MR-HIPPO Posted November 4, 2018 Share Posted November 4, 2018 (edited) I ordered a new Bearmach wiper switch, it is the type with the latching intermittent position ( PRC7370 ) The one i removed was held in place by two small bolts / machine screws that passed through the metal bracket behind the steering wheel and screwed into the metal switch housing. Upon trying to fit the new switch it became apparent that the mounting screw / bolt holes are not threaded. Am I missing something here, or should there be threads in these holes, as per the switch I removed? Without the threads, I am not sure how I could mount this. Many thanks, Hippo Edited November 4, 2018 by MR-HIPPO Quote Link to comment Share on other sites More sharing options...
neil110 Posted November 5, 2018 Share Posted November 5, 2018 If the body of your existing switch was threaded, then the replacement switch should also be threaded. It looks like the switch you have has missed a stage during the manufacturing process. I would return it to the vendor, explaining the problem. Then, hopefully, they won't sent you another with the same defect. Quote Link to comment Share on other sites More sharing options...
MR-HIPPO Posted November 5, 2018 Author Share Posted November 5, 2018 To answer my own question: I have just managed to screw the two bolts / machine screws into the un-threaded holes and mount the switch. Quote Link to comment Share on other sites More sharing options...
Bowie69 Posted November 5, 2018 Share Posted November 5, 2018 Was about to say, are you sure it doesn't use self-tapping bolts? Perhaps so Quote Link to comment Share on other sites More sharing options...
Simon Smith Posted November 7, 2018 Share Posted November 7, 2018 Common on alloy components in garden machinery. They tend to use self tapping bolts for almost everything now, the most common ones look like normal bolts but are slightly triangular in cross section. Quote Link to comment Share on other sites More sharing options...
MR-HIPPO Posted November 7, 2018 Author Share Posted November 7, 2018 Thanks guys. That would explain it. I have not come across these before They did look like normal bolts to me. Very small, around 3mm in diameter but did not seem to have a metric thread or head size. It seems I have learnt something new today. Sneaky. Quote Link to comment Share on other sites More sharing options...
Bowie69 Posted November 7, 2018 Share Posted November 7, 2018 This image gives an idea of what is often done for self tapping *bolts*: http://www.americanfastener.com/images/techspec/302c.gif Quote Link to comment Share on other sites More sharing options...
MR-HIPPO Posted November 7, 2018 Author Share Posted November 7, 2018 Thank you. Quote Link to comment Share on other sites More sharing options...
Bowie69 Posted November 7, 2018 Share Posted November 7, 2018 Yes, sorry, not sure why it didn't embed first time.... Quote Link to comment Share on other sites More sharing options...
bgpmonster Posted October 27, 2019 Share Posted October 27, 2019 What size are the self tapping screws Quote Link to comment Share on other sites More sharing options...
cackshifter Posted October 28, 2019 Share Posted October 28, 2019 They used to be called 'taptite' screws Quote Link to comment Share on other sites More sharing options...
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