螺絲釘(ding)是(shi)由頭(tou)部和(he)螺桿兩部分構成的一類常(chang)用緊固(gu)件(jian)，主要用來連接固(gu)定(ding)零件(jian)，大多(duo)是(shi)起到緊固(gu)和(he)便于(yu)安裝拆卸(xie)的作用。隨(sui)著螺釘(ding)在(zai)我們日常(chang)生活中(zhong)使用越來越廣泛，除了對其(qi)優(you)點的認同外(wai)，人們開始關(guan)注其(qi)分類及規格(ge)型(xing)號。

螺絲釘種類：

1、開(kai)槽普(pu)(pu)通(tong)螺(luo)(luo)(luo)釘(ding) 多用于較(jiao)小零(ling)件(jian)的連接。它有(you)盤頭(tou)(tou)(tou)螺(luo)(luo)(luo)釘(ding)、圓(yuan)柱頭(tou)(tou)(tou)螺(luo)(luo)(luo)釘(ding)、半(ban)(ban)沉(chen)頭(tou)(tou)(tou)螺(luo)(luo)(luo)釘(ding)和沉(chen)頭(tou)(tou)(tou)螺(luo)(luo)(luo)釘(ding)。盤頭(tou)(tou)(tou)螺(luo)(luo)(luo)釘(ding)和圓(yuan)柱頭(tou)(tou)(tou)螺(luo)(luo)(luo)釘(ding)的釘(ding)頭(tou)(tou)(tou)強度較(jiao)高，瑁在普(pu)(pu)通(tong)的部(bu)件(jian)連接上;半(ban)(ban)沉(chen)頭(tou)(tou)(tou)螺(luo)(luo)(luo)釘(ding)的頭(tou)(tou)(tou)部(bu)呈(cheng)弧形，安裝后它的頂端略外露，且美觀(guan)光滑，一般用于儀器或精密機械上;沉(chen)頭(tou)(tou)(tou)螺(luo)(luo)(luo)釘(ding)則用于不允許釘(ding)頭(tou)(tou)(tou)露出的地方。

2、內六角(jiao)及(ji)內六角(jiao)花形螺(luo)釘 這(zhe)類螺(luo)釘的(de)頭部能埋入(ru)構(gou)件中，可施加較(jiao)大的(de)扭(niu)矩，連(lian)接強度(du)較(jiao)高(gao)，可代替六角(jiao)螺(luo)栓。常用于結構(gou)要求緊湊，外觀平滑的(de)聯接處(chu)。

3、十(shi)(shi)字(zi)槽普(pu)通(tong)螺釘(ding) 它與(yu)開槽普(pu)通(tong)螺釘(ding)的使用(yong)功能(neng)相似，可(ke)互相代換，但十(shi)(shi)字(zi)槽普(pu)通(tong)螺釘(ding)的槽形(xing)強(qiang)度較高(gao)，不易(yi)擰禿，外形(xing)較為(wei)美觀。使用(yong)時須用(yong)與(yu)之配套(tao)的十(shi)(shi)字(zi)形(xing)旋具進行裝卸(xie)。

4、吊環(huan)螺(luo)釘(ding)(ding) 吊環(huan)螺(luo)釘(ding)(ding)是供(gong)安裝和(he)運(yun)輸時承重的(de)一種五金配件。使(shi)(shi)用時螺(luo)釘(ding)(ding)須旋進(jin)至使(shi)(shi)支承面緊密貼合的(de)位置，不(bu)準(zhun)使(shi)(shi)用工具扳緊，也(ye)不(bu)允許有垂直于吊環(huan)平面的(de)荷載(zai)作(zuo)用在上(shang)面。

