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Left Hand Thread Lathe Collets

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Keith Bishop	31/12/2016 16:08:23
2 forum posts	Can anybody help me!! I have a large number of lathe collets (109). Having checked the dimensions i believe them to be "Type 5C". However, they have a 12TPI Left Hand thread. 48 of them are metric, in a fitted wooden draw and are marked with interlocking "C"s (possibly Crawford Collets) and the numbers 9252. They range from 1 to 25mm dia in 1/2 mm steps (8.5mm is missing). My wife has done a lot of research online but cannot find anything with Left Hand Threads. What sort of collet chuck would they fit? Are they rare? Are they worth anything? Any information would be appreciated Regards Keith
Chris Evans 6	31/12/2016 17:01:58
2156 forum posts	I have a big selection of 5C collets some 70 years old (they came with my 1942 vintage South Bend lathe) and some recently purchased. Never seen any with left hand thread, new standard 5C collets can be bought for sub £6 each.
John Reese	31/12/2016 17:05:20
1071 forum posts	The 12 pitch thread is odd too. Standard 5 C's have a fine thread, 26 tpi if I remember correctly.
Nick Hulme	31/12/2016 17:08:40
750 forum posts 37 photos	Crawford Trugrip rings a bell.
JasonB	31/12/2016 17:10:15
25215 forum posts 3105 photos 1 articles	Made to fit a Crawford Truegrip Collet chuck, would be of value to someone who has a chuck and few or no collets
Piero Franchi	08/05/2017 17:30:30
124 forum posts 60 photos	HI Keith I know this is a old topic, but if you still have these collets, plz contact me Piero
Keith Bishop	09/05/2017 11:05:33
2 forum posts	Hi Piero. I have sold most of them on ebay. I only have 6 left and they are currently on ebay item no. 361973317415 if you are interested. Regards Keith

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