螺(luo)絲釘是由(you)頭部(bu)和螺(luo)桿兩(liang)部(bu)分構(gou)成(cheng)的(de)一類常用(yong)(yong)緊固件，主要用(yong)(yong)來連接固定零件，大多是起(qi)到緊固和便于(yu)安(an)裝拆卸的(de)作用(yong)(yong)。隨(sui)著螺(luo)釘在我們日常生活中(zhong)使(shi)用(yong)(yong)越(yue)來越(yue)廣(guang)泛，除了對(dui)其優點(dian)的(de)認同外，人們開始(shi)關注其分類及規(gui)格型號。

螺絲釘種類：

1、開槽(cao)普通(tong)螺(luo)釘(ding)(ding) 多用于較小(xiao)零件的連(lian)接。它有(you)盤(pan)頭(tou)(tou)(tou)(tou)螺(luo)釘(ding)(ding)、圓(yuan)(yuan)柱(zhu)頭(tou)(tou)(tou)(tou)螺(luo)釘(ding)(ding)、半沉(chen)頭(tou)(tou)(tou)(tou)螺(luo)釘(ding)(ding)和沉(chen)頭(tou)(tou)(tou)(tou)螺(luo)釘(ding)(ding)。盤(pan)頭(tou)(tou)(tou)(tou)螺(luo)釘(ding)(ding)和圓(yuan)(yuan)柱(zhu)頭(tou)(tou)(tou)(tou)螺(luo)釘(ding)(ding)的釘(ding)(ding)頭(tou)(tou)(tou)(tou)強度(du)較高，瑁在(zai)普通(tong)的部件連(lian)接上;半沉(chen)頭(tou)(tou)(tou)(tou)螺(luo)釘(ding)(ding)的頭(tou)(tou)(tou)(tou)部呈弧形，安裝(zhuang)后它的頂(ding)端略外露，且美觀(guan)光滑(hua)，一般用于儀器(qi)或精密機械上;沉(chen)頭(tou)(tou)(tou)(tou)螺(luo)釘(ding)(ding)則(ze)用于不允許(xu)釘(ding)(ding)頭(tou)(tou)(tou)(tou)露出的地(di)方(fang)。

2、內六角及(ji)內六角花形螺(luo)(luo)釘 這(zhe)類螺(luo)(luo)釘的頭部能埋(mai)入構(gou)件中，可施加較大的扭矩，連接強度(du)較高(gao)，可代替六角螺(luo)(luo)栓。常(chang)用于結構(gou)要求緊湊，外觀(guan)平滑的聯接處。

3、十字槽普通螺釘 它與開槽普通螺釘的使(shi)用功能相似，可互(hu)相代換，但十字槽普通螺釘的槽形(xing)強度較高，不易擰禿(tu)，外形(xing)較為美觀。使(shi)用時須(xu)用與之配(pei)套的十字形(xing)旋(xuan)具(ju)進行裝卸(xie)。

4、吊環螺釘 吊環螺釘是供安裝和運輸時承重的一種(zhong)五金配件。使(shi)用(yong)時螺釘須(xu)旋進至(zhi)使(shi)支(zhi)承面緊密貼合的位(wei)置，不(bu)準使(shi)用(yong)工具扳緊，也不(bu)允許有垂直于吊環平面的荷(he)載作(zuo)用(yong)在(zai)上面。

5、緊定(ding)(ding)(ding)螺(luo)(luo)釘(ding)(ding) 緊定(ding)(ding)(ding)螺(luo)(luo)釘(ding)(ding)用(yong)(yong)于(yu)固(gu)(gu)定(ding)(ding)(ding)機件(jian)的(de)(de)(de)(de)相(xiang)對位置。把緊定(ding)(ding)(ding)螺(luo)(luo)釘(ding)(ding)旋(xuan)入待(dai)緊定(ding)(ding)(ding)的(de)(de)(de)(de)零(ling)件(jian)的(de)(de)(de)(de)螺(luo)(luo)孔中，以其末端(duan)(duan)緊壓在(zai)另一零(ling)件(jian)的(de)(de)(de)(de)表(biao)面(mian)上，即把前一零(ling)件(jian)固(gu)(gu)定(ding)(ding)(ding)在(zai)后(hou)一零(ling)件(jian)上。 緊定(ding)(ding)(ding)螺(luo)(luo)釘(ding)(ding)通(tong)常由鋼或不(bu)銹鋼材料制造，它(ta)的(de)(de)(de)(de)端(duan)(duan)頭形狀有錐(zhui)(zhui)形、凹形、平(ping)頭形、圓柱(zhu)形和階(jie)梯形等。錐(zhui)(zhui)端(duan)(duan)或凹端(duan)(duan)緊定(ding)(ding)(ding)螺(luo)(luo)釘(ding)(ding)的(de)(de)(de)(de)端(duan)(duan)頭直接頂(ding)緊零(ling)件(jian)，一般用(yong)(yong)于(yu)安(an)裝(zhuang)后(hou)不(bu)常拆卸處;平(ping)端(duan)(duan)緊定(ding)(ding)(ding)螺(luo)(luo)釘(ding)(ding)的(de)(de)(de)(de)端(duan)(duan)頭平(ping)滑(hua)，頂(ding)緊后(hou)不(bu)損傷零(ling)件(jian)表(biao)面(mian)，用(yong)(yong)于(yu)需(xu)經常調節(jie)位置的(de)(de)(de)(de)聯(lian)接處，只能(neng)傳(chuan)遞較小(xiao)的(de)(de)(de)(de)荷載;圓柱(zhu)端(duan)(duan)緊定(ding)(ding)(ding)螺(luo)(luo)部用(yong)(yong)在(zai)需(xu)經常調節(jie)固(gu)(gu)定(ding)(ding)(ding)位置，它(ta)能(neng)承受(shou)較大的(de)(de)(de)(de)荷載作用(yong)(yong)，但防松性能(neng)差，固(gu)(gu)定(ding)(ding)(ding)時需(xu)采取防松措施;階(jie)梯肜緊定(ding)(ding)(ding)螺(luo)(luo)釘(ding)(ding)適(shi)用(yong)(yong)于(yu)壁厚較大的(de)(de)(de)(de)零(ling)件(jian)固(gu)(gu)定(ding)(ding)(ding)。

6、自攻(gong)(gong)(gong)螺(luo)(luo)釘(ding) 自攻(gong)(gong)(gong)螺(luo)(luo)釘(ding)用(yong)在被聯(lian)接件上時(shi)，被聯(lian)接處可以不預先制出螺(luo)(luo)紋。在聯(lian)接時(shi)利用(yong)螺(luo)(luo)釘(ding)直接攻(gong)(gong)(gong)出螺(luo)(luo)紋。它常用(yong)于聯(lian)接厚度較薄的金(jin)屬板。其(qi)品(pin)種有錐(zhui)端自攻(gong)(gong)(gong)螺(luo)(luo)釘(ding)與平(ping)端自攻(gong)(gong)(gong)螺(luo)(luo)釘(ding)兩種。

7、自攻鎖(suo)緊螺(luo)釘(ding) 自攻鎖(suo)緊螺(luo)釘(ding)不僅(jin)具有自攻作(zuo)用，而且還具有低擰入(ru)力矩和高鎖(suo)緊的(de)性(xing)能(neng)。它的(de)螺(luo)紋為三角形截面，螺(luo)釘(ding)的(de)表面經過淬(cui)硬處理，有較高的(de)硬度。它的(de)螺(luo)紋規格有M2～M12