dlh98370 Posted July 14, 2024 Posted July 14, 2024 I need to purchase a tap to clean up the threads in a throttle shaft for a DHLA40. It's 4mm but I am unsure of the thread pitch.
JohnD Posted July 15, 2024 Posted July 15, 2024 A thread pitch guage was one of the most useful tools I ever bought. Lots on eBay for less than a tenner; https://www.ebay.co.uk/sch/i.html?_nkw=thread+pitcj+guage+imperial&_trksid=m5467.l1311&_odkw=thread+pitcj+guage John
Gt64fun Posted July 15, 2024 Posted July 15, 2024 If you buy a metric tap set, it will probably have a set of pitch gauges in it! Ian
Nick Jones Posted July 15, 2024 Posted July 15, 2024 https://www.dellorto.co.uk/shop/dellorto-car-carburettors-parts/parts/drla-parts/butterfly-screw/ This says M4x0.7, which is the standard (and only) metric thread at that size.
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