Thread Data
303, 304SS SAE
F593 Group 1
316SS SAE F593
Group 2
A193 B8 A193 B8M
Cl 1 A276 Tp 304
A582 Tp 303
A193 Class 2,
B8M
A193 Class 2B
B8M2
Nominal Dia.
mm | In.
Threads
per 25
mm/1in.
Recommended Torque Nm | lb*ft
38 | 1-1/2
6
1125 | 830
750 | 553
1626 | 1199
1875 | 1383
38 | 1-1/2
8
1195 | 881
796 | 587
1726 | 1273
1992 | 1469
38 | 1-1/2
12
1267 | 934
845 | 623
1829 | 1349
2110 | 1556
41 | 1-5/8
8
1540 | 1136
1026 | 757
Not available
2570 | 1895
44 | 1-3/4
5
1775 | 1309
1182 | 872
2957 | 2181
44 | 1-3/4
8
1946 | 1435
1296 | 956
3242 | 2391
48 | 1-7/8
8
2416 | 1782
1611 | 1188
4027 | 2970
51 | 2
4.5
2667 | 1967
1778 | 1311
4446 | 3279
51 | 2
8
2959 | 2182
1973 | 1455
4932 | 3637
54 | 2-1/8
8
3576 | 2637
2384 | 1758
5174 | 3816
57 | 2-1/4
4.5
3903 | 2878
2601 | 1918
5636 | 4156
57 | 2-1/4
8
4273 | 3151
2849 | 2101
6173 | 4552
60 | 2-3/8
8
5055 | 3728
3371 | 2486
7303 | 5386
64 | 2-1/2
4
5339 | 3937
3558 | 2624
7710 | 5856
64 | 2-1/2
8
5930 | 4373
3953 | 2915
8564 | 6316
67 | 2-5/8
8
6897 | 5086
4598 | 3391
9963 | 7347
70 | 2-3/4
4
7245 | 5343
4830 | 3562
8855 | 6530
95 | 3-3/4
8
7965 | 5874
5310 | 3916
9736 | 7180
73 | 2-7/8
8
9138 | 6739
6093 | 4493
11169 | 8237
76 | 3
4
9558 | 7049
6372 | 4699
Not available
11682 | 8615
76 | 3
8
10421 | 7685
6947 | 5123
12737 | 9393
*1
Torque values provided assume fastener lubricant applied, k-factor = 0.15
Thread Data
A479 Grade XM19
SAE Gr. 5 A193 Gr.
B7
A276 S31803
A276 Type
S32760
A479/479M Al-
loy 2507
Nominal Dia.
mm | In.
Threads
per 25
mm/1in.
Recommended Torque Nm | lb*ft
6 | 1/4
20
9 | 7
7 | 5
8 | 6
8 | 6
8 | 5/16
18
20 | 15
12 | 9
15 | 11
15 | 11
10 | 3/8
16
37 | 27
23 | 17
27 | 20
27 | 20
11 | 7/16
14
58 | 43
35 | 26
45 | 33
45 | 33
13 | 1/2
13
88 | 65
54 | 40
68 | 50
68 | 50
14 | 9/16
12
127 | 94
79 | 58
98 | 72
98 | 72
16 | 5/8
11
176 | 130
108 | 80
134 | 99
134 | 99
19 | 3/4
10
312 | 230
194 | 143
239 | 176
239 | 176
22 | 7/8
9
490 | 361
302 | 223
373 | 275
373 | 275
25 | 1
8
755 | 557
468 | 345
575 | 424
575 | 424
29 | 1-1/8
7
1070 | 789
662 |488
815 | 601
815 | 601
29 | 1-1/8
8
1108 | 817
686 | 506
843 | 622
843 | 622
9.2 Tightening torque tables for studs, capscrews and nuts
Model VICR Installation, Operation, and Maintenance Manual
67