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Nitto Seiko Releases Cup Bolts with High Locking Effect

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2024-05-24

Nitto Seiko has released a type of Cup Bolt, which is a flange-type locking bolt that can replace bolts incorporating spring washers and flat washers. This new product is currently patent pending.

Conventional locking bolts generally use a combination of a spring washer and a plain washer. The new Cup Bolt has a flange integrally molded on the head with a tapered undercut section extending from the neck to the outer periphery, and a continuous undercut section located at the outermost periphery. It has a cup shape consisting of a flat part. When fastened, this part elastically deforms and acts like a spring washer, so you can get a strong locking effect without using a spring washer or flat washer. Additionally, by reducing the number of parts, the Cup Bolt achieves a weight reduction of approximately 18% compared to conventional models.

日東精工

杯形螺栓

緊固

扣件

彈簧墊圈

平墊圈

輕量化

Nitto Seiko

Cup Bolt

fastening

fastener

spring washer