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▣ DIMENSION : KS B 1010, JIS B 1186


(d) d1 H B C D D1 r K a-b E F h S
Basic Toleran
ce
Basic Toleran
ce
Basic Toleran
ce
App. App. min. App. Max. Max. Max. Basic Toleran
ce
M12 12 +0.7
-0.2
8 ±0.8 22 0
-0.8
25.4 20 20 0.8~1.6 2 0.7 1˚ 2˚ 0.4
~0.8
25 +5
0
M16 16 10 27 31.2 25 25 1.2~2.0 0.8 30
M20 20 +0.8
-0.4
13 ±0.9 32 0
-1
37 30 29 2.5 0.9 35 +6
0
M22 22 14 36 41.6 34 33 1.1 40
M24 24 15 41 47.3 39 38 1.6~2.4 3 1.2 45
M27 27 17 46 53.1 44 43 1.3 50
M30 30 19 ±1.0 50 57.7 48 47 2.0~2.8 3.5 1.5 55
   
▣ H/T NUTS Unit : mm
Normal
Size (d)
Bolt
Dia
H B C D D1 a-b E F H
Basic Tolerance Basic Tolerance App. App. min. Max. Max. Max.
M12 12 12 ±0.35 22 0
-0.8
25.4 20 20 0.5 1˚ 2˚ 0.4 ~ 0.8
M16 16 16 27 31.2 25 25 0.8
M20 20 20 ±0.4 32 0
-1
37 30 29 0.9
M22 22 22 36 41.6 34 33 1.1
M24 24 24 41 47.3 39 38 1.2
M27 27 27 46 53.1 44 43 1.3
M30 30 30 50 57.7 48 47 1.5