SAE AIR1551B PDF

SAE AIR1551B – Torque Tightening Metric Screw Threaded Fasteners (Stabilized: Jul 2014)

The purpose of this Aerospace Information Report (AIR) is to provide the aerospace propulsion industry with recommended assembly torque limits for threaded fasteners when a common torque value per fastener size is the objective. (The fasteners are based on the dimensional data in MA1518). It also provides a series of curves that show the effect of the coefficient of friction on the axial load produced in a fastener, when the recommended torques are applied.