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:astening nut
Page 93
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sseph Billingham is marketing one-piece self-locking steel nut hich is known as the Serpress id incorporates an inner embrane that is distorted Ider load. This effectively lows a degree of both axial and dial elasticity in the joint while .epirig an assembly under .rmanent tension at the quired torque. The natural silience of the steel allows the It to be re-used any number of -nes without losing its If-locking properties.
It is claimed that the use of Hpress nuts reduces assembly lets in terms of materials and bour. The nut costs less than a )nventional type and washer
saves in handling by moving the necessity of having ■ progress two separate )mponents both before and iring assembly. Two versions the Serpress nut are available the most popular sizes. Type A an internal locking device hich does not block the thread xi the nut can he used on Jeemblies where a measure of ijustment and movement is quired. Type 8 has a standard thread and can be turned by hand; it is suitable for assemblies where a tight joint is required which will withstand constant vibration.
Marketed by: Joseph BiHingham Ltd, Providence Street, Cardley Heath, VVarley, Worcs.