| Specification |
|---|
| Manufacturer | Penn Engineering |
| Manufacturer's Part Number | PF12MF-440-1BL |
| Description | PF12MF-440-1BL Large Knob, Spring-Loaded Flare-Mounted Panel Screws |
| Product Type | PF12MF |
| Thread Size | #4-40 |
| Thread Code | 440 |
| A Shank Max. | 0.041 in |
| Thread Specification | External, ASME B1.1, 2A / ASME B1.13M, 6g |
| Fastener Retainer Material | Aluminum |
| Material Spring | 300 Series Stainless Steel |
| A | 0.041 in Max. |
| C | 0.186 in Max. |
| E | 0.417 in ± .010 |
| G | 0.23 in ± .025 |
| P | 0.055 in ± .025 |
| T1 | 0.31 in Nom. |
| T2 | 0.45 in Nom. |
| Hole Size in Sheet | 0.187 in +.005 - .000 |
| Drive Size | #1 |
| Material Knob | Aluminum |
| Material Screw | Hardened Carbon Steel |
| Finish Knob | Black Anodize |
| Finish Retainer | Natural Finish |
| Finish Screw | Black Nitride, AMS2753, Section 3 |
| Finish Spring | Natural Finish |
