Solid Rivets manufactured to DIN 661 follow a specific scope. This page summarizes that scope, lists every dimension the standard fixes, and points to the most common cross-references.
DIN 661 — Scope
DIN 661 specifies the dimensions and tolerances of solid rivets. 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
DIN 661, alongside the related ISO 1051 / DIN 660 / DIN 661 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 DIN 661
| Nominal diameter (mm) | Common length range (mm) | Head diameter dk (mm) | Head height k (mm) | Countersunk head dia (mm) | Reference standard |
|---|---|---|---|---|---|
| 1.0 | 2~10 | 2.0 | 0.7 | 1.9 | ISO 1051 / DIN 660 (round) / DIN 661 (countersunk) |
| 1.2 | 2~12 | 2.4 | 0.8 | 2.2 | ISO 1051 / DIN 660 (round) / DIN 661 (countersunk) |
| 1.6 | 3~16 | 3.2 | 1.0 | 3.0 | ISO 1051 / DIN 660 (round) / DIN 661 (countersunk) |
| 2.0 | 3~20 | 4.0 | 1.3 | 3.8 | ISO 1051 / DIN 660 (round) / DIN 661 (countersunk) |
| 2.5 | 4~25 | 5.0 | 1.6 | 4.7 | ISO 1051 / DIN 660 (round) / DIN 661 (countersunk) |
| 3.0 | 4~30 | 6.0 | 1.9 | 5.6 | ISO 1051 / DIN 660 (round) / DIN 661 (countersunk) |
| 4.0 | 5~40 | 8.0 | 2.5 | 7.5 | ISO 1051 / DIN 660 (round) / DIN 661 (countersunk) |
| 5.0 | 6~50 | 10.0 | 3.1 | 9.4 | ISO 1051 / DIN 660 (round) / DIN 661 (countersunk) |
| 6.0 | 8~60 | 12.0 | 3.8 | 11.2 | ISO 1051 / DIN 660 (round) / DIN 661 (countersunk) |
| 8.0 | 10~80 | 16.0 | 5.0 | 15.0 | ISO 1051 / DIN 660 (round) / DIN 661 (countersunk) |
| 10.0 | 14~100 | 20.0 | 6.3 | 18.7 | ISO 1051 / DIN 660 (round) / DIN 661 (countersunk) |
| 12.0 | 16~120 | 24.0 | 7.5 | 22.5 | ISO 1051 / DIN 660 (round) / DIN 661 (countersunk) |
| 14.0 | 18~140 | 28.0 | 8.8 | 26.2 | ISO 1051 / DIN 660 (round) / DIN 661 (countersunk) |
| 16.0 | 20~160 | 32.0 | 10.0 | 30.0 | ISO 1051 / DIN 660 (round) / DIN 661 (countersunk) |
| 18.0 | 22~180 | 36.0 | 11.0 | 34.0 | ISO 1051 / DIN 660 (round) / DIN 661 (countersunk) |
| 20.0 | 25~200 | 40.0 | 12.5 | 37.5 | ISO 1051 / DIN 660 (round) / DIN 661 (countersunk) |
| 22.0 | 28~200 | 44.0 | 13.8 | 41.2 | ISO 1051 / DIN 660 (round) / DIN 661 (countersunk) |
| 25.0 | 32~200 | 50.0 | 15.6 | 47.0 | ISO 1051 / DIN 660 (round) / DIN 661 (countersunk) |
Equivalent Standards
Where direct equivalents exist (ISO ↔ DIN, ISO ↔ ASME), they are listed on the parent Solid Rivets page. Always confirm against the dimensions on this page, since some "equivalent" standards differ in tolerances and head geometry.
Companion Standards
DIN 661 controls only the geometry of solid rivets. The mechanical strength is set by ISO 898-1 (bolts and screws) or ISO 898-2 (nuts); the surface finish is governed by separate finish standards (e.g. ISO 4042 for electroplating). For corrosion testing, the relevant document is ISO 9227 (neutral salt spray).