Standard_Parts_Catalogue

Page 652 | 2.2 Tensioning, Clamping with Knobs GN 3663 Torque Limiting Knurled Knobs / Knob Screws 1 2 2 2 3 4 d 1 d 2 Thread d 3 H7 Bore d 4 Thread Length  l d 5 d 6 h 1 h 2 t min. Torque ±10% in Nm 27 M 3 - - B 5 M 4 12 16 20 25 32 10 19 35 9,5 7 0,7 1 1,5 27 M 4 M 5 M 6 B 6 M 5 12 16 20 25 32 10 19 35 9,5 9 0,7 1 1,5 34 M 3 - - B 5 M 5 12 16 20 25 32 10 21 37,5 9,5 7 1 1,5 2,2 34 M 4 M 5 M 6 B 6 M 6 12 16 20 25 32 10 21 37,5 9,5 9 1 1,5 2,2 42 M 6 - - B 6 M 8 16 20 25 32 40 13,5 27 43,5 11,5 11 2 2,5 3,2 42 M 8 - - B 8 M 10 20 25 32 40 50 13,5 27 43,5 11,5 11 2 2,5 3,2 52 M 10 - - B 10 M 10 25 32 40 50 63 19 32 54 15,5 17 2,5 3 4 52 M 12 - - B 12 M 12 25 32 40 50 63 19 32 54 15,5 17 2,5 3 4 62 M 10 - - B 10 M 10 25 32 40 50 63 19 33 54 15,5 17 3 4 5,5 62 M 12 - - B 12 M 12 25 32 40 50 63 19 33 54 15,5 17 3 4 5,5 Torque limiting knurled knobs / knob screws GN 3663 are used when the manually applied torque is to be limited. When turned clockwise, the torque mechanical system of the knurled knob triggers an „over-engagement“ as soon as the specified torque is reached. When turning counterclockwise, the mechanical system locks such that the torque is not limited. For example, when tightening, this will ensure that the maximum permissible torque is not exceeded. On the other hand, the torque necessary for releasing will always be transferred reliably. Information • Knob Aluminum Black anodized • Torque mechanism Steel, hardened • Other parts Steel, blackened • Cover cap Plastic, light gray • RoHS Specification • Other dimensions of bore inserts, threaded inserts or threaded studs analog GN 300 → Page 428 / 429 • Other inserts with special threaded studs analog GN 306 → Page 436 • Other torques • Torque limiting turning counterclockwise or turning counterclockwise and clockwise On request 1 d 1 2 d 4 3 Length l 4 Torque How to order (Threaded stud) 1 2 3 4 GN3663-27-M4-20-0,7 1 d 1 2 d 2 (d 3 ) 4 Torque How to order (Bushing) 1 2 4 GN3663-62-M12-5,5