Value Collection MP33620-1 Hex Socket Cap Screw 5/16-18

Product Description

The VALUE COLLECTION MP33620-1 is a hex socket cap screw intended for use in mechanical assemblies, equipment fabrication, and general industrial fastening applications. It features a 5/16-18 UNC thread size with full threading along its 1-1/4 inch length under head. The screw is driven with a 1/4 inch hex key and is manufactured from alloy steel with a black oxide coating that provides moderate corrosion resistance and a clean, low-reflectance finish. It conforms to ASME/ANSI B18.3 and ASTM A574 standards. Machinists, maintenance technicians, fabricators, and millwrights commonly install this fastener type across a wide range of commercial and industrial settings.

This screw is suited for general-purpose mechanical and structural fastening where a recessed drive head is required for flush or below-surface installation. The 5/16-18 UNC coarse thread pattern offers good pull-out strength and resistance to loosening under vibration. The black oxide alloy steel construction makes it appropriate for interior or dry-environment assemblies. It is sold in multiples of 25 units minimum.

Key Features

• 5/16-18 UNC coarse thread for strong engagement and vibration resistance
• Fully threaded along the 1-1/4 inch length under head
• 1/4 inch hex socket drive for precise torque application with standard hex keys or Allen drivers
• Alloy steel construction meets ASTM A574 mechanical property requirements
• Black oxide coating provides a clean finish with moderate corrosion resistance in dry environments
• Conforms to ASME/ANSI B18.3 dimensional standards

Compatibility

Designed as a standard ASME/ANSI B18.3 hex socket cap screw compatible with any 5/16-18 UNC threaded hole requiring a 1/4 inch hex drive fastener in alloy steel construction.

Installation Notes

Installation requires a 1/4 inch hex key or Allen-head driver; ensure proper seating and alignment before applying torque. Power down and de-energize any equipment before accessing fastener locations on live machinery. Do not mix thread standards — confirm the receiving hole is machined for UNC threads before installation. Follow applicable industry torque guidelines for alloy steel socket cap screws of this thread class.