螺絲釘是由頭部(bu)(bu)和(he)螺桿兩部(bu)(bu)分(fen)構成的一類(lei)常用(yong)緊固(gu)(gu)件，主要(yao)用(yong)來(lai)連(lian)接固(gu)(gu)定(ding)零件，大多是起到緊固(gu)(gu)和(he)便于安裝拆卸的作用(yong)。隨著螺釘在(zai)我們(men)日常生(sheng)活中使用(yong)越來(lai)越廣泛，除了(le)對(dui)其優點的認同外，人們(men)開(kai)始關注其分(fen)類(lei)及規格型號。

螺絲釘種類：

1、開槽普(pu)通(tong)螺(luo)(luo)(luo)(luo)釘 多用(yong)于(yu)較(jiao)小零件的連接(jie)。它有盤頭(tou)(tou)(tou)螺(luo)(luo)(luo)(luo)釘、圓柱(zhu)(zhu)頭(tou)(tou)(tou)螺(luo)(luo)(luo)(luo)釘、半沉(chen)(chen)頭(tou)(tou)(tou)螺(luo)(luo)(luo)(luo)釘和(he)沉(chen)(chen)頭(tou)(tou)(tou)螺(luo)(luo)(luo)(luo)釘。盤頭(tou)(tou)(tou)螺(luo)(luo)(luo)(luo)釘和(he)圓柱(zhu)(zhu)頭(tou)(tou)(tou)螺(luo)(luo)(luo)(luo)釘的釘頭(tou)(tou)(tou)強度較(jiao)高，瑁在普(pu)通(tong)的部件連接(jie)上;半沉(chen)(chen)頭(tou)(tou)(tou)螺(luo)(luo)(luo)(luo)釘的頭(tou)(tou)(tou)部呈弧形，安(an)裝后它的頂端略外露(lu)，且(qie)美觀光滑(hua)，一般用(yong)于(yu)儀(yi)器或精密機(ji)械上;沉(chen)(chen)頭(tou)(tou)(tou)螺(luo)(luo)(luo)(luo)釘則(ze)用(yong)于(yu)不允許釘頭(tou)(tou)(tou)露(lu)出的地方。

2、內六角(jiao)及內六角(jiao)花形(xing)螺(luo)釘 這類螺(luo)釘的頭部能埋入構(gou)件中(zhong)，可(ke)施加較(jiao)大的扭矩，連接(jie)強度較(jiao)高，可(ke)代替六角(jiao)螺(luo)栓。常(chang)用于結構(gou)要求緊湊，外觀平滑的聯(lian)接(jie)處(chu)。

3、十(shi)字槽普通螺(luo)釘(ding)(ding) 它與開槽普通螺(luo)釘(ding)(ding)的使用(yong)功能相似，可互相代換，但(dan)十(shi)字槽普通螺(luo)釘(ding)(ding)的槽形(xing)強(qiang)度較(jiao)高，不易擰禿，外(wai)形(xing)較(jiao)為美觀。使用(yong)時須用(yong)與之配套的十(shi)字形(xing)旋具(ju)進(jin)行裝卸(xie)。

4、吊(diao)環螺釘 吊(diao)環螺釘是(shi)供安(an)裝和運輸時承重的一種五金配件(jian)。使(shi)用時螺釘須旋進至使(shi)支承面緊密貼合的位(wei)置，不準使(shi)用工具扳緊，也不允許有垂(chui)直(zhi)于吊(diao)環平面的荷載作用在上面。

