Specification summary of DIN 6319 as applied to spherical washers & conical seats: the dimensions the standard fixes, the full size range supplied, and the related designations commonly cross-referenced.
DIN 6319 — Scope
DIN 6319 specifies the dimensional requirements for spherical washers & conical seats. 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 spherical washers & conical seats 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 DIN 6319
| Bolt size | Bore d1 (mm) | Outer diameter d2 (mm) | Height h Form C (mm) | Thickness s (mm) | Conical seat height Form D (mm) | Spherical radius R (mm) | Max misalignment | Reference standard |
|---|---|---|---|---|---|---|---|---|
| M5 | 5.5 | 12 | 3.5 | 3.5 | 3.0 | 9 | 3 deg | DIN 6319 C/D |
| M6 | 6.4 | 14 | 3.5 | 3.5 | 3.0 | 10.5 | 3 deg | DIN 6319 C/D |
| M8 | 8.4 | 17 | 4.5 | 4.5 | 3.5 | 12.5 | 3 deg | DIN 6319 C/D |
| M10 | 10.5 | 21 | 5.0 | 5.0 | 4.0 | 15.5 | 3 deg | DIN 6319 C/D |
| M12 | 13 | 24 | 6.0 | 6.0 | 5.0 | 17.5 | 3 deg | DIN 6319 C/D |
| M14 | 15 | 28 | 7.0 | 7.0 | 5.5 | 20.5 | 3 deg | DIN 6319 C/D |
| M16 | 17 | 30 | 7.0 | 7.0 | 6.0 | 22 | 3 deg | DIN 6319 C/D |
| M20 | 21 | 36 | 8.5 | 8.5 | 7.0 | 26.5 | 3 deg | DIN 6319 C/D |
| M24 | 25 | 44 | 10 | 10 | 8.0 | 32 | 3 deg | DIN 6319 C/D |
| M30 | 31 | 56 | 12 | 12 | 10 | 40 | 3 deg | DIN 6319 C/D |
Equivalent Standards
Where direct equivalents exist (ISO ↔ DIN, ISO ↔ ASME), they are listed on the parent Spherical Washers & Conical Seats page. Always confirm against the dimensions on this page, since some "equivalent" standards differ in tolerances and head geometry.
Companion Standards
DIN 6319 controls only the geometry of spherical washers & conical seats. Surface finish is governed by separate finish standards (for example ISO 4042 for electroplating), and corrosion testing by ISO 9227 (neutral salt spray). Mechanical performance is set by the standards specific to this part family, not by ISO 898-1 or ISO 898-2, which apply to bolts, screws and nuts.
