Value Collection -40884-2 Button Socket Cap Screw 3/8-16

Product Description

The VALUE COLLECTION -40884-2 is a 3/8-16 button socket cap screw designed for threaded fastening applications where a low-profile head and high-strength alloy steel construction are required. This screw features a hex socket drive measuring 3/16 inches and a 1.5-inch length under the head, with partial threading and a right-hand thread direction conforming to UNC standards. A black oxide finish provides mild corrosion resistance and reduces surface glare. Licensed machinists, maintenance technicians, and industrial assemblers install this type of fastener across a wide range of mechanical assemblies.

This button socket cap screw is suited for applications where a rounded, low-profile head is preferred over a standard socket head — common in machine guards, fixtures, enclosures, and assemblies where clearance is limited or exposed fasteners present a snag hazard. The 3/8-16 UNC thread and alloy steel construction make it appropriate for medium-to-high-load fastening in both light industrial and general manufacturing environments. It meets ANSI/ASME B18.3 and ASTM F835 standards, confirming dimensional and mechanical compliance for professional use.

Key Features

• Button head profile provides a low-profile, rounded appearance with reduced snag risk compared to standard socket heads
• 3/16-inch hex socket drive for standard hex key or Allen wrench installation
• Alloy steel construction with 36-43 HRC hardness range for reliable strength in demanding fastening applications
• Black oxide finish offers mild corrosion resistance and a non-reflective surface
• Partial threading on 1.5-inch length under head for engagement flexibility
• Right-hand, Class 3A thread fit per UNC standard ensures consistent fit with standard tapped holes
• Meets ANSI/ASME B18.3 and ASTM F835 fastener standards

Compatibility

Designed as a standard UNC 3/8-16 button socket cap screw for use in any tapped hole or mating nut conforming to 3/8-16 UNC Class 3B thread specifications in industrial, mechanical, or manufacturing assembly applications.

Installation Notes

Installation requires a 3/16-inch hex key or appropriately rated Allen driver. Ensure the mating tapped hole or nut is clean and free of debris before threading. Apply appropriate fastener torque per engineering specifications for the assembly — do not over-torque, as button head socket cap screws have lower drive engagement than standard socket head designs. Power down or de-energize any equipment before accessing fastener locations on live mechanical or electrical assemblies.