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The VALUE COLLECTION R64406328 is a hex socket cap screw designed for secure, high-strength fastening in mechanical, plumbing, and industrial assembly applications. Featuring a 3/8-16 UNC thread and a 1-1/4 inch length under head, this fastener is driven with a 5/16-inch hex key. Constructed from 18-8 stainless steel with a bright, uncoated finish, it offers reliable corrosion resistance in environments where exposure to moisture or mild chemicals is a concern. Installers and maintenance technicians reach for this screw where a flush or recessed fastener profile is required and torque retention is critical.
This socket cap screw is suited for residential and commercial mechanical assemblies, equipment fabrication, pump and valve mounting, and general trade work where UNC threads are standard. The 3/8-16 UNC thread form is widely used in North American fastener applications, making this screw compatible with a broad range of tapped holes and threaded inserts across HVAC, plumbing, and electrical enclosure assemblies. Sold individually per package with a minimum order quantity of 50 pieces.
Designed as a standard 3/8-16 UNC hex socket cap screw for use in any application requiring this thread size and drive type with an 18-8 stainless steel material grade.
Installation is typically performed by mechanics, millwrights, plumbers, or HVAC technicians using a 5/16-inch hex key or socket driver. Ensure mating threads are clean and free of debris before installation. Do not cross-thread; hand-start the fastener before applying torque. Follow equipment manufacturer torque specifications for the specific assembly being serviced.
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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