螺絲釘是由頭部和螺桿兩部分構成的一(yi)類常(chang)用(yong)緊(jin)固(gu)件，主要用(yong)來(lai)連接固(gu)定零(ling)件，大多是起到緊(jin)固(gu)和便于安裝拆卸的作用(yong)。隨(sui)著螺釘在我們日常(chang)生活(huo)中使用(yong)越(yue)來(lai)越(yue)廣泛，除了對(dui)其優點的認同(tong)外，人們開始關注(zhu)其分類及規格型號。

螺絲釘種類：

1、開(kai)槽普(pu)通(tong)螺(luo)(luo)(luo)釘(ding)(ding)(ding) 多用(yong)于(yu)較小零(ling)件(jian)的(de)(de)(de)連(lian)(lian)接。它有盤頭(tou)(tou)螺(luo)(luo)(luo)釘(ding)(ding)(ding)、圓柱(zhu)(zhu)頭(tou)(tou)螺(luo)(luo)(luo)釘(ding)(ding)(ding)、半沉(chen)頭(tou)(tou)螺(luo)(luo)(luo)釘(ding)(ding)(ding)和(he)沉(chen)頭(tou)(tou)螺(luo)(luo)(luo)釘(ding)(ding)(ding)。盤頭(tou)(tou)螺(luo)(luo)(luo)釘(ding)(ding)(ding)和(he)圓柱(zhu)(zhu)頭(tou)(tou)螺(luo)(luo)(luo)釘(ding)(ding)(ding)的(de)(de)(de)釘(ding)(ding)(ding)頭(tou)(tou)強度(du)較高(gao)，瑁在普(pu)通(tong)的(de)(de)(de)部(bu)件(jian)連(lian)(lian)接上(shang);半沉(chen)頭(tou)(tou)螺(luo)(luo)(luo)釘(ding)(ding)(ding)的(de)(de)(de)頭(tou)(tou)部(bu)呈(cheng)弧(hu)形，安裝后(hou)它的(de)(de)(de)頂端略(lve)外露，且(qie)美觀光滑，一(yi)般用(yong)于(yu)儀器或(huo)精(jing)密機(ji)械上(shang);沉(chen)頭(tou)(tou)螺(luo)(luo)(luo)釘(ding)(ding)(ding)則(ze)用(yong)于(yu)不允(yun)許釘(ding)(ding)(ding)頭(tou)(tou)露出的(de)(de)(de)地(di)方。

2、內(nei)六(liu)(liu)角(jiao)及內(nei)六(liu)(liu)角(jiao)花形螺釘 這類螺釘的頭(tou)部(bu)能埋入(ru)構件中，可施加較大的扭矩，連接強度較高，可代(dai)替六(liu)(liu)角(jiao)螺栓(shuan)。常(chang)用于(yu)結構要求緊湊，外(wai)觀平滑的聯(lian)接處(chu)。

3、十字(zi)(zi)槽普通螺釘 它與開槽普通螺釘的(de)使(shi)用(yong)(yong)功(gong)能(neng)相似，可互相代換，但(dan)十字(zi)(zi)槽普通螺釘的(de)槽形強度(du)較(jiao)(jiao)高，不易(yi)擰(ning)禿，外形較(jiao)(jiao)為美觀。使(shi)用(yong)(yong)時(shi)須用(yong)(yong)與之配套(tao)的(de)十字(zi)(zi)形旋具進行裝卸。

4、吊(diao)環螺(luo)釘(ding) 吊(diao)環螺(luo)釘(ding)是供安(an)裝(zhuang)和運(yun)輸時承重的(de)一種五金配(pei)件。使(shi)(shi)用時螺(luo)釘(ding)須(xu)旋進至使(shi)(shi)支承面(mian)緊密貼合的(de)位置，不準使(shi)(shi)用工具扳緊，也(ye)不允許有(you)垂直于吊(diao)環平面(mian)的(de)荷載作用在上面(mian)。

