Value Collection 354-5410-01 Flat Socket Cap Screw 4-40

Product Description

The VALUE COLLECTION 354-5410-01 is a 4-40 x 5/8-inch flat socket cap screw designed for precision fastening in tight, countersunk installations. Manufactured from alloy steel with a black oxide finish, this screw delivers reliable corrosion resistance and a low-profile, flush-mount head. The 82-degree flat head geometry seats cleanly in standard countersunk holes. A T10 Torx Plus drive provides high torque transfer with reduced cam-out risk compared to standard hex or Phillips drives. The screw is fully threaded along its 5/8-inch overall length, conforming to ASME/ANSI B18.3 and ASTM F835 standards. Licensed mechanics, machinists, electricians, and maintenance technicians install this fastener in assemblies requiring a flush surface and a secure, vibration-resistant connection.

This flat socket cap screw is suited for use in light mechanical assemblies, electrical enclosures, instrument panels, and precision equipment where a recessed, flush head is required. The 4-40 UNC thread size is commonly found in small-diameter applications including electronic chassis, control panels, and instrumentation hardware. The black oxide finish reduces light reflection and provides mild corrosion protection in indoor and low-moisture environments. This screw is sold in a minimum order quantity of 100 units per order, with a package quantity of 1 per unit.

Key Features

• 4-40 UNC fully threaded, 5/8-inch overall length for complete thread engagement throughout
• 82-degree flat head profile seats flush in standard countersunk holes
• T10 Torx Plus drive reduces cam-out and allows higher installation torque
• Alloy steel construction provides strength appropriate for small-diameter fastener applications
• Black oxide finish offers mild corrosion resistance and low-glare appearance
• Meets ASME/ANSI B18.3 and ASTM F835 fastener standards

Compatibility

Designed as an OEM-style replacement or standard-specification fastener for any application requiring a 4-40 UNC flat socket cap screw with an 82-degree head angle and T10 Torx Plus drive, per ASME/ANSI B18.3 and ASTM F835.

Installation Notes

Installation is typically performed by machinists, maintenance technicians, or electricians using a T10 Torx Plus bit and appropriate driver. Ensure the mating countersink is machined to an 82-degree angle before installation to achieve a flush seat. Follow torque guidelines specified by the assembly engineer or applicable industry standard for 4-40 alloy steel fasteners. Do not overtighten small-diameter screws, as thread stripping is possible in softer mating materials.