13339| 12
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塑料攻絲 |
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點(diǎn)評(píng)
鑲嵌一個(gè)銅套 (帶M4內(nèi)螺紋) 在長管子里面, 有條件注塑成型的時(shí)候?qū)崿F(xiàn), 沒有條件可以鉚進(jìn)去;
自攻螺絲至少比機(jī)械螺絲好,數(shù)數(shù)牙間距就明白了.
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