Value Collection 211025PR Flat Socket Cap Screw 5-40

Product Description

The VALUE COLLECTION 211025PR 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 5/8 inches with full threading, it accepts a 5/64-inch hex socket drive and features an 82-degree flat head angle conforming to ASME/ANSI B18.3 and ASTM F835 standards. Constructed from alloy steel with a black oxide finish, this fastener delivers solid mechanical strength and moderate corrosion resistance suitable for interior or protected assemblies. It is typically installed by machinists, maintenance technicians, and assembly professionals working in light mechanical, instrumentation, or industrial applications.

This screw fits countersunk hole applications requiring a UNC 5-40 thread pattern and an overall length of 5/8 inches. The black oxide finish helps reduce light reflection and provides mild surface protection. Fully threaded construction maximizes thread engagement across the entire shank length, making it well-suited for thin material fastening or applications where maximum clamping force over a short grip length is needed. Sold in a minimum order quantity of 100 pieces.

Key Features

• 82-degree flat head seats flush in standard countersunk holes per ASME/ANSI B18.3
• 5/64-inch hex socket drive for precise torque application in tight spaces
• Alloy steel construction provides high tensile strength for its size class
• Black oxide finish reduces reflection and offers mild corrosion resistance
• Fully threaded shank for maximum thread engagement across entire length
• Conforms to ASME/ANSI B18.3 and ASTM F835 fastener standards

Compatibility

Designed for use in countersunk fastening applications requiring a UNC 5-40 thread and an 82-degree flat head profile, consistent with ASME/ANSI B18.3 and ASTM F835 specifications.

Installation Notes

Installation is performed by machinists or assembly technicians using a 5/64-inch hex key or Allen driver. The mating countersink should be machined to an 82-degree included angle to ensure proper head seating and flush fitment. Do not overtighten small-diameter screws of this size class, as alloy steel fasteners at 5-40 can be susceptible to thread stripping in softer base materials. Verify thread compatibility with the mating component before installation.