Metric Stainless Steel Bolt Torque Settings

Iso 724 metric threads dimensions of metric threads according iso 724.

Metric stainless steel bolt torque settings.

Recommended bolt torque values for stainless steel and nonferrous fasteners inch series. Metric bolt head and wrench size ansi so din and jis bolts. A1 50 a2 70 a4 80 a1 50 a2 70 a4 80 a1 50 a1 70. Torque values stainless steel bolt table chart stainless steel stud bolt alloy 20 stud bolt manufacturers india torque values stainless steel bolt table chart stud bolt torque chart stainless steel stud bolt torque chart torque values a2 or a4 metric stainless steel fasteners stud bolt torque chart metric b7 stud bolt torque chart b8 stud bolt torque chart stainless steel stud.

Thread coeff friction preload kn property class tightening torque nm property class min breaking torque. Below is a list of the recommended tightening torques for 12 9 10 9 8 8 zinc plated finish bolts. Improvised torque wrench improvised torque wrench with luggage scale. This applies to grades a1 a2 a3 a4 and a5.

There is a considerable difference in torque required for a bolt that has been lubricated with oil and one that has not. Bolt torque calculator calculate required bolt torque. By reza 2 feb 2018 leave a comment. The following torque values are suggested maximums based upon actual lab testing on clean and dry or near dry fasteners.

14 118 106 87 78 16 180 162 133 119 18 258 232 190 171 20 370 333 273 246 22 485 437 358 322 24. Fasteners bolts nuts and threaded rods torque tension and loads. Considerations for torque settings lubricated or non lubricated is the main issue. For other friction.

4 2 6 2 3 23 0 20 7 5 5 1 4 6 45 1 40 6 6 8 7 7 8 77 0 69 3 8 21 2 19 1 188 169 10 42 38 372 335 12 73 66 54 ft lbs. This shows torque values in nm for properties classes 50 70 and 80 as shown in the table below. Torque values for a2 or a4 metric stainless steel fasteners bolt dia mm dry lubricated 3 1 0 0 9 8 9 in lbs. Ansi hardware design guide design torque and force calculations.

Tightening torque values are not given in this standard. Torque values for a2 70 or a4 70 metric stainless steel fasteners n lbs lbs nm 3 0 5 3522 792 2264 509 1698 382 0 81 7 2 in lbs 0 95 8 4 in lbs 906 204 4 0 7 6145 1381 3950 888 2963 666 1 90 2 21 1580 355 5 0 8 9928 2232 6382 1435 4787 1076 3 83 4 47 2553 574 6 1 14086 3167 9056 2036 6792 1527 6 52 7 61 3622 814. Minimum breaking torque m b min for austenitic stainless steel bolts and screws between m 1 6 and m 16 course threads are shown in table 4 of en iso 3506 1 1997. Standard torque settings for stainless steel metric bolts.

Torque values stainless steel bolt table chart.