Table of Contents

Foreword<br>1 Scope<br>2 Normative references<br>3 Terms and definitions<br>4 Symbols<br>5 Thread<br>6 Lubrication<br>7 Mechanical properties of prevailing torque nuts<br>8 Functional requirements for prevailing torque properties<br>9 Test method<br>Annex A (normative) - Temperature influence on prevailing<br>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;torques of nuts with nonmetallic insert<br>Annex B (informative) - Principles for the evaluation of the<br>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;total coefficient of friction, [mu]tot<br>Annex C (informative) - Test clamp force and prevailing<br>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;torques for prevailing torque nuts M3 and M4 in<br>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;property classes 8 and 10<br>Bibliography

Abstract

Describes the functional properties for prevailing torque steel nuts when tested at an ambient temperature range of +10 degrees C to +35 degrees C.

General Product Information

Published
Document Type	Standard
Status	Current
Publisher	British Standards Institution
Pages
ISBN
Committee	FME/9
Supersedes	14/30298880 DC : 0 BS 4929-1(1973) : 1973