M5 rubber well nuts – for installing solar panels
Made from soft neoprene rubber with a bonded brass thread insert, M5 well nuts are a reliable, vibration-resistant fastening solution for cavity walls, fairings, screens, and other hollow materials. The M5 well nuts are provided with rubber washers and BZP 25mm allan bolts.
Whether you’re fitting out a camper or replacing a fairing on a motorcycle, they’ll hold firm and stay put.
Why they’re a solid choice:
- Soft neoprene rubber with bonded brass insert
- Vibration and corrosion resistant
- Flange holds fixing flush to the surface
- Compresses securely – even in irregular holes
- Synthetic rubber stands up to tougher conditions
- No access needed behind the panel
Using well nuts to mount your solar panels with a mechanical connection
Attaching solar panels with a mechanical connection ensures they are securely fixed in place. However, it can also be susceptible to water ingress. To prevent this, we recommend using well nuts to form a watertight connection. It is important to test each hole for leaks to ensure a secure and long-lasting connection.
Use a 9mm drillbit to attach the well nuts.
Looking for other solar mounting products?
Check out our full range of solar accessories ☀️
Products that give back
For every product purchased from Nohma, we make a donation to The Honnold Foundation, to provide solar power to underprivileged communities. If you want your electrical system to have more of a positive impact, purchasing your components from us at Nohma will mean you can give back as well as powering your off-grid system.
Product SKU: 117853 x10




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