一、螺絲攻有幾種

螺絲(si)(si)攻因使用的目的不(bu)同而有種(zhong)種(zhong)形(xing)狀，JIS規格上(shang)就規定有手(shou)絞(jiao)絲(si)(si)攻、螺帽(mao)絲(si)(si)攻、管用絲(si)(si)攻等(deng)等(deng)。主要(yao)種(zhong)類如下：

1、等徑手絞絲攻：一般用手絞絲攻（SKH.SKS）、鑄鐵(tie)用(yong)(yong)手絞絲攻(gong)(gong)(gong)、壓鑄件用(yong)(yong)手絞絲攻(gong)(gong)(gong)、塑樹脂件用(yong)(yong)手絞絲攻(gong)(gong)(gong)、高硬(ying)鋼(gang)用(yong)(yong)手絞絲攻(gong)(gong)(gong)、螺(luo)絲襯套(tao)用(yong)(yong)絲攻(gong)(gong)(gong)、加(jia)大尺寸用(yong)(yong)手絞絲攻(gong)(gong)(gong)（SKH.SKS）、碳化鎢絲攻(gong)(gong)(gong)。

2、螺帽絲攻：螺(luo)帽絲(si)攻(gong)（SKH.SKS）。

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

4、先端絲攻：一般用先(xian)端絲(si)(si)攻(gong)、不(bu)銹(xiu)鋼用先(xian)端絲(si)(si)攻(gong)、深孔用先(xian)端絲(si)(si)攻(gong)、槍膛絲(si)(si)攻(gong)（Gun Flute Tap）。

5、蝸旋絲攻：一般用(yong)蝸(gua)旋(xuan)絲攻(gong)(gong)(gong)、不銹鋼用(yong)蝸(gua)旋(xuan)絲攻(gong)(gong)(gong)、高碳鋼用(yong)蝸(gua)旋(xuan)絲攻(gong)(gong)(gong)、深孔用(yong)蝸(gua)旋(xuan)絲攻(gong)(gong)(gong)、左(zuo)蝸(gua)旋(xuan)絲攻(gong)(gong)(gong)。

6、無槽絲攻：鋼用(yong)(yong)High Roll Tap無槽(cao)絲(si)攻(gong)、鋼用(yong)(yong)New Roll Tap非(fei)圓絲(si)攻(gong)、非(fei)鐵金屬(shu)用(yong)(yong)無槽(cao)絲(si)攻(gong)、非(fei)鐵金屬(shu)用(yong)(yong)非(fei)圓絲(si)攻(gong)。

7、柄部特殊絲攻：莫氏(shi)推拔絲(si)(si)攻(gong)(gong)、彎柄(bing)(bing)絲(si)(si)攻(gong)(gong)、培安(an)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(lun)絲(si)(si)攻(gong)(gong)。

8、復合絲攻：有鉆(zhan)頭(tou)絲(si)(si)攻(gong)(gong)[A型（鑄(zhu)鐵用）鉆(zhan)頭(tou)絲(si)(si)攻(gong)(gong)、B型（鋼用）鉆(zhan)頭(tou)絲(si)(si)攻(gong)(gong)]、增徑(jing)絲(si)(si)攻(gong)(gong)、帶(dai)絞刀絲(si)(si)攻(gong)(gong)、異徑(jing)絲(si)(si)攻(gong)(gong)、帶(dai)道桿絲(si)(si)攻(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(zeng)大絲攻(gong)、種(zhong)絲。

二、螺絲攻頭攻和二攻之間的區別

絲錐的頭攻和二攻之間的區別如下：

1、造型不同

頭攻前端多了一小段攻形的不(bu)完(wan)全螺紋部(bu)分(fen)，在攻絲過程中起導向和降低(di)切削力的作用(yong)。二攻沒有不(bu)完(wan)全螺紋部(bu)分(fen)。

2、攻絲對象不同

在攻(gong)(gong)通孔螺(luo)紋時，只需用頭攻(gong)(gong)就可(ke)以(yi)（攻(gong)(gong)到導向部分完全露(lu)出為止）。

對于(yu)盲孔(kong)螺紋(wen)，如果想充分利用(yong)鉆(zhan)孔(kong)深(shen)度(du)，以得(de)到盡可能長的完(wan)整螺紋(wen)，則(ze)需使用(yong)二(er)攻，二(er)攻特別適用(yong)于(yu)盲孔(kong)螺紋(wen)長度(du)與孔(kong)深(shen)尺寸相差較小的場合。

3、前部錐體不同

頭攻前部(bu)攻體長(chang)，便于導向，容易(yi)攻入。

二攻前部攻體短，使螺紋更圓滑，螺絲能(neng)夠輕易(yi)的擰進去。

4、外觀上不同

頭(tou)攻(gong)的切削(xue)部分斜度(du)較長(chang)，一般有(you)5-7個不完整(zheng)牙形(xing)；二攻(gong)較短(duan)，只有(you)1-2個不完整(zheng)牙形(xing)。頭(tou)攻(gong)前部攻(gong)體(ti)長(chang)，便于導(dao)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(shi)用于手工(gong)攻(gong)絲(si)。按加工(gong)方式分類(lei)中的機用絲(si)錐一(yi)般為一(yi)支，手用絲(si)攻(gong)可分為三個(ge)一(yi)組(zu)或兩個(ge)一(yi)組(zu)，即頭(tou)攻(gong)、二攻(gong)、三攻(gong)。

6、使用順序不同

頭攻(gong)先(xian)攻(gong)出螺(luo)紋的輪廓，二(er)攻(gong)在(zai)其基(ji)礎上把螺(luo)紋做(zuo)的更(geng)圓滑，使(shi)螺(luo)絲(si)能夠輕(qing)易的擰(ning)進去！頭攻(gong)是用來攻(gong)第(di)(di)一次(ci)的，二(er)攻(gong)是用來攻(gong)第(di)(di)二(er)次(ci)的。使(shi)用的時候一般通過專用扳手進行切削。