Value Collection 201009PR Button Socket Cap Screw 2-56

Product Description

The VALUE COLLECTION 201009PR is a button socket cap screw designed for precision fastening applications in mechanical assemblies, fixtures, and equipment. This fully threaded fastener features a low-profile button head driven by a hex socket and is manufactured from alloy steel with a black oxide finish. The 2-56 UNC thread and 3/16 inch length under head make it well suited for compact, tight-clearance installations. Hardness is rated at 36-43 HRC, providing strength appropriate for moderate-load fastening in metal-to-metal applications. It conforms to ANSI/ASME B18.3 and ASTM F835 standards. Licensed trades and precision assembly technicians working with light mechanical components or panel mounting applications are the primary installers.

This screw is used in applications where a standard hex socket cap screw head profile is too tall for the available clearance. The button head spreads clamping load over a slightly larger bearing surface while keeping overall protrusion minimal. Typical use cases include electronic enclosures, instrument panels, machine guards, light mechanical assemblies, and fixture plates where a flush or near-flush fastener profile is required. The black oxide coating provides mild corrosion resistance and reduces light reflection on exposed fastener heads. Minimum order quantity is 100 pieces per order.

Key Features

• Button head profile with hex socket drive for low-clearance installations
• Alloy steel construction with 36-43 HRC hardness per ASTM F835
• Black oxide finish provides mild corrosion resistance and a matte appearance
• Fully threaded 2-56 UNC right-hand thread with Class 3A fit for precise thread engagement
• Conforms to ANSI/ASME B18.3 and ASTM F835 dimensional and mechanical standards
• Head height of 0.046 inches supports low-profile assembly requirements

Compatibility

Designed as an OEM-style fastener for light mechanical assemblies, electronic enclosures, and precision fixtures requiring a 2-56 UNC button socket cap screw with a 3/16 inch length under head.

Installation Notes

Install using the appropriate hex key or hex socket driver sized for the button head recess. Verify mating thread condition and ensure the receiving hole is properly tapped to 2-56 UNC Class 3A tolerance before installation. Avoid over-torquing, as the small thread diameter and button head design limit the safe torsional load. Follow applicable mechanical assembly standards or equipment manufacturer specifications for fastener seating.