Large easy-grip phenolic knob that is excellent for either fine-adjustment or high-torque applications. Molded-in brass insert provides superior thread strength. Made in USA.

| Item | Material | Heat Treat | Finish | RoHS |
| Fluted Knobs -Tapped (Phenolic) | Black phenolic plastic (glossy smooth finish, extremely hard, electrical insulator, operating temperatures to 300°F, resistant to oils and most common chemicals) | Yes | Yes | Yes |

| A Diameter (mm) | B (mm) | C Diameter (mm) | D (mm) | E Thread | Thread Pitch (mm) | F Thread Depth (mm) |
| 44.5mm | 27mm | 27mm | 13mm | M10 | 1.5mm | 13mm |