UNI 6547 – Metric Threaded Rods
UNI 6547 is used for metric threaded rods. This drawing identifies nominal thread diameter, pitch and rod length.
Coarse-thread reference schedule
| Thread | Coarse pitch P (mm) | Approx. mass (kg/1000 pcs) |
|---|---|---|
| M3 | 0.5 | 44 |
| M4 | 0.7 | 78 |
| M5 | 0.8 | 124 |
| M6 | 1.0 | 177 |
| M8 | 1.25 | 310 |
| M10 | 1.5 | 491 |
| M12 | 1.75 | 712 |
| M14 | 2.0 | 975 |
| M16 | 2.0 | 1310 |
| M18 | 2.5 | 1627 |
| M20 | 2.5 | 2052 |
| M22 | 2.5 | 2526 |
| M24 | 3.0 | 2956 |
| M27 | 3.0 | 3821 |
| M30 | 3.5 | 4883 |
| M33 | 3.5 | 5758 |
| M36 | 4.0 | 6804 |
| M39 | 4.0 | 8085 |
| M42 | 4.5 | 9322 |
| M45 | 4.5 | 11000 |
| M48 | 5.0 | 12400 |
| M52 | 5.0 | 14700 |
Mass figures are approximate catalogue values for 1,000 rods; actual mass depends on supplied length and material. The cited supplier lists 2 m and 3 m stock lengths.
Reference schedule: UNI 6547 / DIN 975 threaded-rod sheet.