網友提問(wen)：自(zi)鉆(zhan)自(zi)攻螺(luo)釘和普通的自(zi)攻螺(luo)釘有什么區別嗎?

　　萬千答復：您好。自(zi)(zi)鉆(zhan)(zhan)自(zi)(zi)攻(gong)(gong)螺(luo)(luo)釘(ding)是自(zi)(zi)攻(gong)(gong)螺(luo)(luo)釘(ding)的(de)(de)一(yi)種，它在連接(jie)的(de)(de)時候，就將鉆(zhan)(zhan)孔(kong)和攻(gong)(gong)絲兩道步(bu)驟合并為一(yi)次完成(cheng)了，先用(yong)螺(luo)(luo)釘(ding)前面的(de)(de)鉆(zhan)(zhan)頭進行(xing)(xing)鉆(zhan)(zhan)孔(kong)，接(jie)著(zhu)就用(yong)螺(luo)(luo)釘(ding)進行(xing)(xing)攻(gong)(gong)絲，在裝(zhuang)配時螺(luo)(luo)釘(ding)能自(zi)(zi)行(xing)(xing)鉆(zhan)(zhan)出中心(xin)孔(kong)子,然后借助于臨近的(de)(de)螺(luo)(luo)紋(wen)部分(fen)在載體上孔(kong)內自(zi)(zi)攻(gong)(gong)擠削出與(yu)之(zhi)配合的(de)(de)螺(luo)(luo)紋(wen)。這點和普通(tong)螺(luo)(luo)釘(ding)的(de)(de)分(fen)開進行(xing)(xing)不一(yi)樣(yang)，從而節約(yue)了施(shi)工(gong)時間，提(ti)高了施(shi)工(gong)效率。