Strength
category
8.8
9.8
9T
Bolt head
shape
M18 - M24
Hex bolt
Flange bolt
Hex bolt
Flange bolt
M18 x 1.5
:
222.5 to 334.3 N
・
m
{ 22.7 to 34.1 kgf
・
m /
164 to 247 lb
・
ft }
―
:
229.5 to 345.2 N
・
m
{ 23.4 to 35.2 kgf
・
m /
169 to 255 lb
・
ft }
―
*M18 x 2.5
:
223.6 to 335.4 N
・
m
{ 22.8 to 34.2 kgf
・
m /
165 to 247 lb
・
ft }
―
:
230.5 to 346.2 N
・
m
{ 23.5 to 35.3 kgf
・
m /
170 to 255 lb
・
ft }
―
M20 x 1.5
:
307.4 to 461.7 N
・
m
{ 31.3 to 47.1 kgf
・
m /
227 to 341 lb
・
ft }
―
:
293.2 to 440.3 N
・
m
{ 29.9 to 44.9 kgf
・
m /
216 to 325 lb
・
ft }
―
*M20 x 2.5
:
284.0 to 472.1 N
・
m
{ 29.0 to 48.1 kgf
・
m /
209 to 348 lb
・
ft }
―
:
293.2 to 440.3 N
・
m
{ 29.9 to 44.9 kgf
・
m /
216 to 325 lb
・
ft }
―
M22 x 1.5
:
413.6 to 620.5 N
・
m
{ 42.2 to 63.3 kgf
・
m /
305 to 458 lb
・
ft }
―
:
424.6 to 636.5 N
・
m
{ 43.3 to 64.9 kgf
・
m /
313 to 469 lb
・
ft }
―
*M22 x 2.5
:
385.7 to 578.0 N
・
m
{ 39.3 to 58.9 kgf
・
m /
284 to 426 lb
・
ft }
―
:
394.2 to 592.3 N
・
m
{ 40.2 to 60.4 kgf
・
m /
291 to 437 lb
・
ft }
―
M24 x 2
:
490.8 to 810.5 N
・
m
{ 50.0 to 82.6 kgf
・
m /
362 to 598 lb
・
ft }
―
:
554.1 to 830.6 N
・
m
{ 56.5 to 84.7 kgf
・
m /
409 to 613 lb
・
ft }
―
*M24 x 3
:
462.8 to 693.1 N
・
m
{ 47.2 to 70.7 kgf
・
m /
341 to 511 lb
・
ft }
―
:
520.7 to 781.6 N
・
m
{ 53.1 to 79.7 kgf
・
m /
384 to 576 lb
・
ft }
―
Note
:
・
Refer to the following list for the indicators
used on standard bolt heads.
14A-16 Service Information Guide (All)