Whitworth? Luxury! My first motorcycle, a Triumph, had nuts with a BSP thread - British Standard Pipe.
73, Pete G4PLZ/F5VNB On 09/04/2011 17:02, Kevin Rock wrote: > No one has mentioned the other set of tools required to work on British > bikes: Whitworth. Yes, I have three sets of tools to work on American, > Japanese, and British gear. Now tell me how the threads are the same on > metric bolts from across the world. From what I have learned there is no > standard for metric threads. German and Japanese equipment do not > necessarily use interchangeable hardware. > 73, > Kevin. KD5ONS > > > On Sat, 09 Apr 2011 07:43:40 -0700, Matt Zilmer<[email protected]> > wrote: > >> Small addition / correction. >> >> Nearly all consumer electronics is produced using metric hardware, >> mainly because it comes from Asian sources. With the exception of the >> odd drive types (Torx, one-way, etc.), the sizes roughly approximate >> the American standards in terms of TPI, torque settings, etc. >> >> As Don points out, one has to have a double set of tools for some of >> this, but generally a screwdriver is a screwdriver. Nutdrivers and >> sockets, nope. >> >> I was forced many years ago to buy dual sets of combination wrenches >> and 3/8" / 1/2" inch sockets for automotive work I did as a hobby. If >> you do this, buy Craftsman or Snap On. >> >> 73, >> matt >> >> >> On Sat, 09 Apr 2011 08:43:22 -0400, you wrote: >> >>> Pf, >>> >>> Most of the screws in the K3 are #4, and the thread size is in turns per >>> inch (4-40). These are standard sizes here in the US - no metric size >>> hardware is used in the K3 as far as I know. >>> You have the reference link correct. >>> >>> There is also some #2 hardware used in the K3 - it is the smaller >>> diameter, and has 56 threads per inch (2-56). >>> >>> #6 hardware has a larger diameter and will have 32 threads per inch >>> (6-32) >>> >>> The length of the screw threads will change depending on whether the >>> head is flat or not. For flathead screws, measure the entire length of >>> the screw including the head. For the others, measure from the head to >>> the end of the screw. >>> >>> The washers are designated by the size of the hole. Other dimensions >>> may exist if important, but often just the hole size and the washer type >>> (flat, internal tooth lockwasher, split lockwasher) suffice for the >>> description. >>> >>> Sorry for those in "Metric Land" who do not understand the US hardware >>> system. We tried to go metric many years ago and failed. Most of the >>> auto industry is now metric, but for small hardware, the US sizes >>> predominate here. We have to keep two sets of wrenches if we are to >>> have a complete set. >>> >>> 73, >>> Don W3FPR >>> >>> On 4/9/2011 1:51 AM, Pierfrancesco Caci wrote: >>>> Hello, >>>> while lenght of the screws is given in the manual in mm also, I'm >>>> trying to figure out how to read the screw and washer diameters >>>> that are given as "4-40" and such. Is this the relevant standard? >>>> http://en.wikipedia.org/wiki/Unified_Thread_Standard >>>> >>>> For washers, the first number should be the size of the hole, right? >>>> >>>> Pf >>>> >>>> >>>> >>> ______________________________________________________________ >>> Elecraft mailing list >>> Home: http://mailman.qth.net/mailman/listinfo/elecraft >>> Help: http://mailman.qth.net/mmfaq.htm >>> Post: mailto:[email protected] >>> >>> This list hosted by: http://www.qsl.net >>> Please help support this email list: http://www.qsl.net/donate.html >> ______________________________________________________________ >> Elecraft mailing list >> Home: http://mailman.qth.net/mailman/listinfo/elecraft >> Help: http://mailman.qth.net/mmfaq.htm >> Post: mailto:[email protected] >> >> This list hosted by: http://www.qsl.net >> Please help support this email list: http://www.qsl.net/donate.html > > ______________________________________________________________ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:[email protected] This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html
