Value Collection 015211PR Hex Socket Cap Screw 5/16-18 Unc

Product Description

The VALUE COLLECTION 015211PR is a hex socket cap screw designed for applications requiring a compact, recessed-drive fastener with high tensile strength. Manufactured from alloy steel with a black oxide coating, this screw measures 2 inches in length under the head and carries a 5/16-18 UNC thread form with partial threading. The 1/4 inch hex socket drive accepts a standard hex key or Allen-type bit driver. Black oxide coating provides mild corrosion resistance and reduces surface reflectivity. This fastener meets ASME/ANSI B18.3, ASTM A574, and IFI 124 standards, making it suitable for precision mechanical assemblies where dimensional consistency and strength are required. Licensed tradespeople and maintenance technicians working in industrial, HVAC, or mechanical service applications commonly use this style of cap screw.

The 015211PR is suited for machine assembly, equipment mounting, and structural fastening in applications where a flush or recessed head profile is needed. The 5/16-18 UNC coarse thread is widely used in general-purpose steel-to-steel and steel-to-aluminum connections. Partial threading allows for accurate clamping in through-bolt configurations. This screw is appropriate for use in light industrial machinery, HVAC equipment frames, electrical enclosures, and mechanical panels where access space is limited and a hex key is the preferred installation tool.

Key Features

• 5/16-18 UNC coarse thread form for broad compatibility with standard tapped holes
• 2 inches length under head with partial threading for reliable clamping grip
• 1/4 inch hex socket drive for use with standard Allen keys or hex bit drivers
• Alloy steel construction meets ASTM A574 high-strength socket head cap screw specification
• Black oxide finish provides mild corrosion resistance and low-glare appearance
• Conforms to ASME/ANSI B18.3 and IFI 124 dimensional standards

Compatibility

Designed as a standard 5/16-18 UNC hex socket cap screw for use in any application requiring ASME/ANSI B18.3 compliant partially threaded socket head fasteners in alloy steel.

Installation Notes

Installation is performed using a 1/4 inch hex key or hex socket bit driver. Ensure the mating tapped hole is clean, free of debris, and dimensionally correct for 5/16-18 UNC threading before driving the fastener. Apply appropriate thread lubricant or threadlocker as required by the assembly specification. De-energize and lock out any equipment before performing fastener work on live machinery per applicable safety procedures.