5、緊(jin)定(ding)(ding)(ding)(ding)(ding)螺(luo)(luo)釘 緊(jin)定(ding)(ding)(ding)(ding)(ding)螺(luo)(luo)釘用(yong)(yong)于(yu)(yu)固(gu)(gu)定(ding)(ding)(ding)(ding)(ding)機件的(de)(de)(de)相對位置。把(ba)緊(jin)定(ding)(ding)(ding)(ding)(ding)螺(luo)(luo)釘旋入待緊(jin)定(ding)(ding)(ding)(ding)(ding)的(de)(de)(de)零(ling)(ling)(ling)件的(de)(de)(de)螺(luo)(luo)孔中，以其末端(duan)緊(jin)壓在(zai)(zai)另一零(ling)(ling)(ling)件的(de)(de)(de)表面(mian)(mian)上(shang)，即(ji)把(ba)前一零(ling)(ling)(ling)件固(gu)(gu)定(ding)(ding)(ding)(ding)(ding)在(zai)(zai)后(hou)一零(ling)(ling)(ling)件上(shang)。 緊(jin)定(ding)(ding)(ding)(ding)(ding)螺(luo)(luo)釘通常由(you)鋼或(huo)不(bu)銹鋼材料制(zhi)造，它(ta)的(de)(de)(de)端(duan)頭(tou)形(xing)狀有錐形(xing)、凹形(xing)、平(ping)頭(tou)形(xing)、圓柱形(xing)和階梯形(xing)等。錐端(duan)或(huo)凹端(duan)緊(jin)定(ding)(ding)(ding)(ding)(ding)螺(luo)(luo)釘的(de)(de)(de)端(duan)頭(tou)直接(jie)頂(ding)緊(jin)零(ling)(ling)(ling)件，一般(ban)用(yong)(yong)于(yu)(yu)安裝后(hou)不(bu)常拆卸處;平(ping)端(duan)緊(jin)定(ding)(ding)(ding)(ding)(ding)螺(luo)(luo)釘的(de)(de)(de)端(duan)頭(tou)平(ping)滑，頂(ding)緊(jin)后(hou)不(bu)損傷零(ling)(ling)(ling)件表面(mian)(mian)，用(yong)(yong)于(yu)(yu)需經常調節(jie)位置的(de)(de)(de)聯接(jie)處，只能傳(chuan)遞(di)較(jiao)(jiao)小(xiao)的(de)(de)(de)荷(he)載;圓柱端(duan)緊(jin)定(ding)(ding)(ding)(ding)(ding)螺(luo)(luo)部用(yong)(yong)在(zai)(zai)需經常調節(jie)固(gu)(gu)定(ding)(ding)(ding)(ding)(ding)位置，它(ta)能承(cheng)受較(jiao)(jiao)大的(de)(de)(de)荷(he)載作用(yong)(yong)，但防(fang)松(song)性能差，固(gu)(gu)定(ding)(ding)(ding)(ding)(ding)時(shi)需采(cai)取防(fang)松(song)措(cuo)施;階梯肜緊(jin)定(ding)(ding)(ding)(ding)(ding)螺(luo)(luo)釘適用(yong)(yong)于(yu)(yu)壁厚較(jiao)(jiao)大的(de)(de)(de)零(ling)(ling)(ling)件固(gu)(gu)定(ding)(ding)(ding)(ding)(ding)。

6、自(zi)攻(gong)螺釘(ding) 自(zi)攻(gong)螺釘(ding)用(yong)在被(bei)(bei)聯接件上(shang)時，被(bei)(bei)聯接處可(ke)以不預先制(zhi)出(chu)螺紋(wen)。在聯接時利用(yong)螺釘(ding)直(zhi)接攻(gong)出(chu)螺紋(wen)。它常用(yong)于聯接厚度(du)較(jiao)薄的金(jin)屬板。其品種(zhong)有(you)錐端自(zi)攻(gong)螺釘(ding)與平端自(zi)攻(gong)螺釘(ding)兩種(zhong)。

7、自攻鎖緊(jin)(jin)螺釘 自攻鎖緊(jin)(jin)螺釘不僅具有(you)(you)(you)自攻作用，而且還(huan)具有(you)(you)(you)低擰入力矩和高鎖緊(jin)(jin)的(de)(de)性能。它的(de)(de)螺紋為三(san)角形截面，螺釘的(de)(de)表面經過淬硬處理，有(you)(you)(you)較高的(de)(de)硬度(du)。它的(de)(de)螺紋規(gui)格(ge)有(you)(you)(you)M2～M12