Value Collection R57001012 Hex Socket Cap Screw 4-40 Unc

Product Description

The VALUE COLLECTION R57001012 is a hex socket cap screw designed for precision fastening in mechanical assemblies, machine components, and equipment maintenance applications. Threaded to 4-40 UNC with a 2-inch length under head, this fastener accepts a 3/32-inch hex drive for reliable torque transfer in tight spaces. Manufactured from 18-8 stainless steel with a bright, uncoated finish, it delivers solid corrosion resistance without surface treatment. At 0.05 pounds per unit, it is lightweight and well-suited for instrumentation, panel assembly, and light-duty mechanical work performed by maintenance technicians, electricians, and equipment service professionals.

This screw is commonly used in residential and commercial applications where a fine-thread, small-diameter fastener is required. Typical use cases include securing electrical enclosure components, HVAC control panels, instrumentation housings, and small mechanical assemblies. The 4-40 UNC thread pitch is a standard fine-thread specification widely used in electronics and light mechanical fabrication. The 18-8 stainless steel construction makes it suitable for environments with moderate moisture exposure.

Key Features

• 4-40 UNC thread size for fine-thread fastening in small-diameter applications
• 2-inch length under head provides sufficient grip depth for panel and housing assemblies
• 3/32-inch hex socket drive for use with standard Allen wrenches or hex keys
• 18-8 stainless steel construction offers corrosion resistance without coating
• Bright, uncoated finish maintains dimensional accuracy for close-tolerance fits

Compatibility

Designed as a standard 4-40 UNC hex socket cap screw suitable for use in any application requiring this thread specification and a 2-inch length under head fastener.

Installation Notes

Install using a 3/32-inch hex key or Allen driver; ensure the mating threaded hole is clean and free of debris before driving the fastener. Power down any electrical equipment before fastening components inside enclosures or control panels. Follow applicable NEC or equipment manufacturer guidelines when working inside electrical assemblies. Avoid over-torquing stainless steel fasteners, as galling can occur without proper lubrication or anti-seize compound.