DIN6319 Type C Convex Spherical Washers
DIN 6319 Type C Convex Spherical Washers are designed to work with the corresponding concave spherical washer to create a self-aligning bearing arrangement for bolted connections. The convex surface allows the two washers to move relative to each other, helping compensate for angular deviations between the fastener and the bearing surface. This helps the bolt or nut seat more evenly when the mating surfaces are not perfectly perpendicular to the fastener axis.
The Type C convex washer forms one half of the spherical washer pair. When combined with the matching concave washer, the spherical interface allows the fastening point to accommodate a certain degree of angular misalignment without forcing the bolt or nut to sit at an unsuitable angle. This makes the washer set particularly useful for connections where the mounting surface or equipment geometry cannot guarantee a perfectly flat and perpendicular bearing position. DIN 6319 Type C washers are commonly used in machinery, machine tools, fixtures, equipment frames, structural assemblies, and adjustable mounting connections where accurate seating and compensation for angular deviations are important. The washer should be used together with the appropriate matching concave component to achieve the intended self-aligning function.


Specification:
DIN 6319 Type C Convex Spherical Washers are specified by their convex spherical profile, nominal fastener size, outside diameter, thickness, and mating geometry. Type C forms the convex half of the spherical washer arrangement and is intended to work with the corresponding concave washer to accommodate angular deviations in a bolted connection. The dimensional design is matched to the corresponding metric bolt or screw size. When ordering Type C washers, the nominal thread size, washer outside diameter, thickness, and matching concave washer should be checked together to ensure the two components form the intended spherical seating arrangement.
| Item | Specification |
|---|---|
| Standard | DIN6319 |
| Type | Type C |
| Product Type | Convex |
| Function | Self-Aligning/Angular Compensation |
| Mating Component | Corresponding Concave |
| Inner Diamter: | Φ6-Φ48 |
| Hardness: | 39-44HRC |
| Material: | C45 |
| Surface Treatment | Black Oxidation |
| Packaging: | Boxes/cartons into wooden pallets |
Dimension Chart of DIN6319 Spherical Type C Convex Washers:
The DIN 6319 Type C dimension chart provides the key measurements of the convex spherical washer, including the central hole, outside diameter, thickness, and spherical profile. These dimensions determine how the convex washer fits around the corresponding fastener and mates with the concave washer.
When selecting the correct size, the nominal washer size should match the corresponding bolt or screw diameter, while the outside diameter and thickness determine the bearing area and available installation space. The Type C convex washer should be matched with the appropriate concave spherical washer to form the complete self-aligning washer arrangement.

| Mon | Φ6 | Φ8 | Φ10 | Φ12 | Φ14 | Φ16 | Φ20 | Φ24 | Φ30 | Φ36 | Φ42 | Φ48 |
| d max | 6.62 | 8.62 | 10.77 | 13.27 | 15.27 | 17.27 | 21.33 | 25.33 | 31.39 | 37.39 | 43.39 | 50.39 |
| d min | 6.4 | 8.4 | 10.5 | 13 | 15 | 17 | 21 | 25 | 31 | 37 | 43 | 50 |
| dc | 12 | 17 | 21 | 24 | 28 | 30 | 36 | 44 | 56 | 68 | 78 | 92 |
| h1 | 0.7 | 0.6 | 0.8 | 1.1 | 1.2 | 1.3 | 2 | 2.4 | 3.6 | 4.6 | 6.5 | 8 |
| h | 2.3 | 3.2 | 4 | 4.6 | 5 | 5.3 | 6.3 | 8.2 | 11.2 | 14 | 17 | 21 |
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Application of DIN6319 Spherical Convex Washers:
DIN 6319 Type C Convex Spherical Washers are used together with the corresponding concave washer where a bolted connection needs to accommodate angular deviation between the fastener and the bearing surface. The spherical interface allows the washer pair to adjust its seating position while maintaining a suitable bearing surface around the fastener.
Machine Tools and Fixtures
The washer pair is useful for machine tools, machining fixtures, clamping devices, and adjustable tooling where mounting surfaces may not be perfectly perpendicular to the bolt axis. The self-aligning arrangement helps the fastener seat correctly without requiring the mating surface to be precisely re-machined.
Machinery and Equipment Assemblies
DIN 6319 spherical washers can be incorporated into machinery frames, equipment supports, brackets, mounting points, and mechanical assemblies where angular deviations may occur between the bolt and the component being fastened. The spherical interface provides greater flexibility than a conventional flat washer in these connections.
Structural and Adjustable Connections
The washer pair is also suitable for steel structures, adjustable supports, frames, and bolted connections with inclined or uneven bearing surfaces. By allowing the seating angle to adapt, the spherical washer arrangement can help maintain more uniform contact between the fastener and the connected component.
