螺絲釘是(shi)由頭部(bu)和螺桿兩部(bu)分(fen)構成的一類(lei)常用緊固(gu)件，主(zhu)要用來連接固(gu)定零件，大多是(shi)起到緊固(gu)和便于安裝(zhuang)拆卸的作用。隨著螺釘在我們日常生活中使用越來越廣泛，除了對其優點的認(ren)同外(wai)，人們開始關(guan)注(zhu)其分(fen)類(lei)及規格型號。

螺絲釘種類：

1、開槽普通(tong)螺(luo)(luo)(luo)釘(ding) 多(duo)用(yong)(yong)于較小(xiao)零(ling)件的(de)連接。它有盤頭(tou)螺(luo)(luo)(luo)釘(ding)、圓(yuan)柱(zhu)頭(tou)螺(luo)(luo)(luo)釘(ding)、半(ban)沉(chen)頭(tou)螺(luo)(luo)(luo)釘(ding)和沉(chen)頭(tou)螺(luo)(luo)(luo)釘(ding)。盤頭(tou)螺(luo)(luo)(luo)釘(ding)和圓(yuan)柱(zhu)頭(tou)螺(luo)(luo)(luo)釘(ding)的(de)釘(ding)頭(tou)強度(du)較高，瑁在普通(tong)的(de)部(bu)件連接上(shang);半(ban)沉(chen)頭(tou)螺(luo)(luo)(luo)釘(ding)的(de)頭(tou)部(bu)呈弧形，安(an)裝后它的(de)頂(ding)端略外(wai)露(lu)，且美觀光滑，一般(ban)用(yong)(yong)于儀(yi)器或(huo)精密(mi)機械(xie)上(shang);沉(chen)頭(tou)螺(luo)(luo)(luo)釘(ding)則用(yong)(yong)于不允許(xu)釘(ding)頭(tou)露(lu)出的(de)地方。

2、內六角及(ji)內六角花形螺釘(ding) 這類(lei)螺釘(ding)的頭部能埋(mai)入構件中，可(ke)施(shi)加(jia)較(jiao)大的扭矩，連接強度較(jiao)高，可(ke)代替六角螺栓。常用于結構要求緊湊，外觀(guan)平滑的聯接處(chu)。

3、十(shi)(shi)字(zi)(zi)槽普通螺釘(ding) 它與(yu)開槽普通螺釘(ding)的使(shi)用(yong)功能相似(si)，可互相代(dai)換(huan)，但(dan)十(shi)(shi)字(zi)(zi)槽普通螺釘(ding)的槽形(xing)強度(du)較(jiao)高(gao)，不易擰禿(tu)，外(wai)形(xing)較(jiao)為(wei)美觀。使(shi)用(yong)時須用(yong)與(yu)之配(pei)套的十(shi)(shi)字(zi)(zi)形(xing)旋(xuan)具進行裝卸。

4、吊環螺(luo)(luo)釘 吊環螺(luo)(luo)釘是供(gong)安裝和運輸時承(cheng)(cheng)重(zhong)的(de)(de)一種五金配件。使(shi)用(yong)時螺(luo)(luo)釘須旋進至使(shi)支(zhi)承(cheng)(cheng)面緊(jin)密貼合(he)的(de)(de)位(wei)置，不準使(shi)用(yong)工具扳緊(jin)，也(ye)不允許(xu)有垂(chui)直于吊環平面的(de)(de)荷載作用(yong)在上面。

