
Parallel thread rolling couplers
| Model/mm | 16 | 18 | 20 | 22 | 25 | 28 | 32 | 36 | 40 | 
| OD/mm | 24 | 27 | 30 | 33 | 38 | 42 | 48 | 54 | 60 | 
| L/mm | 45 | 50 | 55 | 60 | 65 | 70 | 75 | 85 | 90 | 
| Thread/mm | M16.5*2.5 | M18.5*2.5 | M20.5*2.5 | M22.5*2.5 | M25.5*3 | M28.5*3 | M32.5*3 | M36.5*3 | M40.5*3 |