FASTEN UP

UNDERSTANDING WHAT FASTENER TO USE WHERE CAN MEAN THE DIFFERENCE BETWEEN A RELIABLE BUILD AND ONE THAT’S ALWAYS UP ON JACK STANDS. WE TALK WITH AUTOMOTIVE FASTENER EXPERT PHIL DEAN OF KEY WEST BOLT AND SUPPLY TO GET THE LOW-DOWN ON WHAT OPTIONS ARE AVAILABLE FOR AUTOMOTIVE APPLICATIONS. NORD-LOCKS, CONE LOCKS, K-NUTS, AND BLACK-STEEL CAP SCREWS — BUILD YOUR CAR ONCE AND BUILD IT RIGHT

MARCUS GIBSON, PHIL DEAN

COPPER-COATED LOCKING NUTS Perfect for applications such as manifolds, these are top locking with an ovaled thread. Copper-coated steel ensures that they do not seize, which is a common occurrence with uncoated steel nuts. These nuts are available in sizes M6–M10 and are often used in conjunction with a grade-nine washer on a screw-in stud for exhaust manifolds. SHANKED BOLTS These are used in high-stress applications such as suspension. The strength of shanked bolts lies in the shanked unthreaded part of the bolt, and your local cert man will require at least 80 per cent shank through the bush or joint. It’s worth noting that at least three full threads will need to show past the nut. BRASS MANIFOLD NUTS Although these are not locking nuts, the brass is able to shrink and expand with…

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NZV8 (Digital) - 1 Issue, No 162 November 2018

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