Product and application brief
This family uses a shaped washer and a matching seat to accommodate non-parallel clamping faces. Specify whether the enquiry concerns the spherical upper washer, the lower seat or both components. A seat with a similar bore is not automatically compatible with any curved washer.
Product forms and reference names
| Choice or field | What to identify |
|---|---|
| Type C spherical washer | Ganter identifies C as the spherical washer. Specify its mating surface and selected counterpart, not just the bolt designation. |
| Type D seat | The D catalogue form is the regular-footprint dished seat. Confirm the supporting surface and full selected drawing. |
| Type G seat | Ganter describes an enlarged outer-footprint G seat, used particularly with elongated openings. Opening geometry and support remain application inputs. |
| Spherical-ended fixture nut arrangement | The JW Winco catalogue distinguishes a DIN 6330 type B spherical-ended nut mating with a D or G seat without a separate C washer. This is a specific arrangement, not permission to omit components from other assemblies. |
A mating pair, not a single wedge
A beveled washer presents a fixed sloping bearing face. Here the shaped upper bearing part and lower seat form a different interface. Retain the selected pair identity, surface geometry and stack arrangement; neither matching bores nor the word self-aligning proves interchangeability.
Support footprint and clearance
Record a round hole, slot or larger opening and the available supporting area. Include clearance around the seat and the required assembled height. Do not substitute a wider seat without checking the actual drawing and application; outside diameter alone does not establish support adequacy.
DIN 6319 identity and edition status
DIN Media lists DIN 6319:2001-10, Spherical washers, conical seats, as withdrawn. The record also identifies its 2007 correction. Manufacturer catalogues still use DIN 6319 as a product-family label, but that is not evidence of a current standard, an approved replacement or FastenerBridge conformity. Agree the controlling edition or drawing before purchase; normative tables have not been consulted here.
Separate alignment from performance
The reference construction does not establish locking, sealing, spring travel, permissible angular movement, load rating or tightening torque for a proposed joint. Material, heat treatment, finish and installation requirements belong to the exact selected product and engineering specification, not a generic image.
Specification fields
| Choice or field | What to identify |
|---|---|
| Component identity | Upper washer, lower seat or complete pair; form C/D/G where applicable, exact catalogue identity or controlled drawing/revision. |
| Geometry | Bore, outside footprint, thickness, mating-profile details and assembled height with tolerances and units supplied by the selected specification. |
| Counterpart and stack | Bolt/stud and nut arrangement, upper bearing component and matching lower seat; identify any spherical-ended nut explicitly. |
| Support | Opening shape and size, available bearing area, surrounding clearance and non-parallel-face conditions. |
| Material and condition | Material, heat treatment, finish and surface requirements for each component separately; no default hardness or corrosion guarantee. |
| Application criteria | Required alignment range, loads and assembly procedure from the responsible design or exact product instructions, not universal values. |
| Order and evidence | Quantity of single components or pairs, size list, drawings and requested inspection documents; actual supply and compliance remain to be confirmed. |
Common product questions
Are these the same as beveled washers?
No. A single fixed wedge and a shaped washer/seat interface are different constructions. Choose by the mating geometry and application drawing, not visual similarity.
Is DIN 6319:2001-10 a current standard?
The official DIN Media record marks that edition withdrawn. Catalogue use of the number is identification only; agree the exact controlling document and do not infer replacement or conformity.
Can any spherical washer and conical seat be mixed?
No universal interchangeability is established. Specify the exact paired geometry and counterpart, and obtain product-specific alignment, loading and assembly requirements.
Related product choices
- Beveled washers: fixed sloping bearing faces
- Flat washers: a different bearing geometry
- Hex nuts: identify the separate nut arrangement
Product references
References checked 9 October 2026 identify structures, not FastenerBridge stock, certification or brand affiliation. Final requirements follow the selected specification. No universal dimensions, load rating or tightening torque is stated.