Mitsubishi diesel engines - Standard Union Nuts; Taper Bolts

SERVICE STANDARDS
1 - 18
2.4 Standard Union Nuts
Nominal
diameter
Cap nut size
N･m kgf･m lbf･ft
63
M14×1.5
39 4 28.8
80
M16×1.5
49 5 36.1
100
M20×1.5
78 8 57.5
120
M22×1.5
98 10 72.3
150
M27×1.5
157 16 115.8
180
M30×1.5
196 20 144.6
200
M30×1.5
196 20 144.6
220
M33×1.5
245 25 180.7
254
M36×1.5
294 30 216.8
(Dry conditions)
2.5 Taper Bolts
Tightening into aluminum Tightening into iron
Size
N･m kgf･m lbf･ft N･m kgf･m lbf･ft
NPTF1/16 4.90 to 7.85 0.5 to 0.8 3.6 to 5.8 7.85 to 11.8 0.8 to 1.2 5.8 to 8.7
PT1/8 7.85 to 11.8 0.8 to 1.2 5.8 to 8.7 14.7 to 21.6 1.5 to 2.2 10.8 to 15.9
PT1/4, NPTF1/4 19.6 to 29.4 2.0 to 3.0 14.5 to 21.7 34.3 to 44.1 3.5 to 4.5 25.3 to 32.5
PT3/8 ― ― ― 53.9 to 73.5 5.5 to 7.5 39.8 to 54.2