Easy-grip phenolic knob. Four-prong design provides a firm grip for applications requiring quick tightening and high torque. Molded-in steel stud for superior strength. Made in USA.
| Item | Material | Heat Treat | Finish | DFARS | RoHS |
| Four-Prong Knobs-Stud Type (Phenolic) | Black phenolic plastic (glossy smooth Finish, extremely hard, electrical insulator, operating temperatures to 300°F, resistant to oils and most common chemicals) | - | Molded-in Brass | Yes | Yes |
| Mild Steel Stud | Zinc Plated Clear Chromate | - | Yes | Yes | Yes |

| A (mm) | B (mm) | C Diameter (mm) | D (mm) | E Thread | Thread Pitch (mm) | F (mm) | G (mm) |
| 57mm | 29mm | 25mm | 14mm | M10 | 1.5mm | 40mm | 8mm |