9/9

Allen Bolt Half Thread Length

08/11/2023
John Jonny

Allen Bolt Thread Length and  Dimensions

Metric
(d)		 Thread Length
(b) mm		 Head diameter Head high Socket width Socket Depth
(t min.)
(dk max.) (k max.) (s Nom.)
M 3 18 5.5 3 2.5 1.3
M 4 20 7 4 3 2.0
M 5 22 8.5 5 4 2.5
M 6 24 10 6 5 3
M 8 28 13 8 6 3.5
M 10 32 16 10 8 4
M 12 36 18 12 10 5
M 14 40 21 14 12 6
M 16 44 24 16 14 7
M 20 52 30 20 17 8
M 24 60 36 24 19 10
M 27 66 40 27 19 12
M 30 72 45 30 22 13.5

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