PennEngineering® Large Knob, Spring-loaded - Types PF11MF and PF12MF - Metric PF12MF-M4-0-BL

PF12MF-M4-0-BL is a spring-loaded, flare-mounted captive panel screw with a large knob, designed for easy service access and secure fastening in thin panels. The part features a metric M4 x 0.7 thread, a knob with black anodized finish, and a screw with black nitride coating as indicated by the "BL" suffix. The screw is constructed with an aluminum knob and retainer, a hardened carbon steel screw body, and a 300 series stainless steel spring. It installs into panels with a minimum thickness of 1.83 mm and requires a countersunk hole of 6.76 mm maximum diameter. The design provides a minimum float of 0.25 mm in all directions and includes a shoulder for positive installation stop. The screw is driven by a #2 Phillips driver and meets ASME B1.13M, 6g external thread specifications.