Value Collection 3TSSF98C112 Flat Socket Cap Screw

Product Description

The VALUE COLLECTION 3TSSF98C112 is a flat socket cap screw designed for applications requiring a flush or countersunk fastener profile. It features a 5/16-inch hex socket drive and an 82-degree flat head geometry that seats flush with or below the mating surface when installed in a properly chamfered hole. The fastener is manufactured from 316 stainless steel, offering strong resistance to corrosion in wet, chemical-exposed, and marine environments. The thread specification is 1/2-13 UNC with an overall length of 1-3/4 inches. This screw is installed by licensed tradespeople, maintenance technicians, and mechanical contractors working in industrial, marine, and process-equipment applications.

This flat socket cap screw suits installations where a protruding fastener head is not acceptable — common in pump housings, valve bodies, brackets, enclosures, and equipment panels found in HVAC, plumbing, and industrial process systems. The 316 stainless steel material grade makes it a practical choice in chlorinated environments such as pool and water-treatment equipment, as well as in coastal or high-humidity installations where fastener corrosion is a known service concern. The 1/2-13 UNC thread is a widely used coarse-thread standard that accepts standard nuts, inserts, and tapped holes of the same designation.

Key Features

• 82-degree flat head seats flush in standard countersunk holes, eliminating protrusion
• 5/16-inch hex socket drive for use with standard Allen or hex-key tooling
• 316 stainless steel construction provides superior corrosion resistance versus 18-8 or 304 grades
• 1/2-13 UNC coarse thread for broad compatibility with standard tapped holes and hardware
• Overall length of 1-3/4 inches measured from head to tip
• Suitable for wet, marine, chemical, and chlorinated service environments

Compatibility

Designed as a standard 1/2-13 UNC flat socket cap screw for use in any application requiring an 82-degree countersunk hex-socket fastener in 316 stainless steel.

Installation Notes

Installation is performed by qualified mechanical contractors or maintenance technicians. The mating surface must be drilled and countersunk to the correct 82-degree angle to achieve full head seating. Use a calibrated 5/16-inch hex key or Allen driver and follow applicable torque guidelines for 316 stainless steel fasteners per your project specifications. De-energize or depressurize any equipment before fastener removal or installation to prevent injury.