Value Collection R63061643 Button Socket Cap Screw 2-56

Product Description

The VALUE COLLECTION R63061643 is a 2-56 UNC button socket cap screw designed for precision fastening applications where a low-profile head is required. Manufactured from 18-8 stainless steel with a bright, uncoated finish, this screw resists corrosion in a wide range of service environments. The hex socket drive allows for high torque application in tight spaces using a standard hex key. At 1/4 inch under-head length and a head height of 0.046 inches, it is well suited for assemblies where clearance and head projection must be minimized. Meets ANSI/ASME B18.3 dimensional standards and carries a 3A thread fit class for close-tolerance installations. Installed by machinists, maintenance technicians, and assembly professionals across industrial and commercial settings.

This screw is used in light-duty mechanical assemblies, electronic enclosures, instrument panels, and precision equipment where a 2-56 UNC thread form is specified. The button head profile distributes clamping load over a wider bearing area compared to a flat or pan head, making it a common choice in sheet metal and thin-panel assemblies. The 18-8 stainless steel construction makes it appropriate for indoor and mildly corrosive outdoor environments. Minimum order quantity is 100 pieces per order.

Key Features

• Button head with hex socket drive for low-profile, high-torque fastening
• 18-8 stainless steel construction provides corrosion resistance in a wide range of environments
• Bright, uncoated finish — no added coating thickness to affect fit in close-tolerance holes
• Conforms to ANSI/ASME B18.3 fastener standard
• 3A thread fit class ensures accurate thread engagement for precision assemblies
• Right-hand UNC thread direction, standard for general mechanical use

Compatibility

Designed as an OEM-style replacement or direct-use fastener for any assembly specifying a 2-56 UNC button socket cap screw per ANSI/ASME B18.3.

Installation Notes

Installation is performed by machinists or assembly technicians using a properly sized hex key or hex driver bit. Ensure mating threads are clean and free of debris before driving to prevent galling, which is a common risk with stainless steel fasteners. Do not over-torque — 18-8 stainless can gall and seize if driven beyond its yield point. Follow the assembly drawing or equipment service manual for the specified torque value for this thread size.