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Power Tools Direct£10.67Visit shop Timco 0840Cbg Carriage Bolts & Hex Nuts - Hot Dipped Galvanised M8 X 40 Box 100
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B&Q£15.25Visit shop B&Q - TimcoCarriage Bolts & Hex NutsHot Dipped Galvanised (Size M8 X 40100 Pieces)
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The TIMco M8 x 40 Carriage Bolts are designed for professional contractors and serious DIYers who require reliable fasteners for timber construction and ironmongery attachment. These bolts provide a high-strength connection with a signature anti-spin shoulder that simplifies one-sided installation, making them ideal for heavy-duty outdoor projects. While their heavy-duty galvanization makes them perfect for external environments, users should note that the Grade 4.8 steel is intended for standard structural fastening and not for high-tensile engineering applications.
| Model Part Number | 0840CBG |
|---|---|
| Brand | TIMco |
While they feature a 500-hour salt spray rating, for direct marine exposure, stainless steel is typically recommended. These are best suited for general outdoor landscaping.
No, these are specifically designed for timber applications. The square shoulder is meant to bite into wood, not hard masonry.
An M8 nut typically requires a 13mm wrench or socket.
Yes, these bolts are fully threaded, allowing for flexibility in how much of the shank is used.
This product is supplied in a pack of 100 pieces.
The square shoulder is not fully seated; use a hammer to tap the head firmly into the wood.
Ensure the total thickness of the materials being joined is less than 40mm; if the bolt does not protrude enough, select a longer bolt size.
You are likely using a drill bit that is too small; increase to a 9mm bit to reduce the stress on the wood grain.
