一、螺絲攻有幾種

螺(luo)絲攻(gong)(gong)因使用的(de)目(mu)的(de)不同而有(you)種種形狀，JIS規格上就規定有(you)手絞絲攻(gong)(gong)、螺(luo)帽絲攻(gong)(gong)、管用絲攻(gong)(gong)等等。主要種類(lei)如下：

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

2、螺帽絲攻：螺帽絲攻（SKH.SKS）。

3、管用絲攻：一般(ban)管用(yong)推(tui)拔(ba)(ba)(ba)絲(si)(si)攻(gong)（SKH.SHS)、短螺(luo)絲(si)(si)形(xing)推(tui)拔(ba)(ba)(ba)絲(si)(si)攻(gong)、鑄鐵用(yong)推(tui)拔(ba)(ba)(ba)絲(si)(si)攻(gong)、軟鐵用(yong)推(tui)拔(ba)(ba)(ba)絲(si)(si)攻(gong)、管用(yong)推(tui)拔(ba)(ba)(ba)互塔斷續絲(si)(si)攻(gong)、一般(ban)管用(yong)平(ping)行絲(si)(si)攻(gong)（SKH.SKS）。

4、先端絲攻：一般(ban)用(yong)先(xian)(xian)端(duan)絲(si)攻(gong)、不(bu)銹(xiu)鋼(gang)用(yong)先(xian)(xian)端(duan)絲(si)攻(gong)、深孔用(yong)先(xian)(xian)端(duan)絲(si)攻(gong)、槍膛絲(si)攻(gong)（Gun Flute Tap）。

5、蝸旋絲攻：一般(ban)用蝸(gua)(gua)旋絲(si)攻(gong)、不(bu)銹鋼(gang)用蝸(gua)(gua)旋絲(si)攻(gong)、高碳鋼(gang)用蝸(gua)(gua)旋絲(si)攻(gong)、深孔用蝸(gua)(gua)旋絲(si)攻(gong)、左(zuo)蝸(gua)(gua)旋絲(si)攻(gong)。

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

7、柄部特殊絲攻：莫氏推拔絲攻(gong)(gong)(gong)、彎柄(bing)絲攻(gong)(gong)(gong)、培安(an)絲攻(gong)(gong)(gong)、套柄(bing)絲攻(gong)(gong)(gong)、長(chang)柄(bing)絲攻(gong)(gong)(gong)、皮帶(dai)輪絲攻(gong)(gong)(gong)。

8、復合絲攻：有鉆(zhan)頭(tou)(tou)絲(si)攻[A型（鑄鐵用）鉆(zhan)頭(tou)(tou)絲(si)攻、B型（鋼(gang)用）鉆(zhan)頭(tou)(tou)絲(si)攻]、增徑(jing)絲(si)攻、帶(dai)絞刀絲(si)攻、異徑(jing)絲(si)攻、帶(dai)道桿絲(si)攻。

9、刃部可換絲攻：殼型絲(si)攻(gong)(gong)、鑲刃(ren)絲(si)攻(gong)(gong)。

10、其他：直徑增大絲攻、種(zhong)絲。

二、螺絲攻頭攻和二攻之間的區別

絲錐的(de)頭攻(gong)和二攻(gong)之間的(de)區別如下(xia)：

1、造型不同

頭攻(gong)(gong)前端多了一小段攻(gong)(gong)形的(de)不完全螺紋部分，在攻(gong)(gong)絲過程中起導向和降低(di)切削力的(de)作用(yong)。二攻(gong)(gong)沒有不完全螺紋部分。

2、攻絲對象不同

在攻通孔螺(luo)紋時(shi)，只需用頭攻就可(ke)以（攻到(dao)導向(xiang)部分完(wan)全露出(chu)為止）。

對于(yu)盲孔螺紋，如果(guo)想充分利用鉆孔深(shen)度(du)，以得(de)到盡可能長的完整螺紋，則需使用二(er)攻，二(er)攻特別適用于(yu)盲孔螺紋長度(du)與孔深(shen)尺寸相差較小的場合。

3、前部錐體不同

頭攻前部攻體長(chang)，便于導(dao)向，容易攻入。

二攻前(qian)部(bu)攻體短，使螺紋更圓滑，螺絲能(neng)夠輕易的擰進去。

4、外觀上不同

頭攻(gong)的切削部分斜度較長，一(yi)般有5-7個(ge)不(bu)完整(zheng)牙形；二(er)攻(gong)較短(duan)，只有1-2個(ge)不(bu)完整(zheng)牙形。頭攻(gong)前部攻(gong)體長，便于導向；二(er)攻(gong)前部攻(gong)體短(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(shi)用(yong)于(yu)手工攻(gong)(gong)絲。按(an)加工方式(shi)分類(lei)中的(de)機用(yong)絲錐一(yi)般為一(yi)支，手用(yong)絲攻(gong)(gong)可分為三個一(yi)組或兩(liang)個一(yi)組，即頭攻(gong)(gong)、二攻(gong)(gong)、三攻(gong)(gong)。

6、使用順序不同

頭攻(gong)(gong)(gong)先攻(gong)(gong)(gong)出螺紋(wen)的輪廓，二(er)(er)攻(gong)(gong)(gong)在其基礎上把螺紋(wen)做(zuo)的更圓滑，使螺絲能夠輕易的擰(ning)進去！頭攻(gong)(gong)(gong)是(shi)用(yong)來攻(gong)(gong)(gong)第一次的，二(er)(er)攻(gong)(gong)(gong)是(shi)用(yong)來攻(gong)(gong)(gong)第二(er)(er)次的。使用(yong)的時(shi)候一般(ban)通過專(zhuan)用(yong)扳手(shou)進行(xing)切削。