The M8 size of Turnbuckle is dimensioned by ISO / DIN. The tables below give the dimensional row from the standard, the drill and spanner sizes that go with it, and the assembly torque per property class. The technical drawing on this page redraws to the exact values selected.
M8 Dimensional Row (ISO / DIN)
| Thread size | Total length closed (mm) | Take-up length (mm) | Working load limit (kg) | Material | Reference standard |
|---|---|---|---|---|---|
| M8 | 125 | 90 | 140 | Drop-forged steel, hot-dip galvanized | DIN 1480 / GB/T 5973 |
Spanner & Drive for M8 Turnbuckle — ISO / DIN (Series 156)
Drive geometry for M8 Turnbuckle — ISO / DIN (Series 156) is given by the row above; match the tool to the listed values.
Common Applications for M8 Turnbuckle — ISO / DIN (Series 156)
M8 Turnbuckle — ISO / DIN (Series 156) are commonly specified for general engineering applications.
When to Step Up or Down from M8
When the joint preload approaches the proof load of M8 class 8.8, step up to M10 class 8.8 (or move to M8 class 10.9). When the joint is over-specified, M6 often saves weight and cost without losing the safety margin.