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Shaft Nut Torque Settings

SAE Inch Shaft 1:16 Taper - J755
Shaft Diameter Thread Thread Diameter Thread Pitch Torque
mm inch mm inch/tpi Nm / ft-lb
3/4" 1/2" x 13 UNC 0.500 13 tpi 40 Nm / 30 ft-lb
7/8" 5/8" x 11 UNC 0.625 11 tpi 52 Nm / 38 ft-lb
7/8" 5/8" x 11 BSW 0.625 11 tpi 60 Nm / 45 ft-lb
7/8" 5/8" x 11 UNC 0.625 11 tpi 60 Nm / 45 ft-lb
1" 3/4" x 10 UNC 0.75 10 tpi 81 Nm / 60 ft-lb
1", 1 1/8" 3/4" x 10 BSW 0.75 10 tpi 125 Nm / 95 ft-lb
1" 3/4" x 10 UNC 0.75 10 tpi 125 Nm / 95 ft-lb
1 1/4" 7/8" x 9 UNC 0.875 9 tpi 118 Nm / 87 ft-lb
1 1/4" 7/8" x 9 UNC 0.875 9 tpi 160 Nm / 115 ft-lb
1 3/8" 1" x 8 UNC 1.0 8 tpi 151 Nm / 111 ft-lb
1 3/8" 1" x 8 BSW 1.0 8 tpi 210 Nm / 155 ft-lb
1 3/8" 1" x 8 UNC 1.0 8 tpi 210 Nm / 155 ft-lb
1 1/2" 1 1/8" x 7 BSW 1.125 7 tpi 350 Nm / 355 ft-lb
1 1/2" 1 1/8" x 7 UNC 1.125 7 tpi 350 Nm / 355 ft-lb
1 3/4" 1 1/4" x 7 BSW 1.25 7 tpi 350 Nm / 355 ft-lb
1 3/4" 1 1/4" x 7 UNC 1.25 7 tpi 350 Nm / 355 ft-lb
2" 1 1/2" x 6 UNC 1.5 6 tpi 390 Nm / 290 ft-lb
ISO Metric Shaft 1:10 Taper - 4566-1985
Shaft Diameter Thread Thread Diameter Thread Pitch Torque
mm inch mm inch/tpi Nm / ft-lb
20mm M14 x 1.5 14 1.5 40 Nm / 30 ft-lb
M14 x 2 14 2 40 Nm / 30 ft-lb
25mm M16 x 1.5 16 1.5 70 Nm / 50 ft-lb
M16 x 2 16 2 60 Nm / 45 ft-lb
30mm M20 x 1.5 20 1.5 135 Nm / 100 ft-lb
M20 x 2 20 2 100 Nm / 75 ft-lb
M20 x 2.5 20 2.5 125 Nm / 95 ft-lb
35mm, 40mm M24 x 2 24 2 225 Nm / 165 ft-lb
M24 x 3 24 3 210 Nm / 155 ft-lb
M27 x 2 26.7 2 198 Nm
M27 x 3 27 3 315 Nm / 230 ft-lb
45mm M30 x 2 30 2 430 Nm / 315 ft-lb
M30 x 3.5 30 3.5 350 Nm / 355 ft-lb
M33 x 2 32.7 2 305 Nm
50mm M36 x 3 36 3 490 Nm / 360 ft-lb
60mm, 65mm M42 x 3 42 3 530 Nm / 390 ft-lb
Saildrive Spline Shaft
Saildrive Thread Thread Diameter Thread Pitch Torque
mm inch mm inch/tpi Nm / ft-lb
Volvo, Nanni, Lombardini, ZF, Technodrive, Seaprop 60 SD M16 x 2 16 2 60 Nm / 45 ft-lb
Yanmar SD20, SD25 and SD31 M16 x 2 16 2 40 Nm / 30 ft-lb
Yanmar SD40, SD 50 and SD 60 M20 x 2 20 2 100 Nm / 75 ft-lb
Standard Imperial 1:12 Tapers
Shaft Diameter Thread Thread Diameter Thread Pitch Torque
mm inch mm inch/tpi Nm / ft-lb
1/2" x 16 BSF 0.500 16 tpi 40 Nm / 30 ft-lb
5/8" x 14 BSF 0.625 14 tpi 70 Nm / 50 ft-lb
5/8" x 18 UNC 0.625 18 tpi 70 Nm / 50 ft-lb
3/4" x 12 BSF 0.75 12 tpi 135 Nm / 100 ft-lb
3/4" x 16 UNC 0.75 16 tpi 135 Nm / 100 ft-lb
1" x 12 UNF 1.00 12 tpi 160 Nm / 118 ft-lb
1" x 10 BSF 1.00 10 tpi 225 Nm / 165 ft-lb
1" x 12 UNF 1.00 12 tpi 225 Nm / 165 ft-lb
Metric Fastener Thread ISO 724
Shaft Diameter Thread Thread Diameter Thread Pitch Torque
mm inch mm inch/tpi Nm / ft-lb
1/2" x 16 BSF 0.500 16 tpi 40 Nm / 30 ft-lb
5/8" x 14 BSF 0.625 14 tpi 70 Nm / 50 ft-lb
5/8" x 18 UNC 0.625 18 tpi 70 Nm / 50 ft-lb
3/4" x 12 BSF 0.75 12 tpi 135 Nm / 100 ft-lb
3/4" x 16 UNC 0.75 16 tpi 135 Nm / 100 ft-lb
1" x 12 UNF 1.00 12 tpi 160 Nm / 118 ft-lb
1" x 10 BSF 1.00 10 tpi 225 Nm / 165 ft-lb
1" x 12 UNF 1.00 12 tpi 225 Nm / 165 ft-lb