Bolt torque table

Torque values listed are for general use only. Check tightness of fasteners periodically. Coarse Fine Coarse Fine Coarse . Suggested Starting Values.

The below estimated torque calculations are only offered as a guide.

Use of its content by anyone is the sole responsibility of that . The torque tables are built on specific assumptions regarding bolt and nut factor. Before using a given torque table , these assumptions should be verified to . In preparing this guide to torque values , the following basic assumptions have been made: (a) bolts and nuts are new, standard finish, uncoated and not . The torque values can only be achieved if nut (or tapped hole) has a proof load greater than or . The following suggested tightening torques provide an excellent starting point for determining torque requirements. Remember, you may need to vary these .

Relative Strength Marking 4. IFI-1does not govern lock nuts above 1. The values shown in the chart are to be used as a mid- range guideline. Nominal Raised Face Raised Face. Bolt tightening sequence or torque sequence is key to achieve this. A complete torque tightening . Tap Size from - to from - to.

The published torque values do not include the rotational drag of the elastic stop nuts. When the bolt is rotated for final torque the chart values must be modified. When applying torque to a bolt be sure to have a washer under the . The tables below reflect the of many tests to determine the relation between torque and bolt stress.

Values are based on steel bolting well lubricated with . Tables in this Technical Standard. This assembly torque is designed to achieve a preloading in the . Flat Face Flanges with BBolts.

TIGHTENING TORQUES FOR IMPERIAL (U.S.) BOLTS of yield strength (Sy). Table 8-1) dn : Pitch diameter of bearing surface.