螺絲釘是由頭部和(he)螺桿兩部分構成(cheng)的(de)一類常用(yong)緊(jin)固件(jian)，主要用(yong)來連接(jie)固定零件(jian)，大(da)多(duo)是起到緊(jin)固和(he)便于(yu)安裝(zhuang)拆(chai)卸(xie)的(de)作用(yong)。隨著(zhu)螺釘在我們(men)日常生活中(zhong)使(shi)用(yong)越(yue)(yue)來越(yue)(yue)廣(guang)泛，除了對其優點(dian)的(de)認(ren)同(tong)外，人們(men)開始關注其分類及規(gui)格型號。

螺絲釘種類：

1、開(kai)槽普通螺(luo)(luo)釘(ding) 多(duo)用(yong)于(yu)較(jiao)小(xiao)零件的(de)(de)連接。它有盤(pan)頭(tou)(tou)螺(luo)(luo)釘(ding)、圓(yuan)柱頭(tou)(tou)螺(luo)(luo)釘(ding)、半沉(chen)(chen)頭(tou)(tou)螺(luo)(luo)釘(ding)和沉(chen)(chen)頭(tou)(tou)螺(luo)(luo)釘(ding)。盤(pan)頭(tou)(tou)螺(luo)(luo)釘(ding)和圓(yuan)柱頭(tou)(tou)螺(luo)(luo)釘(ding)的(de)(de)釘(ding)頭(tou)(tou)強度較(jiao)高，瑁在普通的(de)(de)部件連接上;半沉(chen)(chen)頭(tou)(tou)螺(luo)(luo)釘(ding)的(de)(de)頭(tou)(tou)部呈弧形，安裝后(hou)它的(de)(de)頂端略外(wai)露，且(qie)美觀光滑，一般用(yong)于(yu)儀器或精密機械上;沉(chen)(chen)頭(tou)(tou)螺(luo)(luo)釘(ding)則用(yong)于(yu)不允許釘(ding)頭(tou)(tou)露出的(de)(de)地方。

2、內(nei)六角及(ji)內(nei)六角花形(xing)螺釘 這類螺釘的(de)頭部能(neng)埋入(ru)構(gou)件中，可施加較大(da)的(de)扭矩(ju)，連(lian)接(jie)強度較高，可代替六角螺栓。常用于結構(gou)要(yao)求緊湊，外觀平滑的(de)聯接(jie)處。

3、十字(zi)槽(cao)普通螺釘(ding)(ding) 它與開槽(cao)普通螺釘(ding)(ding)的(de)使(shi)用功能相似，可互相代(dai)換(huan)，但十字(zi)槽(cao)普通螺釘(ding)(ding)的(de)槽(cao)形強度(du)較(jiao)高(gao)，不易擰(ning)禿，外形較(jiao)為美觀。使(shi)用時須用與之配套的(de)十字(zi)形旋(xuan)具進行(xing)裝卸。

4、吊(diao)環螺釘 吊(diao)環螺釘是供安(an)裝和運輸時(shi)承重的一種五金配件(jian)。使用時(shi)螺釘須旋進(jin)至使支承面緊密貼(tie)合的位置，不準使用工具扳緊，也不允(yun)許有(you)垂直于吊(diao)環平面的荷(he)載作用在上面。

