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SELF-LOCKING FASTENERS
A strong,knurled collar,which is completely embedded in the sheet,guarantees against rotation lf the fastener in the sheet fhe spin resistance lf the knurl greatly exceeds the torque that can be exerted by the self-locking feature.
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This article key words:
U，UL，F(xiàn)EOX，F(xiàn)EO，F(xiàn)EX， FE
