螺(luo)(luo)絲釘(ding)是(shi)由頭部(bu)和螺(luo)(luo)桿兩部(bu)分構成的(de)一類(lei)常(chang)用(yong)緊固件(jian)，主(zhu)要用(yong)來連(lian)接固定零件(jian)，大多是(shi)起到緊固和便于安裝(zhuang)拆卸的(de)作用(yong)。隨(sui)著螺(luo)(luo)釘(ding)在(zai)我們(men)(men)日常(chang)生活中(zhong)使用(yong)越來越廣泛，除了對其優點的(de)認同外，人(ren)們(men)(men)開始關注其分類(lei)及規格型號。

螺絲釘種類：

1、開(kai)槽普(pu)通螺(luo)(luo)釘(ding)(ding)(ding)(ding)(ding) 多用(yong)于較小零件(jian)的(de)連接(jie)。它(ta)有盤頭(tou)螺(luo)(luo)釘(ding)(ding)(ding)(ding)(ding)、圓(yuan)柱(zhu)頭(tou)螺(luo)(luo)釘(ding)(ding)(ding)(ding)(ding)、半沉(chen)頭(tou)螺(luo)(luo)釘(ding)(ding)(ding)(ding)(ding)和沉(chen)頭(tou)螺(luo)(luo)釘(ding)(ding)(ding)(ding)(ding)。盤頭(tou)螺(luo)(luo)釘(ding)(ding)(ding)(ding)(ding)和圓(yuan)柱(zhu)頭(tou)螺(luo)(luo)釘(ding)(ding)(ding)(ding)(ding)的(de)釘(ding)(ding)(ding)(ding)(ding)頭(tou)強度較高(gao)，瑁在普(pu)通的(de)部(bu)件(jian)連接(jie)上;半沉(chen)頭(tou)螺(luo)(luo)釘(ding)(ding)(ding)(ding)(ding)的(de)頭(tou)部(bu)呈(cheng)弧(hu)形，安(an)裝后它(ta)的(de)頂端略外(wai)露，且美觀光滑，一般用(yong)于儀器(qi)或精密機(ji)械上;沉(chen)頭(tou)螺(luo)(luo)釘(ding)(ding)(ding)(ding)(ding)則用(yong)于不允許釘(ding)(ding)(ding)(ding)(ding)頭(tou)露出的(de)地(di)方。

2、內(nei)六角(jiao)及(ji)內(nei)六角(jiao)花形螺(luo)釘(ding) 這類螺(luo)釘(ding)的(de)頭部能埋(mai)入構件中，可施(shi)加(jia)較大(da)的(de)扭矩(ju)，連接(jie)強度較高(gao)，可代(dai)替六角(jiao)螺(luo)栓。常(chang)用于結構要求緊湊(cou)，外觀平滑的(de)聯接(jie)處。

3、十字(zi)槽(cao)(cao)(cao)普通螺釘(ding) 它與(yu)開槽(cao)(cao)(cao)普通螺釘(ding)的使(shi)用(yong)功能相似，可互相代換，但(dan)十字(zi)槽(cao)(cao)(cao)普通螺釘(ding)的槽(cao)(cao)(cao)形(xing)(xing)強度較(jiao)高，不易(yi)擰禿(tu)，外形(xing)(xing)較(jiao)為美觀。使(shi)用(yong)時須用(yong)與(yu)之配(pei)套的十字(zi)形(xing)(xing)旋具進行裝卸。

4、吊(diao)環螺釘(ding) 吊(diao)環螺釘(ding)是供(gong)安裝(zhuang)和運輸時(shi)承(cheng)重(zhong)的一種五金配(pei)件。使用時(shi)螺釘(ding)須旋進至使支承(cheng)面緊密貼合(he)的位(wei)置，不準使用工具扳緊，也不允許有垂直于吊(diao)環平(ping)面的荷載(zai)作用在(zai)上面。

