PennEngineering® Captive Panel Screw-Tool only, Non Flush, Spring-loaded PFC4 - Metric PFC4-M4-50-2

PFC4™ captive panel screws provide a tool-only, captive screw solution for stainless steel sheets, featuring a shoulder and blue plastic retaining ring to prevent loss. They install into sheets with hardness HRB 88 / HB 183 or less, and meet UL 1950 service area access requirements. The M4 x 0.7 thread size fits a minimum sheet thickness of 0.64 mm and recommends a hole size of 7.92 mm, with a minimum distance to edge of 7.87 mm. Screw length options include 50 mm and 72 mm variants. The design includes a dimple on the head for positive identification and a shoulder to ensure proper installation depth.