PennEngineering® Screw Head, Spring-loaded - Metric PFS2-M4-94

The PFS2 series consists of spring-loaded captive panel screws with external metric threads, designed for tool or hand operation and intended to remain captive during installation and removal. The PFS2-M4 variant features a M4 x 0.7 thread size with a screw length option of 14.3 mm (94 code), installed in sheet materials with a maximum hardness of HRB 80 or HB 150. The screw is made of carbon steel with a bright nickel over copper flash finish, while the retainer and spring are 300 series stainless steel. The retaining ring is nylon, with a maximum operating temperature of 93°C. The minimum panel thickness is 1.53 mm, and the minimum distance from the hole center to the panel edge is 6.4 mm. This design ensures reliable captive performance in electronics and industrial enclosures requiring frequent service access.