Value Collection 354-2410-01 Flat Socket Cap Screw 1/4-28

Product Description

The VALUE COLLECTION 354-2410-01 is a 1/4-28 UNF flat socket cap screw designed for flush or countersunk fastening applications in industrial and mechanical assemblies. Measuring 5/8 inches in overall length and fully threaded, it uses a Torx Plus T30 drive with an 82-degree flat head profile. The alloy steel construction with black oxide finish provides solid mechanical strength while offering a degree of corrosion resistance in dry or lightly oiled environments. This fastener is installed by machinists, maintenance technicians, and mechanical assemblers who require a low-profile, high-torque-transfer fastening solution.

This screw is suited for applications where the fastener head must sit flush with or below the surface of the mating material. The 82-degree countersink geometry matches standard countersunk hole profiles used in precision machined parts, tooling fixtures, and general mechanical assemblies. The Torx Plus drive reduces cam-out under load compared to hex socket or Phillips drives, making it a preferred choice in production and maintenance environments. Fully threaded along its 5/8-inch length, it provides maximum thread engagement in thin materials or blind holes.

Key Features

• 1/4-28 UNF thread for fine-pitch engagement and vibration resistance
• 82-degree flat head seats flush in standard countersunk holes
• Torx Plus T30 drive minimizes cam-out during installation and removal
• Fully threaded 5/8-inch overall length for maximum thread engagement
• Alloy steel construction meets ASME/ANSI B18.3 and ASTM F835 fastener standards
• Black oxide finish for a uniform low-reflectance appearance and mild corrosion inhibition

Compatibility

Designed as a standard-dimension replacement or stock fastener for countersunk Torx Plus applications conforming to ASME/ANSI B18.3 and ASTM F835 in inch-series 1/4-28 UNF threaded assemblies.

Installation Notes

Install using a calibrated T30 Torx Plus driver or bit; do not substitute a standard Torx T30 driver, as Torx Plus lobes have a distinct geometry that may cause slippage or damage with non-matching tooling. Ensure the mating countersunk hole is machined to an 82-degree included angle to achieve proper head seating. Follow applicable torque specifications from the equipment manufacturer or applicable ASME standards for 1/4-28 alloy steel fasteners. Black oxide finish does not provide significant corrosion protection in wet or outdoor environments; apply supplemental corrosion inhibitor if required by the application.