A guide to finishing washers
How do you use a finishing washer?
Finish washers, or finished washers, as they’re sometimes called, primarily fulfil the need for a clean appearance.
In this article, we'll cover:
How finishing washers are used
If your application, such as a cabinet, has an exposed screw head, the look can detract from the overall piece. Instead, you can use a finish washer. The screw head recesses into the washer to give the cabinet a finished look, hence the name of the washer.
In the line drawing shown on the right, a flat head screw – also called a countersunk screw – is used and sits flush with the washer. For this look, you’ll sometimes see them called flush finishing washers, but an oval screw can also be used. Finishing washers with a more concave shape are sometimes called countersunk finishing washers, also known as metric finishing washers. But the term can also apply to all finishing washers. These also accommodate both flat-head and oval screws. If you’re not sure which screw head to use, you can compare them below.
Which decorative finishing washer?
The different styles shown here give you the same capabilities. These are nylon finishing washers, providing you with:
- Good insulation properties
- Good thermal properties
- Light weight
- Resists corrosion
- Excellent protection for your surface against damage by the tightened screw head
- Colour options: white finish washers or black finish washers available
Materials: metal washers
Now you know the advantages of nylon. What about metal decorative washers for screws? Metal conducts electricity and can add an attractive finish.
|
Stainless-steel finish washers |
Resists corrosion & chemicals. Can be slightly magnetic |
|
Aluminium finish washers |
Lightweight, resists corrosion& is non-magnetic |
|
Bronze finish washers |
Resists corrosion and is non-magnetic |
|
Chrome finishing washers |
Resists corrosion and is non-magnetic |
Finishing washer dimensions
There are no industry standards for finishing washers at this time. Below are the sizes offered by Essentra Components, but you can also use these dimensions as a guideline.
|
Screw size |
Outside diameter (OD) |
Inside diameter (ID) |
Overall height |
Thickness |
||||
|
Max. |
Min. |
Max. |
Min. |
Max. |
Min. |
Max. |
Min. |
|
|
M2.5 |
6.8 mm |
- |
2.7 mm |
- |
2.0 mm |
- |
2.0 mm |
- |
|
M3 |
14.0 mm |
6.5 mm |
3.2 mm |
- |
2.9 mm |
2.2 mm |
2.9 mm |
2.0 mm |
|
M4 |
16.0 mm |
12.0 mm |
5.3 mm |
4.3 mm |
3.5 mm |
2.8 mm |
3.5 mm |
2.2 mm |
|
M5 |
18.0 mm |
10.5 mm |
5.3 mm |
- |
5.0 mm |
3.8 mm |
4.0 mm |
2.8 mm |
|
M6 |
22.0 mm |
12.7 mm |
6.4 mm |
5.0 mm |
4.9 mm |
3.4 mm |
6.0 mm |
3.4 mm |
|
M8 |
20.0 mm |
- |
8.4 mm |
- |
5.0 mm |
4.0 mm |
5.0 mm |
4.0 mm |
|
1/4 |
17.3 mm |
- |
6.6 mm |
- |
4.6 mm |
4.6 mm |
- |
|
|
#8 |
13 mm |
- |
4.3 mm |
- |
2.9 mm |
2.9 mm |
- |
|
|
#10 |
14.6 mm |
- |
5.0 mm |
- |
3.9 mm |
3.9 mm |
- |
|
Download free CADs and try before you buy
Free CADs are available for most solutions, which you can download. You can also request free samples to make sure you’ve chosen exactly what you need. If you’re not quite sure which finishing washer will work best for your application, our experts are always happy to advise you.
Whatever your requirements, you can depend on fast despatch. Request your free samples or download free CADs now.
Questions?
Email us at sales@essentracomponents.co.uk or speak to one of our experts for further information on the ideal solution for your application 0345 528 0474.