ISO covers the dimensional requirements for wire rope thimble. Reproduced below: the complete size table, the tolerance grades, and the companion and equivalent standards referenced when ordering to this document.
ISO — Scope
ISO specifies the dimensions and tolerances of wire rope thimble — iso / din (series 158). Material, property class, surface finish and packaging are governed by separate documents in the same standards family (for example ISO 898-1 for the mechanical property classes of bolts and screws).
Tolerance & Product Grades
ISO, alongside the related ISO / DIN entries on this site, specifies product grades (typically A or B for fine work and C for general engineering) and tolerance classes for the controlling dimensions. Choose the grade against the precision your application requires.
Dimensions Specified by ISO
| For rope diameter (mm) | Inside length (mm) | Outside length (mm) | Material | Reference standard |
|---|---|---|---|---|
| 4 | 18 | 28 | Galvanized steel | DIN 6899 / GB/T 5974 |
| 5 | 22 | 33 | Galvanized steel | DIN 6899 / GB/T 5974 |
| 6 | 25 | 38 | Galvanized steel | DIN 6899 / GB/T 5974 |
| 8 | 32 | 48 | Galvanized steel | DIN 6899 / GB/T 5974 |
| 10 | 38 | 58 | Galvanized steel | DIN 6899 / GB/T 5974 |
| 12 | 45 | 68 | Galvanized steel | DIN 6899 / GB/T 5974 |
| 16 | 58 | 88 | Galvanized steel | DIN 6899 / GB/T 5974 |
| 20 | 72 | 108 | Galvanized steel | DIN 6899 / GB/T 5974 |
| 24 | 86 | 128 | Galvanized steel | DIN 6899 / GB/T 5974 |
Equivalent Standards
Where direct equivalents exist (ISO ↔ DIN, ISO ↔ ASME), they are listed on the parent Wire Rope Thimble — ISO / DIN (Series 158) page. Always confirm against the dimensions on this page, since some "equivalent" standards differ in tolerances and head geometry.
When to Specify ISO
Choose ISO for international engineering work and OEM supply where ISO standards are the contractual reference. It is the default modern specification for wire rope thimble — iso / din (series 158).