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Article: 00091475

Test system for bolt

The precise laboratory system

for determination of assembly characteristics of bolts, testing of prevailing torque-type locknuts and practice-oriented checksThe quality of the screws and nuts used in assembly has an enormous effect on the quality of screwed joints.

Performance tests are the most important type of analysis for use in assembly processes. They determine the mechanical properties and tolerances of the fastener components, in order to ensure that they fulfill their performance requirements.

SCHATZ®-ANALYSE enables you to make tests in accordance with international standards or under realistic conditions corresponding to actual assembly processes.
Determining torque versus preload force characteristics in accordance with ISO 16047

The most important type of analysis for proper performance of threaded fasteners in assembly processes is determining the relationship between torque and preload force. The ISO 16047 international standard describes a method for determining the assembly characteristics of screws and nuts. This analysis can be used to determine the tightening characteristics of mechanical fastener components. The objective of the analysis is to determine the values of the following tightening parameters in the course of the test:

Total friction coefficient
Thread friction coefficient
Friction coefficient of the head or nut bearing surface
Preload force at the yield limit
Breaking force

Specifications

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