Typical Recommended Tightening Torques
Component Fastener Size Joint Size Torque (lb-ft)
Flange Yoke Bolts 5/16-24 UNF 1000,1100,1350,1410,1550 22-26
3/8-24 UNF 1280,1310,1610,1710 40-48
7/16-20 UNF 1350,1410,1760,1810 63-75
1/2-20 UNF 1480,1550,1650 97-116
5/8-18 UNF 1880,1910 194-232
11/16-18 NS   262-315
3/4-16 UNF 1950 341-409
7/8-14 UNF 2050 543-652
1-12 2150 810-976
End Yoke U-Bolts 5/16-24 NF 1280,1310,1330 14-17
3/8-24 NF 1350,1410 20-24
7/16-20 UNF 1480, 1550 32-37
Bearing Retainer Plate
Bolts or Cap Screws
5/16-24 UNF 1610 17-24
3/8-24 UNF 1710,1760,1810 32-42
7/16-20 UNF 1880 50-66
Bearing Cap and Straps
Bolts or Cap Screws
5/16-24 UNF   17-24
1/2-20 UNF 1650 77-103
9/16-18 UNF 1850,1910 10-147
3/4-16 UNF 1950 271-362
1-12 UNF 2150 744-844
Wing Bearing
Bolts or Cap Screws
5/16-24 UNF 2C, 3C, 4C 22-27
3/8-24 UNF 5C, 6C 37-49
7/16-20 UNF 7C, 8C 65-75
1/2-20 UNF 7C, 8C * 70-80
1/2-20 UNF 8.5C, 9C 110-120
1/2-20 UNF 9.5C 90-110
5/8-18 UNF 10C, 12C 230-240
3/4-16 UNF 11C, 15C 315-345
Stub Shaft Bolts 3/8-24 NF   21-32
7/16-20 NF   34-50
1/2-20 UNF   52-78
5/8-18 NF   104-156
3/4-16 NF   182-273
Shaft Support Bearing
(Center Bearing)
Stub Shafts Bolts
3/4-16 UNF   120-160
Stub Shaft End Nuts 7/8-16 NS   Contact Eng.
1-20 NS   Contact Eng.
1 1/4-18 NS   475-525
1 1/2-18 NEF   Contact Eng.
1 3/4-16 NS   Contact Eng.