Water Heater User Manual
 30 
SECTION VI – MISCELLANEOUS CHARTS AND FORMULAS 
TORQUE VALUES
BOLT SIZE 
18-8 S/S 
IN.-LBS. 
BRASS 
IN.-LBS. 
SILICON
BRONZE 
IN.-LBS. 
ALUMINUM
2024-T4 
IN.-LBS. 
316 S/S 
IN.-LBS. 
MONEL 
IN.-LBS. 
4-40 
5.2  4.3  4.8  2.9  5.5  5.3 
4-48  6.6  5.4  6.1  3.6  6.9  6.7 
5-40  7.7  6.3  7.1  4.2  8.1  7.8 
5-44  9.4  7.7  8.7  5.1  9.8  9.6 
6-32  9.6  7.9  8.9  5.3  10.1  9.8 
6-40  12.1  9.9  11.2  6.6  12.7  12.3 
8-32  19.8  16.2  18.4  10.8  20.7  20.2 
8-36  22.0  18.0  20.4  12.0  23.0  22.4 
10-24  22.8  18.6  21.2  13.8  23.8  25.9 
10-32  31.7  25.9  29.3  19.2  33.1  34.9 
1/4-20  75.2  61.5  68.8  45.6  78.8  85.3 
1/4-28  94.0  77.0  87.0  57.0  99.0  106.0 
5/16-18  132  107  123  80  138  149 
5/16-24  142  116  131  86  147  160 
3/8-16  236  192  219  143  247  266 
3/8-24  259  212  240  157  271  294 
7/16-14  376  317  349  228  393  427 
7/16-20  400  327  371  242  418  451 
1/2-13  517  422  480  313  542  584 
1/2-20  541  443  502  328  565  613 
9/16-12  682  558  632  413  713  774 
9/16-18  752  615  697  456  787  855 
5/8-11  1110  907  1030  715  1160  1330 
5/8-18  1244  1016  1154  798  1301  1482 
3/4-10  1530  1249  1416  980  1582  1832 
3/4-16  1490  1220  1382  958  1558  1790 
7/8-9  2328  1905  2140  1495  2430  2775 
7/8-14  2318  1895  2130  1490  2420  2755 
1-8  3440  2815  3185  2205  3595  4130 
1-14  3110  2545  2885  1995  3250  3730 










