PennEngineering® Large Knob, Spring-loaded - Types PF11MW and PF12MW - Unified PF12MW-440-1-1

PF12MW captive panel screws are spring-loaded, flare-mounted, floating fasteners designed to compensate for mating hole misalignment and install into panels of any hardness. The assembly includes an aluminum knob, aluminum retainer, hardened carbon steel screw, 300 series stainless steel spring, and stainless steel washer, with a .063 inch nominal thickness sheet capability and a .076 inch minimum washer thickness. Thread size is #4-40, with a knurled knob and Phillips driver. Part number PF12MW-440-1-1 is a variant of the PF12MW series, which supports multiple thread sizes and optional finishes including DuraBlack.