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The VALUE COLLECTION R40666440 is a hex socket cap screw designed for secure, high-torque fastening in tight clearance applications. The 6-32 UNC thread pattern and 3/8-inch length under head make it well-suited for lightweight structural assemblies, equipment panels, and precision mechanical fixtures. Constructed from 18-8 stainless steel, this fastener provides solid corrosion resistance in wet or chemically exposed environments. The 7/64-inch hex drive accepts a standard Allen wrench or hex bit, allowing controlled tightening without fastener head damage. Trade professionals and maintenance technicians reach for this size when working on instrumentation enclosures, HVAC control panel hardware, and similar light-gauge assemblies.
This screw fits applications requiring a #6-32 UNC machine thread in residential and commercial service environments. Common install scenarios include securing electrical enclosure covers, mounting small brackets, and fastening components in HVAC controls, plumbing fixtures, and pool equipment panels. The 18-8 stainless steel construction holds up in humid mechanical rooms and outdoor-adjacent equipment installations where carbon steel hardware would corrode prematurely.
Designed as a standard 6-32 UNC hex socket cap screw for use in any tapped hole or threaded insert conforming to the 6-32 UNC thread standard.
Installation requires a 7/64-inch hex key or hex bit driver. Follow applicable torque guidelines for 18-8 stainless steel fasteners at this thread size to avoid galling, which is common in stainless-to-stainless assemblies. Apply a small amount of anti-seize compound when threading into stainless or aluminum tapped holes. Always confirm thread engagement depth before applying 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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