螺絲釘是(shi)由頭部(bu)(bu)和(he)螺桿兩部(bu)(bu)分(fen)構成的(de)一類(lei)常(chang)用(yong)緊(jin)固(gu)件，主要(yao)用(yong)來連接固(gu)定零件，大(da)多是(shi)起(qi)到緊(jin)固(gu)和(he)便于安裝拆卸(xie)的(de)作用(yong)。隨著螺釘在我們(men)日常(chang)生活中使用(yong)越(yue)(yue)來越(yue)(yue)廣(guang)泛，除了對其優點的(de)認同外，人們(men)開始關注其分(fen)類(lei)及規格(ge)型號。

螺絲釘種類：

1、開槽普通(tong)螺(luo)(luo)釘(ding)(ding) 多用(yong)(yong)于(yu)較(jiao)小零件(jian)(jian)的(de)(de)連接(jie)(jie)。它有盤(pan)頭(tou)(tou)螺(luo)(luo)釘(ding)(ding)、圓柱頭(tou)(tou)螺(luo)(luo)釘(ding)(ding)、半(ban)沉(chen)(chen)頭(tou)(tou)螺(luo)(luo)釘(ding)(ding)和(he)沉(chen)(chen)頭(tou)(tou)螺(luo)(luo)釘(ding)(ding)。盤(pan)頭(tou)(tou)螺(luo)(luo)釘(ding)(ding)和(he)圓柱頭(tou)(tou)螺(luo)(luo)釘(ding)(ding)的(de)(de)釘(ding)(ding)頭(tou)(tou)強(qiang)度(du)較(jiao)高，瑁在普通(tong)的(de)(de)部件(jian)(jian)連接(jie)(jie)上;半(ban)沉(chen)(chen)頭(tou)(tou)螺(luo)(luo)釘(ding)(ding)的(de)(de)頭(tou)(tou)部呈弧(hu)形，安裝后(hou)它的(de)(de)頂端略外(wai)露，且美(mei)觀光滑(hua)，一般用(yong)(yong)于(yu)儀器或精密機械(xie)上;沉(chen)(chen)頭(tou)(tou)螺(luo)(luo)釘(ding)(ding)則用(yong)(yong)于(yu)不允許釘(ding)(ding)頭(tou)(tou)露出的(de)(de)地(di)方。

2、內(nei)六(liu)(liu)角(jiao)及內(nei)六(liu)(liu)角(jiao)花形螺(luo)釘 這類螺(luo)釘的頭部(bu)能埋入構件(jian)中，可(ke)施(shi)加較(jiao)大的扭(niu)矩，連接強度較(jiao)高，可(ke)代替六(liu)(liu)角(jiao)螺(luo)栓。常用(yong)于結構要求緊湊，外(wai)觀平(ping)滑(hua)的聯接處。

3、十(shi)字(zi)槽(cao)(cao)普(pu)通螺(luo)釘 它與開(kai)槽(cao)(cao)普(pu)通螺(luo)釘的(de)(de)使用功(gong)能相(xiang)似，可互相(xiang)代換(huan)，但十(shi)字(zi)槽(cao)(cao)普(pu)通螺(luo)釘的(de)(de)槽(cao)(cao)形(xing)強度較(jiao)高(gao)，不(bu)易擰禿，外形(xing)較(jiao)為美觀。使用時須用與之配(pei)套的(de)(de)十(shi)字(zi)形(xing)旋具進行裝卸(xie)。

4、吊環(huan)螺釘 吊環(huan)螺釘是(shi)供安裝和運輸時(shi)承重的(de)一種五金配件(jian)。使(shi)用時(shi)螺釘須旋進(jin)至使(shi)支承面(mian)緊密貼合的(de)位置(zhi)，不準使(shi)用工具扳緊，也不允許有垂(chui)直于(yu)吊環(huan)平面(mian)的(de)荷載作用在上面(mian)。

