Bolt Dia. (D) (in.–
threads/inch)
Tensile Stress Area
(Ab), (sq.-in.)
2238, 2239 (A 193 B7) ¼-2 ½ dia: Sult = 125
ksi, Sy=105 ksi over 2 ½ – 4: Sult = 115 ksi,
Sy=95 ksi over 4 – 7: Sult = 100 ksi, Sy=75 ksi
2299 (A 320 L7) ¼-2 ½
dia: Sult = 125 ksi,
Sy=105 ksi
Max. Preload (lbs)
Torque N-m | ft-lb
Nickel or Moly An-
ti-seize K=0.15
Torque N-m | ft-lb
Nickel or Moly Anti-
seize K=0.15
2.25–4.5
3.248
238728
8371 | 6714
8371 | 6714
2.25-8
3.557
261440
9969 | 7353
9969 | 7353
2.375-8
3.987
293045
11796 | 8700
11796 | 8700
2.5-4
3.999
293927
12453 | 9185
12453 | 9185
2.5-8
4.442
326487
13833 | 10203
13833 | 10203
2.625-8
4.921
327427
14559 | 10738
Not Applicable due to
size restrictions in the
material specification
2.75-4
4.934
328111
15292 | 11279
2.75-8
5.425
360763
16814 | 12401
2.875-8
5.953
395875
19289 | 14227
3-4
5.967
396806
20175 | 14880
3-8
6.506
432649
21997 | 16224
6.6.14.2 Maximum torque values for fasteners
About this table
The torque values specified in this table are for lubricated threads. These values should be increased for
dry threads only. Materials listed in this table are equal to the respective API 610, 10th Edition material
classes. In some cases, superior materials are substituted.
Goulds 2226, 2228, 2229, ASTM A193 B8 and B8M, ASTM A276 Tp 304, ASTM A582 Tp 303, SAE F593
Table 12: 300 Series Stainless Steel Fasteners
Bolt Dia. (D)
(in.– threads/
inch)
Tensile Stress
Area (Ab), (sq.–
in.)
2226, 2228: 303, 304SS, SAE F593
Group 1 2229: 316SS, SAE F593
Group 2 Yield strength:
65000 psi for 0.25 <=dia<=0.625
45000 psi for 0.75<=dia<=1.5
A193 B8, B8M Cl 1, A276 Tp 304,
A582 Tp 303
Yield strength=30000 psi
Ultimate tensile=75000 psi
Max. preload (lbs)
Torque N-m | ft-lb
Nickel or Moly Anti-
seize K=0.15
Max. preload
(lbs)
Torque N-m | ft-lb
Nickel or Moly An-
ti-seize K=0.15
1/4-20
0.0318
1447
7 | 5
668
3 | 2
5/16-18
0.0524
2384
12 | 9
1100
5 | 4
3/8–16
0.0775
3526
23 | 17
1628
11 | 8
7/16–14
0.1063
4837
35 | 26
2232
16 | 12
1/2–13
0.1419
6456
54 | 40
2980
26 | 19
9/16–12
0.1819
8276
79 | 58
3820
37 | 27
5/8–11
0.226
10283
108 | 80
4746
50 | 37
3/4–10
0.3345
10537
134 | 99
7025
89 | 66
7/8–9
0.4617
14544
210 | 155
9696
140 | 103
1–8
0.6058
19083
324 | 239
12722
216 | 159
1.125-7
0.7633
24044
458 | 338
16029
305 | 225
1.125-8
0.7904
24898
475 | 350
16598
316 | 233
1.25-7
0.9691
30527
647 | 477
20351
431 | 318
6.6 Reassembly
114 Model 3700, 3703, 3710, 3700LF, 3700LFI API Type OH2 / ISO 13709 1st and 2nd Ed. / API 610 8/9/10/11th Ed. Instal-
lation, Operation, and Maintenance Manual
Summary of Contents for Goulds Pumps 3700
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