Dover TWG LANTEC 200 - Recommended Capscrew Torque Values

LANTEC Product Support – Installation and Maintenance Manual
II
Recommended Capscrew Torque Values
Values are for dry assembly
Coarse Threads
Capscrew Size
Torque Value lb.ft.
Grade 5
Torque Value lb.ft.
Grade 8
1/4 - 20 8 12
5/16 – 18 17 25
3/8 – 16 30 45
7/16 – 12 50 70
1/2 - 13 75 110
9/16 – 12 110 150
5/8 – 11 150 220
3/4 - 10 260 380
7/8 – 9 430 600
1 – 8 640 900
1 1/8 – 7 800 1280
1 1/4 - 7 1120 1820
1 3/8 – 6 1460 2380
1 1/2 - 6 1940 3160
Fine Threads
Capscrew Size
Torque Value lb.ft.
Grade 5
Torque Value lb.ft.
Grade 8
1/4 - 28 10 14
5/16 – 24 19 25
3/8 – 24 35 50
7/16 – 20 55 80
1/2 - 20 90 120
9/16 – 18 120 170
5/8 – 18 180 240
3/4 - 16 300 420
7/8 – 14 470 660
1 – 14 730 1020
1 1/8 – 12 880 1440
1 1/4 - 12 1240 2000
1 3/8 – 12 1680 2720
1 1/2 - 12 2200 3560