5、緊(jin)(jin)(jin)(jin)(jin)定(ding)(ding)(ding)螺(luo)釘(ding)(ding) 緊(jin)(jin)(jin)(jin)(jin)定(ding)(ding)(ding)螺(luo)釘(ding)(ding)用(yong)(yong)(yong)于(yu)固定(ding)(ding)(ding)機件(jian)(jian)的(de)(de)(de)(de)相對位置(zhi)。把緊(jin)(jin)(jin)(jin)(jin)定(ding)(ding)(ding)螺(luo)釘(ding)(ding)旋入待緊(jin)(jin)(jin)(jin)(jin)定(ding)(ding)(ding)的(de)(de)(de)(de)零(ling)(ling)件(jian)(jian)的(de)(de)(de)(de)螺(luo)孔中，以其末端(duan)緊(jin)(jin)(jin)(jin)(jin)壓(ya)在(zai)另一(yi)(yi)(yi)零(ling)(ling)件(jian)(jian)的(de)(de)(de)(de)表面上，即把前一(yi)(yi)(yi)零(ling)(ling)件(jian)(jian)固定(ding)(ding)(ding)在(zai)后(hou)一(yi)(yi)(yi)零(ling)(ling)件(jian)(jian)上。 緊(jin)(jin)(jin)(jin)(jin)定(ding)(ding)(ding)螺(luo)釘(ding)(ding)通常由鋼或(huo)不銹鋼材料制(zhi)造，它的(de)(de)(de)(de)端(duan)頭形(xing)狀有錐形(xing)、凹(ao)形(xing)、平頭形(xing)、圓(yuan)柱(zhu)形(xing)和(he)階梯形(xing)等。錐端(duan)或(huo)凹(ao)端(duan)緊(jin)(jin)(jin)(jin)(jin)定(ding)(ding)(ding)螺(luo)釘(ding)(ding)的(de)(de)(de)(de)端(duan)頭直接(jie)(jie)頂緊(jin)(jin)(jin)(jin)(jin)零(ling)(ling)件(jian)(jian)，一(yi)(yi)(yi)般(ban)用(yong)(yong)(yong)于(yu)安裝后(hou)不常拆卸處;平端(duan)緊(jin)(jin)(jin)(jin)(jin)定(ding)(ding)(ding)螺(luo)釘(ding)(ding)的(de)(de)(de)(de)端(duan)頭平滑(hua)，頂緊(jin)(jin)(jin)(jin)(jin)后(hou)不損傷零(ling)(ling)件(jian)(jian)表面，用(yong)(yong)(yong)于(yu)需經常調(diao)節位置(zhi)的(de)(de)(de)(de)聯接(jie)(jie)處，只能傳遞較小(xiao)的(de)(de)(de)(de)荷(he)載(zai);圓(yuan)柱(zhu)端(duan)緊(jin)(jin)(jin)(jin)(jin)定(ding)(ding)(ding)螺(luo)部用(yong)(yong)(yong)在(zai)需經常調(diao)節固定(ding)(ding)(ding)位置(zhi)，它能承(cheng)受較大(da)的(de)(de)(de)(de)荷(he)載(zai)作用(yong)(yong)(yong)，但防松性能差，固定(ding)(ding)(ding)時需采取防松措施;階梯肜(rong)緊(jin)(jin)(jin)(jin)(jin)定(ding)(ding)(ding)螺(luo)釘(ding)(ding)適用(yong)(yong)(yong)于(yu)壁厚較大(da)的(de)(de)(de)(de)零(ling)(ling)件(jian)(jian)固定(ding)(ding)(ding)。

6、自(zi)攻(gong)螺(luo)釘(ding) 自(zi)攻(gong)螺(luo)釘(ding)用(yong)在(zai)被聯接(jie)件上時，被聯接(jie)處(chu)可以不(bu)預(yu)先制出螺(luo)紋(wen)。在(zai)聯接(jie)時利用(yong)螺(luo)釘(ding)直接(jie)攻(gong)出螺(luo)紋(wen)。它常用(yong)于(yu)聯接(jie)厚度較(jiao)薄的金屬板(ban)。其(qi)品(pin)種有錐(zhui)端自(zi)攻(gong)螺(luo)釘(ding)與平端自(zi)攻(gong)螺(luo)釘(ding)兩種。

7、自(zi)攻(gong)鎖緊螺(luo)(luo)釘(ding) 自(zi)攻(gong)鎖緊螺(luo)(luo)釘(ding)不僅具有(you)自(zi)攻(gong)作(zuo)用，而(er)且還具有(you)低擰入力矩和高鎖緊的(de)性能。它的(de)螺(luo)(luo)紋(wen)為三(san)角形截面(mian)，螺(luo)(luo)釘(ding)的(de)表(biao)面(mian)經過淬(cui)硬(ying)處(chu)理(li)，有(you)較(jiao)高的(de)硬(ying)度。它的(de)螺(luo)(luo)紋(wen)規格有(you)M2～M12