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Blueperry agriculture (UK)£1.74Visit shop Metalmate® Metalmate Roofing Bolt & Nut Zp M5 X 16Mm Memrbn0516
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The METALMATE Roofing Bolt & Nut (M6 x 70mm) is a reliable fastening solution designed for construction professionals and DIY enthusiasts who require secure, weather-resistant connections for roofing and external building materials. Featuring a large truss head for superior grip and a zinc-plated finish for enhanced corrosion resistance, these bolts offer long-term durability in exposed environments, though users should ensure the 70mm length is appropriate for the thickness of their specific roofing substrate to avoid excessive protrusion.
| Colour | Silver |
|---|---|
| Model Part Number | MEMRBN0670 |
| Brand | METALMATE |
While the zinc plating offers good corrosion resistance, they are primarily designed for general outdoor use. For constant salt-water exposure, stainless steel alternatives are recommended.
This set includes the bolt and the square nut. It does not typically include rubber washers or sealing gaskets.
You will need a screwdriver or tool to fit the truss head and a suitable wrench or spanner to tighten the square nut.
They can be installed using power tools, but caution is advised to use low torque settings to prevent overtightening or stripping the thread.
This is an M6 bolt, meaning the nominal shank diameter is 6mm.
Yes, you can paint the bolt heads using a metal-compatible primer and paint if you need them to match a specific roof color.
Ensure the hole is not too large and check that the square nut is properly seated against the underside of the material.
Check for debris in the thread or potential damage to the bolt tip; clean threads with a wire brush if necessary.
If the bolt is too long for the application, use a metal hacksaw to trim the excess or verify if a shorter variant like the 60mm or 50mm model is more appropriate.
Installation requires basic hand tools: a screwdriver for the bolt head and a wrench or pliers to hold the square nut. Always measure the total depth of the materials you are fastening to ensure the 70mm bolt provides sufficient thread engagement without excessive protrusion.
Regarding care, while the zinc finish is durable, avoid using power tools with high torque settings which may strip the threads or damage the plating. If installing in highly corrosive environments, consider applying a thin layer of weather-resistant grease to the threads prior to installation to extend the service life of the fastener.
