NS EN ISO 16047 : 2005 AMD 1 2012

Foreword
1 Scope
2 Normative references
3 Terms and definitions
4 Symbols and their designations
5 Principle of test
   5.1 General
   5.2 Determination of coefficients of friction
   5.3 Determination of torque coefficient K (K-factor)
   5.4 Determination of ratio T/F
6 Apparatus
   6.1 Testing machine
   6.2 Test fixture
7 Test parts
   7.1 General
   7.2 Test-bearing plates or test washers
   7.3 Test nuts for testing bolts, screws and studs
   7.4 Test bolts or test screws for testing nuts
8 Testing under standard conditions
9 Testing under specific conditions
10 Evaluation of results
   10.1 Determination of torque coefficient K
   10.2 Determination of coefficient of total friction micro[tot]
   10.3 Determination of coefficient of friction between threads
        micro[th]
   10.4 Determination of coefficient of friction between bearing
        surfaces micro[b]
   10.5 Determination of yield clamp force F[y]
   10.6 Determination of yield tightening torque T[y]
   10.7 Determination of ultimate clamp force F[u]
   10.8 Determination of ultimate tightening torque T[u]
11 Test report
   11.1 General
   11.2 Description of fasteners to be tested
   11.3 Description of test parts
   11.4 Testing machine
   11.5 Test fixture
   11.6 Environmental conditions
   11.7 Specific conditions
   11.8 Test results
Bibliography

Provides the conditions for carrying out torque/clamp force tests on threaded fasteners and related parts.