INTRODUCTION
Torque values for four-bolt flange connections (Inch Screws, Grade 8)
Metric size
mm
Imperial size
in
Screw code
61
Code 61
N·m (lb ft)
± 10%
Screw code
62
Code 62
N·m (lb ft)
± 10%
13
1/2
5/16-18
34 (25.1)
5/16-18
34 (25.1)
19
3/4
3/8-16
63 (46.5)
3/8-16
63 (46.5)
25
1
3/8-16
63 (46.5)
7/16-14
97 (71.5)
32
1-1/4
7/16-14
97 (71.5)
1/2-13
158 (116.5)
38
1-1/2
1/2-13
158 (116.5)
5/8-11
310 (228.6)
51
2
1/2-13
158 (116.5)
3/4-10
473 (348.9)
64
2-1/2
1/2-13
158 (116.5)
–
–
76
3
5/8-11
310 (228.6)
–
–
89
3-1/2
5/8-11
310 (228.6)
–
–
102
4
5/8-11
310 (228.6)
–
–
127
5
5/8-11
310 (228.6)
–
–
Tapered thread connection tightening
British Standard Pipe Taper
(BSPT) thread size (inch)
National Pipe Thread Fuel
(NPTF) thread size (inch)
Turns from finger tight
1/8-28
1/8-27
2 - 3
1/4-19
1/4-18
2 - 3
3/8-19
3/8-18
2 - 3
1/2-14
1/2-14
2 - 3
3/4-14
3/4-14
2 - 3
1-11
1-11 1/2
1.5 - 2.5
1-1/4-11
1-1/4-11 1/2
1.5 - 2.5
1-1/2-11
1-1/2-11 1/2
1.5 - 2.5
2-11
2-11 1/2
1.5 - 2.5
Torque values for banjo bolt connections (Copper washer style)
Bolt thread (metric)
Hex size (mm)
Torque N·m (lb ft) ± 10%
M8 x 1.25
13
13 (9.6)
M10 x 1.25
17
16 (11.8)
M12 x 1.5
17
40 (29.5)
M14 x 1.5
19
45 (33.2)
M16 x 1.5
22
48 (35.4)
M18 x 1.5
24
50 (36.9)
M20 x 1.5
27
73 (53.8)
M22 x 1.5
32
73 (53.8)
M24 x 1.5
32
73 (53.8)
51430129 15/12/2017
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Summary of Contents for FARMALL 100N
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