For wire rope, GB/T 6170 is the governing document for the dimensions listed below. Mechanical and performance requirements for this part family are set by its own standards, not by the bolt and screw property-class documents.
GB/T 6170 — Scope
GB/T 6170 specifies the dimensional requirements for wire rope — gb/t 6170 / iso 4032 (series 063). Material, surface condition and any performance rating are set by separate documents specific to this part family — ISO 898-1 and ISO 898-2, which govern bolt and nut property classes, do not apply here.
Tolerance & Product Grades
Tolerances for wire rope — gb/t 6170 / iso 4032 (series 063) are given as limits on the individual dimensions in the table rather than as a fastener product grade. Where a general-tolerance class is cited on the drawing instead, it applies to the dimensions not otherwise toleranced.
Dimensions Specified by GB/T 6170
| Nominal diameter (mm) | Construction | Min breaking force (kN) | Mass (kg/100m) | Material | Reference standard |
|---|---|---|---|---|---|
| 4 | 6x7 | 8.95 | 5.85 | Galvanized steel | GB/T 20118 / ISO 2408 |
| 5 | 6x7 | 13.4 | 8.94 | Galvanized steel | GB/T 20118 / ISO 2408 |
| 6 | 6x19 | 17.6 | 13.0 | Galvanized steel | GB/T 20118 / ISO 2408 |
| 8 | 6x19 | 31.3 | 23.0 | Galvanized steel | GB/T 20118 / ISO 2408 |
| 10 | 6x19 | 48.5 | 36.0 | Galvanized steel | GB/T 20118 / ISO 2408 |
| 12 | 6x19 | 69.5 | 52.0 | Galvanized steel | GB/T 20118 / ISO 2408 |
| 16 | 6x37 | 119 | 89.0 | Galvanized steel | GB/T 20118 / ISO 2408 |
| 20 | 6x37 | 185 | 138.0 | Galvanized steel | GB/T 20118 / ISO 2408 |
| 24 | 6x37 | 265 | 196.0 | Galvanized steel | GB/T 20118 / ISO 2408 |
Equivalent Standards
Where direct equivalents exist (ISO ↔ DIN, ISO ↔ ASME), they are listed on the parent Wire Rope — GB/T 6170 / ISO 4032 (Series 063) page. Always confirm against the dimensions on this page, since some "equivalent" standards differ in tolerances and head geometry.
When to Specify GB/T 6170
Choose GB/T 6170 for international engineering work and OEM supply where ISO standards are the contractual reference. It is the default modern specification for wire rope — gb/t 6170 / iso 4032 (series 063).