5、緊(jin)(jin)(jin)定(ding)(ding)(ding)(ding)螺(luo)(luo)釘(ding) 緊(jin)(jin)(jin)定(ding)(ding)(ding)(ding)螺(luo)(luo)釘(ding)用(yong)于固(gu)(gu)(gu)定(ding)(ding)(ding)(ding)機(ji)件(jian)(jian)的(de)(de)(de)相對位置。把(ba)緊(jin)(jin)(jin)定(ding)(ding)(ding)(ding)螺(luo)(luo)釘(ding)旋入待(dai)緊(jin)(jin)(jin)定(ding)(ding)(ding)(ding)的(de)(de)(de)零(ling)(ling)件(jian)(jian)的(de)(de)(de)螺(luo)(luo)孔(kong)中，以其末端(duan)(duan)緊(jin)(jin)(jin)壓在(zai)另一零(ling)(ling)件(jian)(jian)的(de)(de)(de)表面上，即把(ba)前一零(ling)(ling)件(jian)(jian)固(gu)(gu)(gu)定(ding)(ding)(ding)(ding)在(zai)后一零(ling)(ling)件(jian)(jian)上。 緊(jin)(jin)(jin)定(ding)(ding)(ding)(ding)螺(luo)(luo)釘(ding)通(tong)常(chang)(chang)由鋼(gang)或(huo)不銹鋼(gang)材料(liao)制造，它的(de)(de)(de)端(duan)(duan)頭(tou)(tou)形(xing)(xing)狀有錐形(xing)(xing)、凹形(xing)(xing)、平(ping)頭(tou)(tou)形(xing)(xing)、圓柱形(xing)(xing)和階(jie)梯形(xing)(xing)等。錐端(duan)(duan)或(huo)凹端(duan)(duan)緊(jin)(jin)(jin)定(ding)(ding)(ding)(ding)螺(luo)(luo)釘(ding)的(de)(de)(de)端(duan)(duan)頭(tou)(tou)直接頂(ding)緊(jin)(jin)(jin)零(ling)(ling)件(jian)(jian)，一般(ban)用(yong)于安裝后不常(chang)(chang)拆(chai)卸處(chu);平(ping)端(duan)(duan)緊(jin)(jin)(jin)定(ding)(ding)(ding)(ding)螺(luo)(luo)釘(ding)的(de)(de)(de)端(duan)(duan)頭(tou)(tou)平(ping)滑，頂(ding)緊(jin)(jin)(jin)后不損傷零(ling)(ling)件(jian)(jian)表面，用(yong)于需經常(chang)(chang)調節位置的(de)(de)(de)聯接處(chu)，只能(neng)(neng)(neng)傳遞較(jiao)小的(de)(de)(de)荷載;圓柱端(duan)(duan)緊(jin)(jin)(jin)定(ding)(ding)(ding)(ding)螺(luo)(luo)部用(yong)在(zai)需經常(chang)(chang)調節固(gu)(gu)(gu)定(ding)(ding)(ding)(ding)位置，它能(neng)(neng)(neng)承受較(jiao)大的(de)(de)(de)荷載作用(yong)，但防松(song)性能(neng)(neng)(neng)差，固(gu)(gu)(gu)定(ding)(ding)(ding)(ding)時需采取防松(song)措施(shi);階(jie)梯肜緊(jin)(jin)(jin)定(ding)(ding)(ding)(ding)螺(luo)(luo)釘(ding)適用(yong)于壁厚較(jiao)大的(de)(de)(de)零(ling)(ling)件(jian)(jian)固(gu)(gu)(gu)定(ding)(ding)(ding)(ding)。

6、自(zi)(zi)(zi)攻(gong)(gong)(gong)螺(luo)(luo)釘(ding) 自(zi)(zi)(zi)攻(gong)(gong)(gong)螺(luo)(luo)釘(ding)用(yong)在(zai)被(bei)聯(lian)(lian)(lian)接(jie)件上時，被(bei)聯(lian)(lian)(lian)接(jie)處可以不預先制出(chu)螺(luo)(luo)紋。在(zai)聯(lian)(lian)(lian)接(jie)時利用(yong)螺(luo)(luo)釘(ding)直接(jie)攻(gong)(gong)(gong)出(chu)螺(luo)(luo)紋。它常用(yong)于聯(lian)(lian)(lian)接(jie)厚(hou)度較(jiao)薄的金(jin)屬(shu)板(ban)。其品(pin)種有(you)錐端(duan)自(zi)(zi)(zi)攻(gong)(gong)(gong)螺(luo)(luo)釘(ding)與(yu)平端(duan)自(zi)(zi)(zi)攻(gong)(gong)(gong)螺(luo)(luo)釘(ding)兩種。

7、自攻鎖(suo)緊(jin)螺(luo)釘(ding)(ding) 自攻鎖(suo)緊(jin)螺(luo)釘(ding)(ding)不僅具(ju)(ju)有(you)自攻作用，而且還具(ju)(ju)有(you)低擰入力(li)矩和高(gao)(gao)鎖(suo)緊(jin)的(de)(de)性能。它的(de)(de)螺(luo)紋為三角(jiao)形截面(mian)，螺(luo)釘(ding)(ding)的(de)(de)表面(mian)經過(guo)淬硬處理，有(you)較高(gao)(gao)的(de)(de)硬度。它的(de)(de)螺(luo)紋規格有(you)M2～M12