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The Value Collection R57001090 is a hex socket cap screw designed for applications requiring a recessed drive fastener with high corrosion resistance. Manufactured from 18-8 stainless steel with a bright uncoated finish, this screw features a 5/8-11 UNC thread size and measures 5-1/2 inches in length under the head. It is driven with a 1/2-inch hex key. This fastener is suited for mechanical assemblies, structural connections, and equipment fabrication where stainless steel is specified for its corrosion resistance and strength. Licensed contractors, millwrights, pipefitters, and maintenance technicians are the typical users.
This hex socket cap screw fits general-purpose fastening applications across industrial, commercial, and mechanical service environments. The 5/8-11 UNC thread is a coarse-thread standard commonly found in machine frames, pipe supports, pump housings, and heavy equipment. The socket cap head profile allows installation in tight or recessed clearance areas where a hex wrench provides better torque access than an open-end or box wrench. It is sold individually and is appropriate for both new construction and field repair work.
Designed as a standard-specification replacement or new-installation fastener for any application requiring a 5/8-11 UNC hex socket cap screw with a 5-1/2-inch length under head in 18-8 stainless steel.
Install using a 1/2-inch hex key or hex bit driver rated for the torque required by the joint specification. Ensure the mating tapped hole is clean and free of debris before threading. When working on pressurized systems or energized equipment, follow lockout/tagout procedures and applicable codes before fastening or removing hardware. Avoid mixing stainless fasteners with dissimilar metals in high-conductivity environments where galvanic corrosion is a concern.
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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