PennEngineering® Screw Head, Spring-loaded - Unified PFS2-832-72-BN

PFS2 captive panel screws are spring-loaded, tool or hand-operated fasteners with a screw head, designed for secure mounting and easy access in thin material panels. The assembly includes a carbon steel screw, a 300 series stainless steel spring, and a nylon retaining ring rated to 200°F (93°C). Installed in sheet steel with hardness up to HRB 80 or HB 150, the -832 thread size corresponds to 8-32 UNC with a 0.500 inch screw length. The BN finish denotes black nitride coating per AMS2753, Section 3, applied to both retainer and screw. Minimum hole size is 0.060 inch, and minimum edge distance is 0.310 inch. Diagonal knurling identifies metric variants, but this is a unified thread model.