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Cyril Bonnett	16/04/2010 19:57:17
250 forum posts 1 photos	Can anyone tell me the thread and size of the levelling screws/bolts in the myford raising blocks?
V8Eng	16/04/2010 20:41:42
1826 forum posts 1 photos	I think they are BSF thread, not too sure about the size. Will try and check in the workshop tomorrow. Unless somebody else can give a definitive answer before then. Edited By V8Eng on 16/04/2010 20:43:58
Peter G. Shaw	16/04/2010 20:42:19
1531 forum posts 44 photos	Tubal Cain in his book Workholding in the Lathe (WSP15) describes making his own jacking screws. I assume that these will be similar to what you want. Regards, Peter G. Shaw
V8Eng	16/04/2010 21:39:37
1826 forum posts 1 photos	Just a thought: are you looking to replace an original stud? Thread size might depend on whether you have actual Myford blocks. Possibly also depend on age of machine involved. Edited By V8Eng on 16/04/2010 21:40:28
Chris Trice	16/04/2010 22:31:01
1376 forum posts 10 photos	Some later machines use metric threads throughout so worth checking with some pitch gauges.
mgj	16/04/2010 22:43:12
1017 forum posts 14 photos	Mine are 25odd year old originals. The hold down bolts (long studs) are 5/16 BSF - both ends The hollow jacking screws are .525 dia across the threads. They are imperial fine but not enough is showing to count the threads. I was expecting 1/2 BSF. The spanner flats fit the original 5/16 whit spanner but the threads are nowhere near coarse enough for Whit. I'm afraid the raising blocks don't feature in my parts list. Give Myfords a bell on Monday. They aren't open Fri pm or Sat am 0115 925 4222
Cyril Bonnett	17/04/2010 13:09:34
250 forum posts 1 photos	Thanks all, went to a local engineering company, they are 9/16 BSF

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