PennEngineering® Large Knob, Spring-loaded - Types PF11MW and PF12MW - Metric PF12MW-M4-1-2-BL

PF12MW series captive panel screws are spring-loaded, flare-mounted, floating fasteners with a knurled knob, designed for applications where mating panel spacing is not acceptable. The assembly includes an aluminum knob and retainer, a hardened carbon steel screw, a 300 series stainless steel spring, and a stainless steel washer. The part is available in metric threads including M4 x 0.7, with a shank length of 8.79 mm and a total installed height of 13.06 mm. The BL suffix indicates a DuraBlack finish on the screw. The screw is designed for installation into sheet materials with a minimum thickness of 1.6 mm and provides positive stop during installation. It accommodates panel misalignment and installs into any sheet hardness.