The internal thread on this collar / nut was made using a hydraulic motor and gear mechanism. The spindles and rotating cores are produced from hardened H13 with a nitride coating to guarantee a long lasting service with minimal wear. The single impression fully automatic mould tool was fed by 3 sub gates on the internal face, this gives the lowered risk of distortion and join lines.
The polypropylene collar is used to produce parts on a dedicated shower unit. The thread was cut oversize at first sampling then adjusted to fit the UV chamber exactly.
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