PF11PM is a spring-loaded, captive panel screw with a plastic (PC/ABS) knob, designed for flush mounting in sheet materials up to HRB 80 or HB 150 hardness. It has a #4-40 unified thread and a Phillips drive, with a bright nickel-plated steel retainer and a zinc-plated carbon steel screw. The knob is black by default, with optional colored knurls for identification. The unit incorporates a spring-loaded mechanism and a retaining clip for secure captive mounting, allowing for panel access without loose hardware. Minimum installation clearance requires a 0.28 inch hole center to edge distance and accommodates material thicknesses of 0.036 inch. The plastic knob material complies with UL 94V-0 and is halogen-free, with a maximum operating temperature of 99°C.
| PennEngineering® | |
|---|---|
| Product Category | Captive Fasteners |
| Product Number | PF11PM-440-0-N |
| Product Name | Large Knob, Spring-loaded - PEM C.A.P.S. - Unified |
| Captive Fastener Class / Type | Captive Screws |
| Decimal Thread Diameter | 0.1120 inch (2.84 mm) |
| Unified Thread Notation | Unified |
| Shoulder Diameter | 0.0360 inch (0.9144 mm) |
| Panel Thickness | 0.0360 inch (0.9144 mm) |