5、緊(jin)(jin)(jin)定(ding)(ding)(ding)(ding)(ding)螺(luo)(luo)釘(ding)(ding) 緊(jin)(jin)(jin)定(ding)(ding)(ding)(ding)(ding)螺(luo)(luo)釘(ding)(ding)用(yong)于固定(ding)(ding)(ding)(ding)(ding)機件(jian)的(de)(de)(de)相對位置。把緊(jin)(jin)(jin)定(ding)(ding)(ding)(ding)(ding)螺(luo)(luo)釘(ding)(ding)旋入待緊(jin)(jin)(jin)定(ding)(ding)(ding)(ding)(ding)的(de)(de)(de)零(ling)件(jian)的(de)(de)(de)螺(luo)(luo)孔中(zhong)，以其末端(duan)緊(jin)(jin)(jin)壓在(zai)另(ling)一(yi)(yi)(yi)零(ling)件(jian)的(de)(de)(de)表(biao)(biao)面(mian)上(shang)(shang)，即(ji)把前一(yi)(yi)(yi)零(ling)件(jian)固定(ding)(ding)(ding)(ding)(ding)在(zai)后一(yi)(yi)(yi)零(ling)件(jian)上(shang)(shang)。 緊(jin)(jin)(jin)定(ding)(ding)(ding)(ding)(ding)螺(luo)(luo)釘(ding)(ding)通常由鋼或(huo)不(bu)(bu)銹鋼材料制造，它的(de)(de)(de)端(duan)頭形(xing)(xing)狀(zhuang)有錐形(xing)(xing)、凹(ao)(ao)形(xing)(xing)、平(ping)頭形(xing)(xing)、圓柱形(xing)(xing)和(he)階梯(ti)形(xing)(xing)等。錐端(duan)或(huo)凹(ao)(ao)端(duan)緊(jin)(jin)(jin)定(ding)(ding)(ding)(ding)(ding)螺(luo)(luo)釘(ding)(ding)的(de)(de)(de)端(duan)頭直接(jie)頂(ding)緊(jin)(jin)(jin)零(ling)件(jian)，一(yi)(yi)(yi)般用(yong)于安(an)裝后不(bu)(bu)常拆卸處;平(ping)端(duan)緊(jin)(jin)(jin)定(ding)(ding)(ding)(ding)(ding)螺(luo)(luo)釘(ding)(ding)的(de)(de)(de)端(duan)頭平(ping)滑，頂(ding)緊(jin)(jin)(jin)后不(bu)(bu)損傷(shang)零(ling)件(jian)表(biao)(biao)面(mian)，用(yong)于需經(jing)常調節位置的(de)(de)(de)聯接(jie)處，只(zhi)能傳遞較小的(de)(de)(de)荷載;圓柱端(duan)緊(jin)(jin)(jin)定(ding)(ding)(ding)(ding)(ding)螺(luo)(luo)部用(yong)在(zai)需經(jing)常調節固定(ding)(ding)(ding)(ding)(ding)位置，它能承受較大的(de)(de)(de)荷載作用(yong)，但防松(song)性能差，固定(ding)(ding)(ding)(ding)(ding)時需采取防松(song)措施;階梯(ti)肜緊(jin)(jin)(jin)定(ding)(ding)(ding)(ding)(ding)螺(luo)(luo)釘(ding)(ding)適用(yong)于壁厚(hou)較大的(de)(de)(de)零(ling)件(jian)固定(ding)(ding)(ding)(ding)(ding)。

6、自(zi)攻(gong)(gong)(gong)螺(luo)釘(ding) 自(zi)攻(gong)(gong)(gong)螺(luo)釘(ding)用(yong)(yong)在(zai)被(bei)聯(lian)接(jie)件上時，被(bei)聯(lian)接(jie)處可以不預先制(zhi)出(chu)螺(luo)紋。在(zai)聯(lian)接(jie)時利(li)用(yong)(yong)螺(luo)釘(ding)直接(jie)攻(gong)(gong)(gong)出(chu)螺(luo)紋。它常(chang)用(yong)(yong)于(yu)聯(lian)接(jie)厚度較薄的(de)金屬板(ban)。其品(pin)種有錐端(duan)自(zi)攻(gong)(gong)(gong)螺(luo)釘(ding)與(yu)平端(duan)自(zi)攻(gong)(gong)(gong)螺(luo)釘(ding)兩(liang)種。

7、自(zi)攻鎖(suo)(suo)緊(jin)螺(luo)(luo)釘(ding) 自(zi)攻鎖(suo)(suo)緊(jin)螺(luo)(luo)釘(ding)不僅具有自(zi)攻作用，而且(qie)還具有低擰入力矩(ju)和高(gao)鎖(suo)(suo)緊(jin)的(de)性能(neng)。它(ta)的(de)螺(luo)(luo)紋為(wei)三角形(xing)截(jie)面，螺(luo)(luo)釘(ding)的(de)表面經過淬(cui)硬處理(li)，有較(jiao)高(gao)的(de)硬度(du)。它(ta)的(de)螺(luo)(luo)紋規格有M2～M12