5、緊(jin)(jin)(jin)定(ding)(ding)(ding)(ding)螺釘(ding)(ding) 緊(jin)(jin)(jin)定(ding)(ding)(ding)(ding)螺釘(ding)(ding)用(yong)于固(gu)定(ding)(ding)(ding)(ding)機(ji)件(jian)的(de)(de)相對位置。把緊(jin)(jin)(jin)定(ding)(ding)(ding)(ding)螺釘(ding)(ding)旋入待緊(jin)(jin)(jin)定(ding)(ding)(ding)(ding)的(de)(de)零(ling)(ling)件(jian)的(de)(de)螺孔中(zhong)，以其末端(duan)緊(jin)(jin)(jin)壓在另一(yi)(yi)零(ling)(ling)件(jian)的(de)(de)表面上，即把前一(yi)(yi)零(ling)(ling)件(jian)固(gu)定(ding)(ding)(ding)(ding)在后一(yi)(yi)零(ling)(ling)件(jian)上。 緊(jin)(jin)(jin)定(ding)(ding)(ding)(ding)螺釘(ding)(ding)通常(chang)由鋼或不銹鋼材料制造(zao)，它的(de)(de)端(duan)頭(tou)形(xing)(xing)狀(zhuang)有(you)錐(zhui)形(xing)(xing)、凹形(xing)(xing)、平(ping)頭(tou)形(xing)(xing)、圓(yuan)柱(zhu)形(xing)(xing)和階(jie)梯(ti)形(xing)(xing)等。錐(zhui)端(duan)或凹端(duan)緊(jin)(jin)(jin)定(ding)(ding)(ding)(ding)螺釘(ding)(ding)的(de)(de)端(duan)頭(tou)直(zhi)接(jie)(jie)頂緊(jin)(jin)(jin)零(ling)(ling)件(jian)，一(yi)(yi)般用(yong)于安裝(zhuang)后不常(chang)拆(chai)卸處;平(ping)端(duan)緊(jin)(jin)(jin)定(ding)(ding)(ding)(ding)螺釘(ding)(ding)的(de)(de)端(duan)頭(tou)平(ping)滑，頂緊(jin)(jin)(jin)后不損傷零(ling)(ling)件(jian)表面，用(yong)于需(xu)經(jing)常(chang)調(diao)(diao)節(jie)位置的(de)(de)聯接(jie)(jie)處，只能傳遞(di)較小的(de)(de)荷(he)載;圓(yuan)柱(zhu)端(duan)緊(jin)(jin)(jin)定(ding)(ding)(ding)(ding)螺部用(yong)在需(xu)經(jing)常(chang)調(diao)(diao)節(jie)固(gu)定(ding)(ding)(ding)(ding)位置，它能承受較大(da)的(de)(de)荷(he)載作(zuo)用(yong)，但(dan)防松性能差，固(gu)定(ding)(ding)(ding)(ding)時需(xu)采取防松措施(shi);階(jie)梯(ti)肜緊(jin)(jin)(jin)定(ding)(ding)(ding)(ding)螺釘(ding)(ding)適(shi)用(yong)于壁厚較大(da)的(de)(de)零(ling)(ling)件(jian)固(gu)定(ding)(ding)(ding)(ding)。

6、自(zi)攻(gong)螺(luo)釘(ding)(ding) 自(zi)攻(gong)螺(luo)釘(ding)(ding)用(yong)在被聯接件上時(shi)，被聯接處可以不預先(xian)制(zhi)出螺(luo)紋。在聯接時(shi)利(li)用(yong)螺(luo)釘(ding)(ding)直(zhi)接攻(gong)出螺(luo)紋。它常用(yong)于聯接厚度較薄的金(jin)屬板。其品種有錐端自(zi)攻(gong)螺(luo)釘(ding)(ding)與平端自(zi)攻(gong)螺(luo)釘(ding)(ding)兩種。

7、自(zi)攻(gong)(gong)鎖(suo)緊螺釘 自(zi)攻(gong)(gong)鎖(suo)緊螺釘不(bu)僅具有自(zi)攻(gong)(gong)作用，而且還(huan)具有低擰入(ru)力矩和高鎖(suo)緊的(de)性能。它(ta)的(de)螺紋為三角(jiao)形截面，螺釘的(de)表(biao)面經過(guo)淬硬處(chu)理，有較高的(de)硬度。它(ta)的(de)螺紋規格有M2～M12