螺絲釘是由頭(tou)部和螺桿兩部分(fen)構成的(de)一類(lei)常用緊固(gu)件，主(zhu)要用來連(lian)接固(gu)定零件，大多是起(qi)到緊固(gu)和便于安(an)裝拆卸的(de)作用。隨著(zhu)螺釘在(zai)我們日常生活中使(shi)用越來越廣泛(fan)，除了(le)對(dui)其優點(dian)的(de)認同外，人們開始關注其分(fen)類(lei)及規格型號。

螺絲釘種類：

1、開槽普通螺(luo)(luo)釘(ding)(ding) 多用(yong)(yong)于較小零件的(de)連接。它有盤頭(tou)(tou)(tou)(tou)螺(luo)(luo)釘(ding)(ding)、圓柱頭(tou)(tou)(tou)(tou)螺(luo)(luo)釘(ding)(ding)、半沉頭(tou)(tou)(tou)(tou)螺(luo)(luo)釘(ding)(ding)和(he)沉頭(tou)(tou)(tou)(tou)螺(luo)(luo)釘(ding)(ding)。盤頭(tou)(tou)(tou)(tou)螺(luo)(luo)釘(ding)(ding)和(he)圓柱頭(tou)(tou)(tou)(tou)螺(luo)(luo)釘(ding)(ding)的(de)釘(ding)(ding)頭(tou)(tou)(tou)(tou)強度較高，瑁(mao)在(zai)普通的(de)部(bu)件連接上;半沉頭(tou)(tou)(tou)(tou)螺(luo)(luo)釘(ding)(ding)的(de)頭(tou)(tou)(tou)(tou)部(bu)呈(cheng)弧形，安裝后(hou)它的(de)頂端略外(wai)露，且美觀光(guang)滑，一(yi)般用(yong)(yong)于儀(yi)器(qi)或精密機械上;沉頭(tou)(tou)(tou)(tou)螺(luo)(luo)釘(ding)(ding)則(ze)用(yong)(yong)于不允許釘(ding)(ding)頭(tou)(tou)(tou)(tou)露出(chu)的(de)地方。

2、內六角及內六角花形螺釘 這類(lei)螺釘的頭(tou)部(bu)能埋入構件中，可施加(jia)較大的扭矩(ju)，連接強度(du)較高，可代替六角螺栓。常用于結構要求緊湊，外觀平滑的聯接處。

3、十(shi)字(zi)槽(cao)普(pu)通(tong)螺釘(ding) 它與(yu)開槽(cao)普(pu)通(tong)螺釘(ding)的使用(yong)功能相(xiang)(xiang)似，可互相(xiang)(xiang)代(dai)換，但(dan)十(shi)字(zi)槽(cao)普(pu)通(tong)螺釘(ding)的槽(cao)形強度(du)較高，不易擰禿，外形較為美觀。使用(yong)時(shi)須用(yong)與(yu)之(zhi)配(pei)套(tao)的十(shi)字(zi)形旋具進行裝卸(xie)。

4、吊環(huan)螺(luo)釘 吊環(huan)螺(luo)釘是供安裝和運輸時承重的(de)一種五金配(pei)件。使用時螺(luo)釘須旋進至使支承面緊密貼合的(de)位置(zhi)，不準使用工(gong)具扳緊，也不允許有垂直于吊環(huan)平面的(de)荷載作用在上面。

