20

Product Description

The VALUE COLLECTION 354-0420-01 is a flat socket cap screw designed for applications requiring a low-profile, flush-mounted fastener. This 1/4-20 UNC fully threaded screw measures 1-1/4 inches in overall length and is machined from alloy steel with a black oxide finish for moderate corrosion resistance. Drive engagement is via a Torx Plus T30 socket, which provides higher torque transfer and reduced cam-out compared to standard hex drives. The 82-degree flat head countersinks flush with the mating surface. It is installed by machinists, millwrights, maintenance technicians, and general contractors in structural and mechanical assemblies.

This screw is suited for countersunk hole applications in metal, wood, and composite assemblies where a flush or sub-flush surface finish is required. The Torx Plus drive makes it a practical choice in production environments where powered fastening tools are used. The black oxide finish provides a consistent appearance and light surface protection in dry or mildly humid indoor environments. Typical use cases include machine frames, enclosures, fixtures, and equipment panels requiring a clean, snag-free surface.

Key Features

• 82-degree flat head countersinks flush with the work surface for a snag-free finish
• Torx Plus T30 drive provides higher torque capacity and reduced cam-out versus hex socket drives
• Fully threaded 1/4-20 UNC shank for maximum thread engagement across the full length
• Alloy steel construction meets ASME/ANSI B18.3 and ASTM F835 fastener standards
• Black oxide finish adds surface hardness and light corrosion resistance in dry environments

Compatibility

Designed as an OEM-style replacement or standard-stock flat socket cap screw for any application requiring a 1/4-20 UNC, 1-1/4-inch overall length, 82-degree countersunk, Torx Plus T30 drive fastener conforming to ASME/ANSI B18.3 and ASTM F835.

Installation Notes

Install using a calibrated T30 Torx Plus bit with a torque wrench or controlled power driver appropriate to the mating material and joint requirements. Ensure the countersunk hole is machined to an 82-degree included angle to achieve proper head seating. De-energize any equipment and follow applicable lockout/tagout procedures before fastener replacement in live machinery. Black oxide fasteners are not intended for outdoor or high-humidity service without additional corrosion protection.