Controlling dimensions to DIN 7603 Type A, with tolerances and fit.
M10 Aluminum Flat Sealing Washers dimensions to DIN 7603 Type A: inside diameter 10.2 mm, outside diameter 13.4 mm, thickness 1 mm.
Figures are nominal values from the governing standard. Confirm against the tolerance class for your application before machining or ordering.
M10 Aluminum Flat Sealing Washers (DIN 7603 Type A): the row from the product table, what the nominal bolt size controls in the assembly, and the notes that matter when specifying this size.
| For bolt size | Pitch (mm) | Inside diameter (mm) | Outside diameter (mm) | Thickness options (mm) | Material | Reference standard |
|---|---|---|---|---|---|---|
| M10 | 1.0 | 10.2 | 13.4 | 1.0 / 1.5 / 2.0 | aluminum | DIN 7603 Type A |
A M10 flat washer pairs with a M10 bolt/screw and matching M10 nut.
Customize the parameters below — every spec field is editable, and the drawing redraws to match the values you choose. Changing the size will snap the other fields to that size's standard values; you can then override any individual value.
The form below follows the current technical drawing configuration. Change the drawing values above and the request details update automatically.
| For bolt size | Pitch (mm) | Inside diameter (mm) | Outside diameter (mm) | Thickness options (mm) | Material | Reference standard |
|---|---|---|---|---|---|---|
| M8 | 1.0 | 8.2 | 11.4 | 1.0 / 1.5 / 2.0 | aluminum | DIN 7603 Type A |
| M10 | 1.0 | 10.2 | 13.4 | 1.0 / 1.5 / 2.0 | aluminum | DIN 7603 Type A |
| M12 | 1.5 | 12.2 | 15.9 | 1.0 / 1.5 / 2.0 | aluminum | DIN 7603 Type A |
| M14 | 1.5 | 14.2 | 17.9 | 1.0 / 1.5 / 2.0 | aluminum | DIN 7603 Type A |
| M16 | 1.5 | 16.2 | 19.9 | 1.0 / 1.5 / 2.0 | aluminum | DIN 7603 Type A |
| M20 | 1.5 | 20.2 | 23.9 | 1.0 / 1.5 / 2.0 | aluminum | DIN 7603 Type A |
| M30 | 1.5 | 30.3 | 35.9 | 1.0 / 1.5 / 2.0 | aluminum | DIN 7603 Type A |
| M48 | 2.0 | 48.3 | 54.9 | 1.0 / 1.5 / 2.0 | aluminum | DIN 7603 Type A |
Where Aluminum Flat Sealing Washers are used, and what decides the specification in each case. Stocked from M8 to M48 (nominal bolt size).
This part is cold-formed, threaded, heat-treated and finished in-house. The stages below are where its class and finish are actually decided.
Wire rod is drawn to size and cold-formed into blanks. Forming rather than cutting keeps the grain flow continuous around the head, which is where a bolt is most likely to fail.
Head dimensions and under-head radius checked at set-up and per shift.
Threads are rolled between hardened dies rather than cut. Rolled threads are stronger in fatigue than cut threads and hold pitch and flank angle far more consistently across a batch.
Go / no-go ring gauges to ISO 965 tolerance class 6g.
Quench-and-temper brings carbon and alloy steel to the property class ordered — 8.8, 10.9 or 12.9 — with the furnace charge tracked so a finished lot can be traced back to it.
Core hardness and tensile tested per lot to ISO 898-1.
Zinc, zinc-nickel, hot-dip galvanizing, black oxide, phosphate and Dacromet, selected against the service environment rather than against the price list.
Coating thickness and neutral salt spray hours to ISO 9227.
For a flat washer, the outside diameter (the bearing surface) and the thickness control how the load is spread under the head and how much elastic preload is preserved. The inside diameter must clear the bolt body but not be so large that the head bears mostly on the washer's outer rim.
For M10 the standard coarse pitch is 1.5 mm — this is the value used for Aluminum Flat Sealing Washers.
Use a 11 mm clearance hole (ISO 273 medium) for through-fixing, or a 8.5 mm tapping drill for a coarse M10 thread.
Use the technical drawing on this page to pick the exact configuration, then submit it with the quote form. We respond within one business day.