一、螺絲攻有幾種

螺(luo)(luo)絲攻(gong)(gong)(gong)因使(shi)用的目(mu)的不同而有種(zhong)種(zhong)形狀(zhuang)，JIS規(gui)格上就規(gui)定(ding)有手絞絲攻(gong)(gong)(gong)、螺(luo)(luo)帽絲攻(gong)(gong)(gong)、管用絲攻(gong)(gong)(gong)等等。主要種(zhong)類如下(xia)：

1、等徑手絞絲攻：一般用手絞絲攻（SKH.SKS）、鑄鐵用(yong)(yong)手(shou)(shou)(shou)絞絲(si)攻(gong)、壓鑄件(jian)用(yong)(yong)手(shou)(shou)(shou)絞絲(si)攻(gong)、塑樹(shu)脂件(jian)用(yong)(yong)手(shou)(shou)(shou)絞絲(si)攻(gong)、高硬(ying)鋼用(yong)(yong)手(shou)(shou)(shou)絞絲(si)攻(gong)、螺絲(si)襯套用(yong)(yong)絲(si)攻(gong)、加大尺寸用(yong)(yong)手(shou)(shou)(shou)絞絲(si)攻(gong)（SKH.SKS）、碳化鎢絲(si)攻(gong)。

2、螺帽絲攻：螺帽絲(si)攻（SKH.SKS）。

3、管用絲攻：一般管(guan)用(yong)推拔絲(si)(si)攻(gong)(gong)(gong)（SKH.SHS)、短螺絲(si)(si)形推拔絲(si)(si)攻(gong)(gong)(gong)、鑄鐵用(yong)推拔絲(si)(si)攻(gong)(gong)(gong)、軟鐵用(yong)推拔絲(si)(si)攻(gong)(gong)(gong)、管(guan)用(yong)推拔互塔斷續絲(si)(si)攻(gong)(gong)(gong)、一般管(guan)用(yong)平行絲(si)(si)攻(gong)(gong)(gong)（SKH.SKS）。

4、先端絲攻：一(yi)般(ban)用先端絲(si)(si)攻(gong)(gong)、不銹鋼(gang)用先端絲(si)(si)攻(gong)(gong)、深孔用先端絲(si)(si)攻(gong)(gong)、槍膛絲(si)(si)攻(gong)(gong)（Gun Flute Tap）。

5、蝸旋絲攻：一般用蝸旋(xuan)絲(si)(si)攻(gong)、不銹鋼(gang)用蝸旋(xuan)絲(si)(si)攻(gong)、高(gao)碳鋼(gang)用蝸旋(xuan)絲(si)(si)攻(gong)、深孔用蝸旋(xuan)絲(si)(si)攻(gong)、左蝸旋(xuan)絲(si)(si)攻(gong)。

6、無槽絲攻：鋼用(yong)(yong)High Roll Tap無(wu)槽(cao)絲(si)攻(gong)(gong)(gong)、鋼用(yong)(yong)New Roll Tap非圓絲(si)攻(gong)(gong)(gong)、非鐵金(jin)屬用(yong)(yong)無(wu)槽(cao)絲(si)攻(gong)(gong)(gong)、非鐵金(jin)屬用(yong)(yong)非圓絲(si)攻(gong)(gong)(gong)。

7、柄部特殊絲攻：莫氏推(tui)拔絲(si)(si)攻(gong)(gong)、彎(wan)柄(bing)(bing)絲(si)(si)攻(gong)(gong)、培安絲(si)(si)攻(gong)(gong)、套柄(bing)(bing)絲(si)(si)攻(gong)(gong)、長柄(bing)(bing)絲(si)(si)攻(gong)(gong)、皮帶輪絲(si)(si)攻(gong)(gong)。

8、復合絲攻：有鉆(zhan)頭(tou)(tou)絲攻(gong)(gong)(gong)(gong)[A型（鑄鐵用）鉆(zhan)頭(tou)(tou)絲攻(gong)(gong)(gong)(gong)、B型（鋼用）鉆(zhan)頭(tou)(tou)絲攻(gong)(gong)(gong)(gong)]、增(zeng)徑絲攻(gong)(gong)(gong)(gong)、帶絞刀絲攻(gong)(gong)(gong)(gong)、異徑絲攻(gong)(gong)(gong)(gong)、帶道桿絲攻(gong)(gong)(gong)(gong)。

9、刃部可換絲攻：殼(ke)型絲(si)攻、鑲刃絲(si)攻。

10、其他：直徑增大絲攻、種絲。

二、螺絲攻頭攻和二攻之間的區別

絲錐的頭攻(gong)和二攻(gong)之間的區別如下：

1、造型不同

頭攻前端(duan)多了(le)一小(xiao)段攻形的不完(wan)全螺(luo)紋部(bu)分，在攻絲過程(cheng)中起導向和降低切削力的作用。二攻沒有(you)不完(wan)全螺(luo)紋部(bu)分。

2、攻絲對象不同

在攻通孔螺紋時，只需用頭攻就可(ke)以（攻到導(dao)向(xiang)部分完全露出為止）。

對于(yu)盲(mang)孔(kong)螺(luo)(luo)(luo)紋，如果想充分利用鉆孔(kong)深度，以(yi)得到盡(jin)可能長(chang)的(de)完整螺(luo)(luo)(luo)紋，則需使用二攻，二攻特別(bie)適用于(yu)盲(mang)孔(kong)螺(luo)(luo)(luo)紋長(chang)度與孔(kong)深尺寸相差較(jiao)小的(de)場合。

3、前部錐體不同

頭攻(gong)前(qian)部攻(gong)體長，便(bian)于(yu)導向(xiang)，容易(yi)攻(gong)入。

二(er)攻前(qian)部攻體短，使螺(luo)(luo)紋更圓滑，螺(luo)(luo)絲能夠輕易的擰進(jin)去(qu)。

4、外觀上不同

頭(tou)(tou)攻(gong)的切削部分斜度較長，一(yi)般有5-7個(ge)(ge)不完(wan)整牙形；二攻(gong)較短(duan)，只(zhi)有1-2個(ge)(ge)不完(wan)整牙形。頭(tou)(tou)攻(gong)前部攻(gong)體(ti)長，便于導向；二攻(gong)前部攻(gong)體(ti)短(duan)。

5、分類方式上不同

絲錐是用來加工內螺紋的刀具，是指碳素工具鋼或合金工具鋼滾牙（或切牙）絲錐，適用于手(shou)工攻絲。按加工方式(shi)分(fen)類中的機用絲錐一般(ban)為一支，手(shou)用絲攻可(ke)分(fen)為三個一組或兩(liang)個一組，即頭(tou)攻、二攻、三攻。

6、使用順序不同

頭(tou)(tou)攻(gong)(gong)先攻(gong)(gong)出螺紋的(de)輪廓，二攻(gong)(gong)在(zai)其基(ji)礎上把(ba)螺紋做(zuo)的(de)更圓滑(hua)，使螺絲能夠輕(qing)易的(de)擰進去！頭(tou)(tou)攻(gong)(gong)是用(yong)來攻(gong)(gong)第一(yi)次的(de)，二攻(gong)(gong)是用(yong)來攻(gong)(gong)第二次的(de)。使用(yong)的(de)時(shi)候一(yi)般通過專用(yong)扳手進行切削。