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The VALUE COLLECTION 581243PR is a hex socket cap screw designed for precision fastening in mechanical assemblies, machine components, and structural applications. This fully threaded fastener features an 8-32 UNC thread size, a 3/16-inch length under head, and a 9/64-inch hex drive. Constructed from alloy steel with a black oxide finish, it delivers solid tensile strength and moderate corrosion resistance suitable for indoor and protected environments. Licensed technicians, machinists, and maintenance professionals install these screws where a flush or recessed hex drive is required and a standard hex head is not practical.
This cap screw is suited for use in general industrial machinery, HVAC equipment housings, electrical enclosures, pump assemblies, and other trade applications requiring a small-diameter, fully threaded fastener. The 8-32 UNC thread is a standard unified coarse thread widely encountered in equipment manufactured to imperial specifications. The black oxide coating reduces surface friction during installation and provides light rust inhibition in dry or low-humidity environments.
Designed as a standard 8-32 UNC hex socket cap screw for use in any application requiring an ASME/ANSI B18.3 or ASTM A574 compliant fastener of this thread size and length.
Installation is performed with a 9/64-inch hex key or Allen driver; ensure the driver is fully seated before applying torque to avoid rounding the socket. Power down or de-energize any equipment before accessing internal fastener locations on electrical or HVAC assemblies. Follow applicable equipment service manuals and relevant codes such as the NEC for electrical enclosures. Minimum order quantity for this fastener is 100 pieces.
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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