5、緊定(ding)(ding)(ding)螺(luo)(luo)(luo)(luo)釘(ding)(ding) 緊定(ding)(ding)(ding)螺(luo)(luo)(luo)(luo)釘(ding)(ding)用(yong)(yong)(yong)于(yu)固(gu)定(ding)(ding)(ding)機(ji)件(jian)(jian)的相對位置(zhi)(zhi)。把(ba)(ba)緊定(ding)(ding)(ding)螺(luo)(luo)(luo)(luo)釘(ding)(ding)旋入待緊定(ding)(ding)(ding)的零(ling)(ling)件(jian)(jian)的螺(luo)(luo)(luo)(luo)孔中，以其末(mo)端(duan)(duan)緊壓在另一(yi)(yi)零(ling)(ling)件(jian)(jian)的表(biao)面上，即把(ba)(ba)前(qian)一(yi)(yi)零(ling)(ling)件(jian)(jian)固(gu)定(ding)(ding)(ding)在后一(yi)(yi)零(ling)(ling)件(jian)(jian)上。 緊定(ding)(ding)(ding)螺(luo)(luo)(luo)(luo)釘(ding)(ding)通常由(you)鋼(gang)或不銹鋼(gang)材料(liao)制(zhi)造，它(ta)的端(duan)(duan)頭(tou)形(xing)(xing)狀(zhuang)有錐形(xing)(xing)、凹(ao)形(xing)(xing)、平(ping)頭(tou)形(xing)(xing)、圓(yuan)(yuan)柱形(xing)(xing)和階梯形(xing)(xing)等。錐端(duan)(duan)或凹(ao)端(duan)(duan)緊定(ding)(ding)(ding)螺(luo)(luo)(luo)(luo)釘(ding)(ding)的端(duan)(duan)頭(tou)直接頂緊零(ling)(ling)件(jian)(jian)，一(yi)(yi)般用(yong)(yong)(yong)于(yu)安(an)裝(zhuang)后不常拆卸處;平(ping)端(duan)(duan)緊定(ding)(ding)(ding)螺(luo)(luo)(luo)(luo)釘(ding)(ding)的端(duan)(duan)頭(tou)平(ping)滑(hua)，頂緊后不損(sun)傷零(ling)(ling)件(jian)(jian)表(biao)面，用(yong)(yong)(yong)于(yu)需(xu)經(jing)(jing)常調節位置(zhi)(zhi)的聯接處，只能(neng)傳(chuan)遞較小(xiao)的荷載;圓(yuan)(yuan)柱端(duan)(duan)緊定(ding)(ding)(ding)螺(luo)(luo)(luo)(luo)部用(yong)(yong)(yong)在需(xu)經(jing)(jing)常調節固(gu)定(ding)(ding)(ding)位置(zhi)(zhi)，它(ta)能(neng)承受較大的荷載作(zuo)用(yong)(yong)(yong)，但防松(song)性(xing)能(neng)差，固(gu)定(ding)(ding)(ding)時需(xu)采取防松(song)措施;階梯肜緊定(ding)(ding)(ding)螺(luo)(luo)(luo)(luo)釘(ding)(ding)適用(yong)(yong)(yong)于(yu)壁厚較大的零(ling)(ling)件(jian)(jian)固(gu)定(ding)(ding)(ding)。

6、自攻(gong)螺釘(ding)(ding) 自攻(gong)螺釘(ding)(ding)用(yong)在被(bei)(bei)聯(lian)接(jie)(jie)件上(shang)時，被(bei)(bei)聯(lian)接(jie)(jie)處可以不(bu)預(yu)先(xian)制(zhi)出(chu)螺紋。在聯(lian)接(jie)(jie)時利用(yong)螺釘(ding)(ding)直接(jie)(jie)攻(gong)出(chu)螺紋。它常用(yong)于聯(lian)接(jie)(jie)厚(hou)度較薄的金屬板。其(qi)品種有錐端(duan)自攻(gong)螺釘(ding)(ding)與平端(duan)自攻(gong)螺釘(ding)(ding)兩種。

7、自攻(gong)鎖緊螺(luo)(luo)釘(ding) 自攻(gong)鎖緊螺(luo)(luo)釘(ding)不僅(jin)具(ju)(ju)有自攻(gong)作用(yong)，而且還具(ju)(ju)有低(di)擰入力矩和高鎖緊的(de)(de)性能。它的(de)(de)螺(luo)(luo)紋(wen)為三(san)角形截面(mian)，螺(luo)(luo)釘(ding)的(de)(de)表面(mian)經過淬硬處理，有較(jiao)高的(de)(de)硬度(du)。它的(de)(de)螺(luo)(luo)紋(wen)規(gui)格有M2～M12