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The VALUE COLLECTION R63008440 is a hex socket cap screw designed for secure, high-torque fastening in demanding industrial and mechanical applications. With a 5/8-11 UNC thread and a 3-inch length under head, this cap screw accepts a 1/2-inch hex drive for reliable torque transfer. Constructed from 316 stainless steel, it provides strong resistance to corrosion and is well suited for wet, marine, or chemical environments where carbon steel fasteners would degrade. Machinists, millwrights, pipefitters, and maintenance technicians commonly specify 316 stainless hardware where material compatibility and longevity under exposure are required.
This cap screw is used in general industrial assembly, equipment mounting, structural fixturing, and maintenance repair operations across a wide range of industries. The 5/8-11 UNC coarse thread form is a standard designation, making this fastener easy to source replacements for and compatible with standard UNC tapped holes in that size class. It is sold individually, making it practical for repair kits, small-batch jobs, or replacing a single damaged fastener in a critical assembly.
Designed as a standard UNC fastener for use in any application requiring a 5/8-11 coarse thread socket cap screw with a 3-inch length under head and 1/2-inch hex drive.
Installation is performed with a 1/2-inch hex key or Allen-drive socket. Ensure the mating tapped hole is clean and free of debris before threading. Apply an appropriate anti-seize compound when installing stainless steel fasteners into stainless or aluminum threads to prevent galling. Follow applicable torque specifications from the equipment manufacturer or relevant mechanical standards for 5/8-11 UNC fasteners.
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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