一、螺絲攻有幾種

螺(luo)絲(si)(si)攻(gong)(gong)因使用的目的不同(tong)而有(you)(you)種(zhong)(zhong)種(zhong)(zhong)形狀，JIS規格上就規定(ding)有(you)(you)手絞絲(si)(si)攻(gong)(gong)、螺(luo)帽絲(si)(si)攻(gong)(gong)、管用絲(si)(si)攻(gong)(gong)等等。主(zhu)要種(zhong)(zhong)類如下(xia)：

1、等徑手絞絲攻：一般用手絞絲攻（SKH.SKS）、鑄(zhu)鐵用(yong)(yong)手(shou)絞(jiao)絲(si)攻(gong)、壓鑄(zhu)件用(yong)(yong)手(shou)絞(jiao)絲(si)攻(gong)、塑(su)樹(shu)脂件用(yong)(yong)手(shou)絞(jiao)絲(si)攻(gong)、高硬(ying)鋼用(yong)(yong)手(shou)絞(jiao)絲(si)攻(gong)、螺絲(si)襯套用(yong)(yong)絲(si)攻(gong)、加(jia)大尺寸(cun)用(yong)(yong)手(shou)絞(jiao)絲(si)攻(gong)（SKH.SKS）、碳化(hua)鎢絲(si)攻(gong)。

2、螺帽絲攻：螺帽絲攻(gong)（SKH.SKS）。

3、管用絲攻：一(yi)般管(guan)(guan)用(yong)推(tui)拔(ba)(ba)絲(si)(si)攻(gong)(gong)（SKH.SHS)、短螺絲(si)(si)形推(tui)拔(ba)(ba)絲(si)(si)攻(gong)(gong)、鑄鐵用(yong)推(tui)拔(ba)(ba)絲(si)(si)攻(gong)(gong)、軟鐵用(yong)推(tui)拔(ba)(ba)絲(si)(si)攻(gong)(gong)、管(guan)(guan)用(yong)推(tui)拔(ba)(ba)互塔斷續絲(si)(si)攻(gong)(gong)、一(yi)般管(guan)(guan)用(yong)平行絲(si)(si)攻(gong)(gong)（SKH.SKS）。

4、先端絲攻：一般用先(xian)端絲攻(gong)、不銹鋼用先(xian)端絲攻(gong)、深孔用先(xian)端絲攻(gong)、槍膛絲攻(gong)（Gun Flute Tap）。

5、蝸旋絲攻：一般(ban)用蝸(gua)(gua)旋絲攻(gong)(gong)、不銹鋼用蝸(gua)(gua)旋絲攻(gong)(gong)、高(gao)碳鋼用蝸(gua)(gua)旋絲攻(gong)(gong)、深孔用蝸(gua)(gua)旋絲攻(gong)(gong)、左蝸(gua)(gua)旋絲攻(gong)(gong)。

6、無槽絲攻：鋼(gang)用(yong)(yong)High Roll Tap無(wu)槽(cao)絲攻、鋼(gang)用(yong)(yong)New Roll Tap非(fei)(fei)圓(yuan)絲攻、非(fei)(fei)鐵(tie)金(jin)(jin)屬(shu)(shu)用(yong)(yong)無(wu)槽(cao)絲攻、非(fei)(fei)鐵(tie)金(jin)(jin)屬(shu)(shu)用(yong)(yong)非(fei)(fei)圓(yuan)絲攻。

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

8、復合絲攻：有鉆(zhan)頭(tou)(tou)絲(si)攻(gong)(gong)(gong)[A型（鑄鐵用）鉆(zhan)頭(tou)(tou)絲(si)攻(gong)(gong)(gong)、B型（鋼用）鉆(zhan)頭(tou)(tou)絲(si)攻(gong)(gong)(gong)]、增(zeng)徑(jing)絲(si)攻(gong)(gong)(gong)、帶(dai)絞刀絲(si)攻(gong)(gong)(gong)、異徑(jing)絲(si)攻(gong)(gong)(gong)、帶(dai)道桿絲(si)攻(gong)(gong)(gong)。

9、刃部可換絲攻：殼型絲攻、鑲(xiang)刃絲攻。

10、其他：直徑增大絲(si)攻(gong)、種(zhong)絲(si)。

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(ru)下：

1、造型不同

頭攻前端多了一小段攻形的(de)不(bu)(bu)完(wan)全螺(luo)紋部(bu)分，在(zai)攻絲過程中(zhong)起導(dao)向和降(jiang)低切削力的(de)作用。二攻沒(mei)有(you)不(bu)(bu)完(wan)全螺(luo)紋部(bu)分。

2、攻絲對象不同

在攻通(tong)孔螺紋時，只需用頭攻就可以（攻到導向(xiang)部分完(wan)全露出為止(zhi)）。

對于(yu)盲孔螺紋，如果想(xiang)充(chong)分利用(yong)鉆孔深度(du)，以得到盡可(ke)能長(chang)的(de)完(wan)整螺紋，則需使用(yong)二攻(gong)，二攻(gong)特別適用(yong)于(yu)盲孔螺紋長(chang)度(du)與孔深尺寸相差較小的(de)場合。

3、前部錐體不同

頭攻前部攻體長，便(bian)于導向，容易攻入。

二攻前部(bu)攻體短(duan)，使(shi)螺(luo)紋更(geng)圓滑，螺(luo)絲能夠輕易的擰(ning)進去。

4、外觀上不同

頭攻(gong)的切削(xue)部分(fen)斜度較長，一(yi)般有(you)5-7個(ge)不完整牙形；二攻(gong)較短，只有(you)1-2個(ge)不完整牙形。頭攻(gong)前(qian)部攻(gong)體長，便于(yu)導向；二攻(gong)前(qian)部攻(gong)體短。

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(yong)于手工(gong)攻(gong)絲。按加工(gong)方式分類中的機用(yong)絲錐一(yi)般(ban)為一(yi)支，手用(yong)絲攻(gong)可(ke)分為三個一(yi)組或兩(liang)個一(yi)組，即頭(tou)攻(gong)、二(er)攻(gong)、三攻(gong)。

6、使用順序不同

頭(tou)攻(gong)先攻(gong)出螺(luo)紋的(de)輪廓，二(er)(er)攻(gong)在其基礎(chu)上把(ba)螺(luo)紋做的(de)更圓(yuan)滑，使(shi)(shi)螺(luo)絲能(neng)夠輕易的(de)擰進(jin)去！頭(tou)攻(gong)是用(yong)(yong)來攻(gong)第一次的(de)，二(er)(er)攻(gong)是用(yong)(yong)來攻(gong)第二(er)(er)次的(de)。使(shi)(shi)用(yong)(yong)的(de)時候一般(ban)通(tong)過專用(yong)(yong)扳手(shou)進(jin)行(xing)切削。