ISO 7093-1:2000
ISO 7093-1 identifies the large series in product grade A. Part 2 covers grade C; do not merge the two without checking tolerances.
ISO 7093-1 · 2000
Large-series plain washer
A broad bearing surface spreads clamping force over soft materials or large clearance holes. Check thickness and actual support: a larger outside diameter alone does not establish the joint capacity.
DIN 9021
- Dimensional range
- M3–M36
- Series
- Large · without chamfer
- Configuration
- 200 HV / 300 HV
- References
- DIN 9021
Technical drawing and dimensional range
Large series, product grade A, nominal sizes 3–36 mm. The nominal size identifies the mating screw; bore, outside diameter and thickness are separate dimensions. Enquire about other sizes and geometries.
Dimensions in mm. Identification drawing, not a manufacturing drawing.
| M | d1 min. | d2 max. | s |
|---|---|---|---|
| 3 | 3.2 | 9 | 0.8 |
| 3.5 | 3.7 | 11 | 0.8 |
| 4 | 4.3 | 12 | 1 |
| 5 | 5.3 | 15 | 1 |
| 6 | 6.4 | 18 | 1.6 |
| 8 | 8.4 | 24 | 2 |
| 10 | 10.5 | 30 | 2.5 |
| 12 | 13 | 37 | 3 |
| 14 | 15 | 44 | 3 |
| 16 | 17 | 50 | 3 |
| 18 | 19 | 56 | 4 |
| 20 | 21 | 60 | 4 |
| 22 | 23 | 66 | 5 |
| 24 | 25 | 72 | 5 |
| 27 | 30 | 85 | 6 |
| 30 | 33 | 92 | 6 |
| 33 | 36 | 105 | 6 |
| 36 | 39 | 110 | 8 |
Limits and tolerances
| M | d1 max. | d2 min. | s min. | s max. |
|---|---|---|---|---|
| 3 | 3.38 | 8.64 | 0.7 | 0.9 |
| 3.5 | 3.88 | 10.57 | 0.7 | 0.9 |
| 4 | 4.48 | 11.57 | 0.9 | 1.1 |
| 5 | 5.48 | 14.57 | 0.9 | 1.1 |
| 6 | 6.62 | 17.57 | 1.4 | 1.8 |
| 8 | 8.62 | 23.48 | 1.8 | 2.2 |
| 10 | 10.77 | 29.48 | 2.3 | 2.7 |
| 12 | 13.27 | 36.38 | 2.7 | 3.3 |
| 14 | 15.27 | 43.38 | 2.7 | 3.3 |
| 16 | 17.27 | 49.38 | 2.7 | 3.3 |
| 18 | 19.33 | 55.26 | 3.7 | 4.3 |
| 20 | 21.33 | 59.26 | 3.7 | 4.3 |
| 22 | 23.52 | 64.8 | 4.4 | 5.6 |
| 24 | 25.52 | 70.8 | 4.4 | 5.6 |
| 27 | 30.52 | 83.6 | 5.4 | 6.6 |
| 30 | 33.62 | 90.6 | 5.4 | 6.6 |
| 33 | 36.62 | 103.6 | 5.4 | 6.6 |
| 36 | 39.62 | 108.6 | 7 | 9 |
Hardness is expressed in HV, not as a bolt property class. Steel: 200 HV or 300 HV; A2/A4 stainless: 200 HV. For large holes or yielding supports, also assess bending and bearing pressure.
Materials and property classes
| Material | Class / hardness | Configurable range | Supply |
|---|---|---|---|
| Steel to mechanical specification | 200 HV | M3–M36 | On request |
| Steel to mechanical specification | 300 HV | M3–M36 | On request |
| A2 stainless steel | 200 HV | M3–M36 | On request |
| A4 stainless steel | 200 HV | M3–M36 | On request |
Other materials and specifications on request
For requirements beyond the tabulated combinations, enquire about aluminium, brass, nylon, duplex, superduplex or an ASTM specification. Alloy or grade, dimensions, mechanical requirements and finish are defined for the enquiry; the geometric reference does not automatically imply conformity with the product standard.
Enquire about another material or ASTM specification
Finishes and treatments
| Finish | Material | Class / hardness | M |
|---|---|---|---|
| Plain / as manufactured | Steel to mechanical specification | 200 HV | M3–M36 |
| Plain / as manufactured | Steel to mechanical specification | 300 HV | M3–M36 |
| Plain / as manufactured | A2 stainless steel | 200 HV | M3–M36 |
| Plain / as manufactured | A4 stainless steel | 200 HV | M3–M36 |
Select the finish for the material/property-class combination. Hydrogen relief and lubrication are separate process requirements, not certificates and not implied by the coating name.
ISO, DIN and UNI: key differences
DIN 9021
Related commercial reference. Neither 100 HV versions nor non-series sizes become ISO 7093-1 merely through resemblance: check dimensions, hardness and specification.
Documentation
Download Dueemme data sheet ↓| Document | Status |
|---|---|
| Declaration of conformity | Subject to order agreement |
| Material certificate | Subject to order agreement |
| EN 10204 2.2 test report | Subject to order agreement |
| EN 10204 3.1 inspection certificate | Subject to order agreement |
| Dimensional inspection report | Subject to order agreement |
| Coating report | Subject to order agreement |
| Other documentation | Subject to order agreement |
Batch documents are not automatically included: specify your requirements in the RFQ.
Mating components
Check bore size, bearing surface, hardness and materials throughout the connection.
The standard associates 200 HV with hexagon bolts up to 8.8 and nuts up to 8; 300 HV with bolts up to 10.9 and nuts up to 10. These are mating criteria, not a certified joint load rating.
Application sectors
The size you need, including custom specifications
Other diameters, lengths, materials and finishes can be assessed on request. For dedicated production, we agree geometry, requirements and minimum quantities with the customer.
Send your specification →Configure your enquiry
Selections follow the technical combinations in this data sheet. Quantities, delivery terms and documents will be agreed in the quotation.