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