Value Collection 354-5508-01 Flat Socket Cap Screw 5-40

Product Description

The VALUE COLLECTION 354-5508-01 is a flat socket cap screw designed for precision fastening applications where a flush or countersunk head profile is required. Sized at 5-40 x 1/2 inches overall length, this screw is fully threaded along its entire shank. It is manufactured from alloy steel and finished with a black oxide coating, which provides moderate corrosion resistance and reduces light reflection. The drive interface is Torx Plus at a T10 size, offering improved torque transfer and reduced cam-out compared to standard hex drives. The 82-degree flat head angle conforms to ASME/ANSI B18.3 and ASTM F835 standards.

This screw is suited for mechanical assemblies, machinery, and equipment where a low-profile fastener is needed and a countersunk seat is machined into the mating part. The UNC thread standard and inch measurement system make it compatible with standard inch-series tapped holes. Typical applications include light mechanical assemblies, tool bodies, and precision equipment panels where head protrusion must be minimized. Installation is generally performed by maintenance technicians, machinists, or mechanical contractors working on equipment requiring flush-mount fasteners.

Key Features

• 82-degree flat head profile seats flush in standard countersunk holes
• Torx Plus T10 drive reduces cam-out and allows higher torque application
• Alloy steel construction provides high tensile strength for the fastener class
• Black oxide finish offers mild corrosion resistance and low-glare appearance
• Fully threaded shank along the entire 1/2-inch length
• Meets ASME/ANSI B18.3 and ASTM F835 fastener standards

Compatibility

Designed for use in standard UNC inch-series tapped holes sized for a 5-40 thread. Suitable for countersunk hole profiles machined to an 82-degree included angle.

Installation Notes

Install using a T10 Torx Plus bit; use of standard Torx bits is not recommended as it may reduce drive engagement. Ensure the mating hole is countersunk to 82 degrees before installation. Follow applicable torque guidelines for the 5-40 alloy steel fastener class as specified by the equipment manufacturer or relevant ASME standards. Inspect threads and seating surface for damage before installation.