Value Collection 3TSSF98C400 Flat Socket Cap Screw 316 Ss

Product Description

The VALUE COLLECTION 3TSSF98C400 is a flat socket cap screw used to secure components flush or countersunk in a mating surface. The 82-degree flat head seats fully into a countersunk hole, leaving a low-profile finish. Drive engagement is through a 5/16-inch hex socket, which requires an Allen key or hex bit driver. Built from 316 stainless steel, this fastener resists corrosion in wet, chemical, and marine environments. The 1/2-13 UNC thread and 4-inch overall length make it well suited for moderate-to-heavy-load applications where a flush fastener profile is required.

This screw is used across a broad range of mechanical, structural, and industrial installations. Typical applications include plumbing equipment mounting, HVAC component assembly, pool and spa hardware, electrical enclosure work, and general marine or coastal environments where 316 stainless is specified for superior chloride resistance. It is installed by plumbers, HVAC technicians, electricians, and general mechanical contractors working on assemblies that require countersunk fastener placement.

Key Features

• 82-degree flat head seats flush in standard countersunk holes for a low-profile finish
• 5/16-inch hex socket drive for reliable torque transfer with standard Allen tools
• 316 stainless steel construction provides superior resistance to corrosion, salt water, and chemicals
• 1/2-13 UNC thread standard ensures broad compatibility with standard tapped holes and nuts
• Overall length of 4 inches suits deep-reach or thick-material fastening applications

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 requires a properly sized 5/16-inch hex key or Allen-head bit driver. The mating material must be machined or drilled with an 82-degree countersink to allow full flush seating of the flat head. De-energize or shut off any associated systems before fastener replacement on live equipment. Apply an appropriate anti-seize compound when installing stainless fasteners into stainless tapped holes to prevent galling.