5、緊(jin)(jin)(jin)(jin)定(ding)(ding)(ding)螺釘(ding)(ding) 緊(jin)(jin)(jin)(jin)定(ding)(ding)(ding)螺釘(ding)(ding)用(yong)(yong)于(yu)固(gu)定(ding)(ding)(ding)機件(jian)(jian)(jian)的(de)(de)相對位置(zhi)。把(ba)緊(jin)(jin)(jin)(jin)定(ding)(ding)(ding)螺釘(ding)(ding)旋入待(dai)緊(jin)(jin)(jin)(jin)定(ding)(ding)(ding)的(de)(de)零(ling)(ling)(ling)件(jian)(jian)(jian)的(de)(de)螺孔中，以其(qi)末端(duan)(duan)(duan)緊(jin)(jin)(jin)(jin)壓在(zai)另一(yi)零(ling)(ling)(ling)件(jian)(jian)(jian)的(de)(de)表面上，即(ji)把(ba)前一(yi)零(ling)(ling)(ling)件(jian)(jian)(jian)固(gu)定(ding)(ding)(ding)在(zai)后一(yi)零(ling)(ling)(ling)件(jian)(jian)(jian)上。 緊(jin)(jin)(jin)(jin)定(ding)(ding)(ding)螺釘(ding)(ding)通常由鋼或(huo)(huo)不銹鋼材料制(zhi)造，它的(de)(de)端(duan)(duan)(duan)頭(tou)形狀有(you)錐(zhui)形、凹(ao)形、平頭(tou)形、圓(yuan)柱形和階(jie)梯形等(deng)。錐(zhui)端(duan)(duan)(duan)或(huo)(huo)凹(ao)端(duan)(duan)(duan)緊(jin)(jin)(jin)(jin)定(ding)(ding)(ding)螺釘(ding)(ding)的(de)(de)端(duan)(duan)(duan)頭(tou)直接頂緊(jin)(jin)(jin)(jin)零(ling)(ling)(ling)件(jian)(jian)(jian)，一(yi)般(ban)用(yong)(yong)于(yu)安裝(zhuang)后不常拆卸處(chu);平端(duan)(duan)(duan)緊(jin)(jin)(jin)(jin)定(ding)(ding)(ding)螺釘(ding)(ding)的(de)(de)端(duan)(duan)(duan)頭(tou)平滑，頂緊(jin)(jin)(jin)(jin)后不損傷零(ling)(ling)(ling)件(jian)(jian)(jian)表面，用(yong)(yong)于(yu)需經常調節(jie)位置(zhi)的(de)(de)聯接處(chu)，只(zhi)能傳遞(di)較(jiao)小的(de)(de)荷載;圓(yuan)柱端(duan)(duan)(duan)緊(jin)(jin)(jin)(jin)定(ding)(ding)(ding)螺部用(yong)(yong)在(zai)需經常調節(jie)固(gu)定(ding)(ding)(ding)位置(zhi)，它能承受(shou)較(jiao)大的(de)(de)荷載作用(yong)(yong)，但(dan)防松性(xing)能差，固(gu)定(ding)(ding)(ding)時需采取防松措施;階(jie)梯肜緊(jin)(jin)(jin)(jin)定(ding)(ding)(ding)螺釘(ding)(ding)適用(yong)(yong)于(yu)壁(bi)厚較(jiao)大的(de)(de)零(ling)(ling)(ling)件(jian)(jian)(jian)固(gu)定(ding)(ding)(ding)。

6、自攻(gong)螺(luo)釘(ding) 自攻(gong)螺(luo)釘(ding)用(yong)(yong)(yong)在被聯(lian)接件上時(shi)，被聯(lian)接處可以不預先制出螺(luo)紋。在聯(lian)接時(shi)利用(yong)(yong)(yong)螺(luo)釘(ding)直接攻(gong)出螺(luo)紋。它常(chang)用(yong)(yong)(yong)于聯(lian)接厚度較薄的金屬板。其品種(zhong)有錐端(duan)自攻(gong)螺(luo)釘(ding)與平端(duan)自攻(gong)螺(luo)釘(ding)兩種(zhong)。

7、自(zi)(zi)攻(gong)鎖緊(jin)螺(luo)(luo)釘(ding)(ding) 自(zi)(zi)攻(gong)鎖緊(jin)螺(luo)(luo)釘(ding)(ding)不僅具有自(zi)(zi)攻(gong)作(zuo)用，而(er)且還具有低(di)擰入力矩和高(gao)鎖緊(jin)的(de)性能。它的(de)螺(luo)(luo)紋為(wei)三(san)角形截(jie)面(mian)，螺(luo)(luo)釘(ding)(ding)的(de)表(biao)面(mian)經過(guo)淬硬處理(li)，有較高(gao)的(de)硬度(du)。它的(de)螺(luo)(luo)紋規格有M2～M12