5、緊(jin)定(ding)(ding)(ding)(ding)(ding)螺(luo)釘 緊(jin)定(ding)(ding)(ding)(ding)(ding)螺(luo)釘用(yong)(yong)于固(gu)定(ding)(ding)(ding)(ding)(ding)機件(jian)的(de)(de)相對位置。把(ba)緊(jin)定(ding)(ding)(ding)(ding)(ding)螺(luo)釘旋入待(dai)緊(jin)定(ding)(ding)(ding)(ding)(ding)的(de)(de)零(ling)(ling)(ling)件(jian)的(de)(de)螺(luo)孔中，以(yi)其末(mo)端緊(jin)壓在(zai)另一(yi)(yi)(yi)零(ling)(ling)(ling)件(jian)的(de)(de)表(biao)面上(shang)，即把(ba)前(qian)一(yi)(yi)(yi)零(ling)(ling)(ling)件(jian)固(gu)定(ding)(ding)(ding)(ding)(ding)在(zai)后(hou)一(yi)(yi)(yi)零(ling)(ling)(ling)件(jian)上(shang)。 緊(jin)定(ding)(ding)(ding)(ding)(ding)螺(luo)釘通常由鋼或不銹鋼材料制造，它的(de)(de)端頭形狀有錐形、凹(ao)形、平(ping)(ping)頭形、圓(yuan)柱形和(he)階梯形等。錐端或凹(ao)端緊(jin)定(ding)(ding)(ding)(ding)(ding)螺(luo)釘的(de)(de)端頭直(zhi)接(jie)頂緊(jin)零(ling)(ling)(ling)件(jian)，一(yi)(yi)(yi)般用(yong)(yong)于安裝后(hou)不常拆卸處;平(ping)(ping)端緊(jin)定(ding)(ding)(ding)(ding)(ding)螺(luo)釘的(de)(de)端頭平(ping)(ping)滑，頂緊(jin)后(hou)不損傷零(ling)(ling)(ling)件(jian)表(biao)面，用(yong)(yong)于需經常調節(jie)位置的(de)(de)聯接(jie)處，只(zhi)能傳遞(di)較(jiao)小的(de)(de)荷載;圓(yuan)柱端緊(jin)定(ding)(ding)(ding)(ding)(ding)螺(luo)部(bu)用(yong)(yong)在(zai)需經常調節(jie)固(gu)定(ding)(ding)(ding)(ding)(ding)位置，它能承受(shou)較(jiao)大的(de)(de)荷載作用(yong)(yong)，但防松性能差，固(gu)定(ding)(ding)(ding)(ding)(ding)時需采取防松措(cuo)施;階梯肜緊(jin)定(ding)(ding)(ding)(ding)(ding)螺(luo)釘適用(yong)(yong)于壁厚(hou)較(jiao)大的(de)(de)零(ling)(ling)(ling)件(jian)固(gu)定(ding)(ding)(ding)(ding)(ding)。

6、自攻(gong)(gong)(gong)螺(luo)(luo)釘(ding) 自攻(gong)(gong)(gong)螺(luo)(luo)釘(ding)用(yong)在被聯(lian)接(jie)件上時，被聯(lian)接(jie)處(chu)可以(yi)不預(yu)先(xian)制出(chu)螺(luo)(luo)紋。在聯(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)接(jie)厚度較薄(bo)的金屬板。其品種(zhong)有錐端自攻(gong)(gong)(gong)螺(luo)(luo)釘(ding)與(yu)平端自攻(gong)(gong)(gong)螺(luo)(luo)釘(ding)兩(liang)種(zhong)。

7、自(zi)攻(gong)鎖緊螺釘 自(zi)攻(gong)鎖緊螺釘不(bu)僅具有(you)(you)自(zi)攻(gong)作用，而(er)且還具有(you)(you)低擰(ning)入力矩(ju)和高鎖緊的性(xing)能。它(ta)的螺紋為三(san)角形截面(mian)，螺釘的表面(mian)經過淬硬(ying)處理，有(you)(you)較高的硬(ying)度。它(ta)的螺紋規格有(you)(you)M2～M12