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The VALUE COLLECTION 3TSSF98C012 is a 1/2-13 UNC flat socket cap screw designed for flush-mount fastening applications where a countersunk head profile is required. The 82-degree flat head seats fully into a matching countersunk hole, leaving a smooth surface when installed. Drive engagement is via a 5/16-inch hex socket. The body is machined from 316 stainless steel, which provides strong resistance to corrosion in wet, marine, and chemically aggressive environments. Overall length is 3/4 inches. Weighing approximately 0.0057 pounds per piece, this fastener is well suited for low-clearance assemblies where head protrusion is not acceptable.
This screw is used across a wide range of industrial, mechanical, and equipment assembly applications. It is a common choice in plumbing, HVAC bracket work, pool and spa equipment enclosures, and marine installations where corrosion resistance is a priority. The 316 stainless steel grade is preferred over 304 in chloride-heavy or salt-water-adjacent environments. Thread size 1/2-13 UNC is a standard coarse-thread designation compatible with tapped holes and hex nuts of the same specification.
Designed for use in standard 1/2-13 UNC tapped holes requiring an 82-degree countersunk flat head socket cap screw per inch-series fastener standards.
Installation requires a 5/16-inch hex key or hex socket bit driver. The mating hole must be countersunk to an 82-degree angle to allow proper head seating. Ensure the tapped hole depth and thread engagement are sufficient for the load requirements before final assembly. Follow applicable mechanical and structural fastener guidelines for the specific application.
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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