Case 1650M - Page 42

INTRODUCTION
Torquevaluesforfour-boltangeconnections(InchScrews,Grade8)
Metricsize
mm
Imperialsize
in
Screwcode
61
Code61
N·m(lbft)
±10%
Screwcode
62
Code62
N·m(lbft)
±10%
13
1/25/16-1834(25.1)5/16-1834(25.1)
19
3/43/8-1663(46.5)3/8-1663(46.5)
251
3/8-1663(46.5)
7/16-14
97(71.5)
32
1-1/47/16-14
97(71.5)1/2-13158(116.5)
38
1-1/21/2-13158(116.5)5/8-11310(228.6)
512
1/2-13158(116.5)3/4-10473(348.9)
64
2-1/21/2-13158(116.5)
––
763
5/8-11310(228.6)
––
89
3-1/25/8-11310(228.6)
––
1024
5/8-11310(228.6)
––
127
5
5/8-11310(228.6)
––
Taperedthreadconnectiontightening
BritishStandardPipeTaper
(BSPT)threadsize(inch)
NationalPipeThreadFuel
(NPTF)threadsize(inch)
Turnsfromngertight
1/8-281/8-27
2-3
1/4-191/4-18
2-3
3/8-193/8-18
2-3
1/2-141/2-14
2-3
3/4-143/4-14
2-3
1-11
1-111/2
1.5-2.5
1-1/4-111-1/4-111/2
1.5-2.5
1-1/2-111-1/2-111/2
1.5-2.5
2-11
2-111/2
1.5-2.5
Torquevaluesforbanjoboltconnections(Copperwasherstyle)
Boltthread(metric)Hexsize(mm)TorqueN·m(lbft)±10%
M8x1.2513
13(9.6)
M10x1.2517
16(11.8)
M12x1.517
40(29.5)
M14x1.5
19
45(33.2)
M16x1.522
48(35.4)
M18x1.524
50(36.9)
M20x1.527
73(53.8)
M22x1.532
73(53.8)
M24x1.532
73(53.8)
4804856726/04/2017
35