PennEngineering® Screw Head, Spring-loaded - Unified PFS2-832-94-BN

The PFS2 series comprises spring-loaded captive panel screws with a screw head, designed for tool or hand operation. The assembly includes a carbon steel screw, hardened carbon steel retainer, 300 series stainless steel spring, and a nylon retaining ring rated to 200°F (93°C). It installs into sheet materials with hardness up to HRB 80 or HB 150. The #8-32 thread variant has a 0.275 inch shank length, minimum hole size of 0.060 inch, and minimum edge distance of 0.28 inch. The retainer pushout force in cold-rolled steel is 300 lbs. The finish is bright nickel over copper flash per ASTM B689, Type II, or optional black nitride per AMS2753, Section 3. Thread specification is ASME B1.1, 2A / ASME B1.13M, 6g. A shoulder provides positive installation stop.