尼龙锁紧母、金属锁紧母、K帽、六角螺母、盖帽形、蝶形帽及各式垫圈、挡圈、销类等。

The mother of nylon lock, metal lock master, K cap, hex nut, cap-shaped, butterfly hats and all kinds of washers, retaining rings, pins and so on.

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六角锁紧螺母是一种有非金属物质(通常为尼龙)的颈圈嵌入的螺母。

They are the nuts with nonmetallic elements (normally Nylon insert) full collars or rings at the top.

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