Welcome to the Inert Ordnance Collectors.
Results 1 to 8 of 8
  1. #1
    Premium Member
    Join Date
    May 2010
    Location
    Amersham
    Posts
    185
    Thanks
    165
    Thanked 89 Times in 40 Posts

    French T&P 24/31 1915/16 and T&P 24/31 'A' 1918 thread difference

    Hello all,

    I have a couple of French 'beehive' fuzes, (both inert and FFE), one being a T&P 24/31 1915/1916 with 0-24 sec graduations, the other a 24/31 'A' (elongated) 1918 model, with 0-31 sec graduations, this model used for longer range 'streamlined' 75mm shells.

    But the later 1918 fuze thread is coarser than the earlier model fuze.

    Although this fuze was used on 75mm shells, I have tried it on my French 75's (shrap & HE), but the thread difference prevents it from screwing home in both.
    Am I right in thinking the late war streamlined 75's had a coarser fuze socket thread?
    (I don't have a streamlined 75mm model to check...)
    Any info would be much appreciated.

    Thanks in advance!

  2. #2
    Ordnance Approved
    Join Date
    Nov 2010
    Location
    FRANCE
    Posts
    2,035
    Blog Entries
    1
    Thanks
    1,912
    Thanked 1,575 Times in 725 Posts
    Hello,
    Maybe your fuze is damaged as these fuzes shoud have same thread (thread 24mm/base fuze 31mm)
    (Be careful, common shrapnel, except later, used 22mm/31mm fuzes without adapter (same external shape as T&P 24-31))
    Regards
    Any Live or Dug ordnance shown by me has been disposed of by EOD personnel .

  3. #3
    Premium Member
    Join Date
    May 2010
    Location
    Amersham
    Posts
    185
    Thanks
    165
    Thanked 89 Times in 40 Posts
    Many thanks Minenaz16,
    I'll re check but I'm sure the threads are different. If so, I'll post a couple of pics showing each fuze.
    Thanks again!

  4. #4
    Premium Member
    Join Date
    May 2010
    Location
    Amersham
    Posts
    185
    Thanks
    165
    Thanked 89 Times in 40 Posts
    IMG_1996.jpgIMG_1997.jpg
    Hi minenaz16,
    As mentioned, pics of the 2 fuzes. As you can see, the difference in threads is noticeable, the thread on the right being finer and fitting a 75mm shrap just fine.
    (It may be I've identified these wrongly).
    I was hoping the fuze on the left would fit a 75mm, but not so because of the thread.
    Am I missing something?....
    Thanks in advance.

  5. #5
    Senior Member
    Join Date
    Aug 2010
    Location
    Germany
    Posts
    1,132
    Thanks
    150
    Thanked 739 Times in 421 Posts
    as MINENAZ16 wrote, left 24-31 mm fuze (M23,5x2 thread) and on the right side a 22-31 (M22x1,5 thread) fuze for shrapnel shells. The right fuze never had a gaine but it's still missing it's bottom end.
    Last edited by Alpini; 19th June 2018 at 10:03 PM.

  6. #6
    Premium Member
    Join Date
    May 2010
    Location
    Amersham
    Posts
    185
    Thanks
    165
    Thanked 89 Times in 40 Posts
    Thanks for the info on thread size Alpini, appreciated.
    So, at the expense of making myself look a fool, what shell would the fuze (24-31) on the left in images be fitted to? A search online suggests its use on a 'French 75mm' shell. Having tried it on a HE shell, it fits perfectly. Is that my answer?
    Having little knowledge on French ordnance, I'd always assumed the 75's had the same fuze socket thread regardless of type (chemical, Shrap, HE) so finding this differing thread threw me.
    I have a strong feeling I've overlooked something here, so please excuse my ignorance.
    Many thanks!

  7. #7
    Senior Member
    Join Date
    Aug 2010
    Location
    Germany
    Posts
    1,132
    Thanks
    150
    Thanked 739 Times in 421 Posts
    if we reverse the question: On which shells the 22-31 fits? I would say 65 and 75 mm shrapnel shells (I may get corrected). And the 24-31 fuzes: on most of the french HE shells.

  8. #8
    Premium Member
    Join Date
    May 2010
    Location
    Amersham
    Posts
    185
    Thanks
    165
    Thanked 89 Times in 40 Posts
    Thanks Alpini, thats kind of the conclusion I was reaching. It makes sense.
    Thanks for your help. Something else I've learned....
    Cheers!

 

 

Bookmarks

Posting Permissions

  • You may not post new threads
  • You may not post replies
  • You may not post attachments
  • You may not edit your posts
  •  
Back to top