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The VALUE COLLECTION R63064362 is a flat socket cap screw engineered for fastening applications that require a flush or countersunk finish. Manufactured from 18-8 stainless steel, this fastener delivers strong corrosion resistance suitable for wet, outdoor, or chemically exposed environments. The 5/16-18 UNC thread and 3-inch overall length make it a practical choice for medium-load structural and mechanical assemblies. The 82-degree flat head seats flush when installed in a properly countersunk hole, and the 3/8-inch hex socket drive requires a standard hex key or Allen wrench for installation and removal. Machinists, millwrights, maintenance technicians, and industrial assemblers regularly specify this type of fastener.
This flat socket cap screw is suited for general industrial, commercial, and light structural applications where a recessed, low-profile head is required. The 5/16-18 UNC coarse thread pattern is widely used in through-hole and tapped-hole assemblies across machinery frames, enclosures, brackets, and fabricated components. Its stainless steel construction makes it appropriate for food-service equipment, marine hardware, HVAC sheet metal assemblies, and other environments where mild to moderate corrosion resistance is needed. This fastener ships in a minimum order quantity of 5 pieces.
Designed as an OEM-style replacement or direct-specification flat socket cap screw for any application requiring a 5/16-18 UNC, 3-inch, 82-degree flat head fastener in 18-8 stainless steel.
Installation is performed with a 3/8-inch hex key or Allen driver; confirm the mating hole is countersunk to 82 degrees before seating the fastener. Torque to the value specified by the equipment manufacturer or relevant structural standard for 5/16-18 stainless fasteners. Avoid mixing stainless steel fasteners with dissimilar metals in highly conductive or saline environments to minimize galvanic corrosion risk. Always verify thread engagement depth meets the requirements of the assembly design before final torque.
We pulled together the parts most installs need for this unit, plus a few add-ons worth a look. Check what you need — nothing here blocks checkout.
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