hawkdriver Posted February 3, 2013 Share #1 Posted February 3, 2013 Anyone know what the thread size is for the WWII Mk II grenades? I would assume that they are all the same, or are they? Link to comment Share on other sites More sharing options...
Greaser Posted February 4, 2013 Share #2 Posted February 4, 2013 9/16 12 (coarse) Top thread is the same as the bottom thread. Link to comment Share on other sites More sharing options...
Coconut Harry Posted February 8, 2013 Share #3 Posted February 8, 2013 9/16 12 (coarse) Top thread is the same as the bottom thread. This is correct for all US WW2 "MkII" grenades....but in case anyone is interested in small history details, our first "pineapples" the WWI "MkI" 32 segment (8 rows of 4 segments) grenade body had a smaller 3/8" filling hole on the bottom, and 9/16" fuze threads, and then in mid to late WWI, the same 32 segment bodies were changed slightly in shape and also to a 9/16" filling hole, (the same as the fuze threads).... .....and then again.....in very late WWI they changed the grenade bodies completely to the now familiar 40 segment bodies (8 rows of 5 frag segments) the type that most people for the last 80+yrs associate with US "pineapples" ..... all 3 WWI types are shown below....(although I had to make 3 posts to show the pics...I wish some time the Admins. might consider allowing more than one photo per post...just a suggestion ) Regards Link to comment Share on other sites More sharing options...
Coconut Harry Posted February 8, 2013 Share #4 Posted February 8, 2013 another photo........ Link to comment Share on other sites More sharing options...
Coconut Harry Posted February 8, 2013 Share #5 Posted February 8, 2013 another photo....the first type MkII 40 segment body.... 9/16 filler hole and fuze threads... Link to comment Share on other sites More sharing options...
Coconut Harry Posted February 8, 2013 Share #6 Posted February 8, 2013 9/16"x12 bottom plug WWI narrow base early "MkII" 40 segment body...the first MkII bodies Link to comment Share on other sites More sharing options...
CUBUSMC Posted April 17, 2015 Share #7 Posted April 17, 2015 For anyone who is interested, I found the answer to the WWI MKI grenade question I asked last week concerning the difference in plug thread size. I appears it was already addressed in a much earlier post. - Jeff Link to comment Share on other sites More sharing options...
jawasinger Posted April 17, 2015 Share #8 Posted April 17, 2015 Great info I have a number of MKI's and never new how to date them THANKS Link to comment Share on other sites More sharing options...
Dirt Detective Posted April 17, 2015 Share #9 Posted April 17, 2015 some good info..thanks Link to comment Share on other sites More sharing options...
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