Tecnam P2002 JF - Torque Values; AN Threads; ISO Metric Threads

Page 202 2
nd
Edition – Rev 0
20-10
TORQUE DATA – MAINTENANCE PRACTICES
Torque Values
Bolts used in aircraft structures are compliant with AN and ISO metric specifications.
Standard torque values for nut and bolt combination are given in following table, if not
otherwise specified in the Maintenance Manual procedures.
Torque values are expressed in Nm: conversion factors and tables are reported on Chapter 02.
AN Threads
Thread
Torque Value
10-32 (AN3 series)
3 Nm
1/4-28 (AN4 series)
10 Nm
5/16-24 (AN5 series)
16 Nm
3/8-24 (AN6 series)
22 Nm
7/16-20 (AN7 series)
57 Nm
1/2-20 (AN8 series)
78 Nm
9/16-18 (AN9 series)
113 Nm
5/8-18 (AN10 series)
147 Nm
ISO Metric Threads
Thread
Torque Value
M4 Series
3.1 Nm
M5 Series
6 Nm
M6 Series
10.4 Nm
M8 Series
24.6 Nm
M10 Series
50.1 Nm