Stud manufactured to T 15389 are dimensioned by the size table reproduced on this page. The standard fixes geometry and tolerances only; material and property class are assigned by ISO 898-1/898-2, and surface finish by separate finish standards.
T 15389 — Scope
T 15389 specifies the dimensions and tolerances of stud — gb/t 15389 / din 939 (series 096). 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
T 15389, alongside the related GB/T 15389 / DIN 939 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 T 15389
| Thread size | Pitch (mm) | Length L (mm) | Engagement depth bm (mm) | Material | Reference standard |
|---|---|---|---|---|---|
| M6 | 1.0 | 50 | 8 | Cl. 8.8 alloy steel | DIN 939 / GB/T 901 |
| M8 | 1.25 | 60 | 10 | Cl. 8.8 alloy steel | DIN 939 / GB/T 901 |
| M10 | 1.5 | 80 | 15 | Cl. 8.8 alloy steel | DIN 939 / GB/T 901 |
| M12 | 1.75 | 100 | 18 | Cl. 8.8 alloy steel | DIN 939 / GB/T 901 |
| M14 | 2.0 | 120 | 21 | Cl. 8.8 alloy steel | DIN 939 / GB/T 901 |
| M16 | 2.0 | 150 | 24 | Cl. 8.8 alloy steel | DIN 939 / GB/T 901 |
| M20 | 2.5 | 180 | 30 | Cl. 8.8 alloy steel | DIN 939 / GB/T 901 |
| M24 | 3.0 | 200 | 36 | Cl. 8.8 alloy steel | DIN 939 / GB/T 901 |
| M30 | 3.5 | 240 | 45 | Cl. 8.8 alloy steel | DIN 939 / GB/T 901 |
| M36 | 4.0 | 280 | 54 | Cl. 8.8 alloy steel | DIN 939 / GB/T 901 |
Equivalent Standards
Where direct equivalents exist (ISO ↔ DIN, ISO ↔ ASME), they are listed on the parent Stud — GB/T 15389 / DIN 939 (Series 096) page. Always confirm against the dimensions on this page, since some "equivalent" standards differ in tolerances and head geometry.
When to Specify T 15389
Choose T 15389 for international engineering work and OEM supply where ISO standards are the contractual reference. It is the default modern specification for stud — gb/t 15389 / din 939 (series 096).