螺(luo)(luo)絲釘是(shi)由頭(tou)部和螺(luo)(luo)桿兩部分構(gou)成的一類常(chang)用緊(jin)固(gu)件，主(zhu)要用來連接(jie)固(gu)定零(ling)件，大多是(shi)起到緊(jin)固(gu)和便于安(an)裝拆卸的作(zuo)用。隨著(zhu)螺(luo)(luo)釘在(zai)我(wo)們日(ri)常(chang)生活中使用越來越廣泛，除了對其優(you)點的認(ren)同外，人們開始(shi)關注其分類及規格型(xing)號。

螺絲釘種類：

1、開槽普通(tong)螺(luo)(luo)釘(ding)(ding)(ding) 多用(yong)(yong)于較小零件(jian)的(de)連接。它有盤(pan)頭(tou)(tou)(tou)(tou)(tou)螺(luo)(luo)釘(ding)(ding)(ding)、圓(yuan)柱頭(tou)(tou)(tou)(tou)(tou)螺(luo)(luo)釘(ding)(ding)(ding)、半(ban)沉頭(tou)(tou)(tou)(tou)(tou)螺(luo)(luo)釘(ding)(ding)(ding)和沉頭(tou)(tou)(tou)(tou)(tou)螺(luo)(luo)釘(ding)(ding)(ding)。盤(pan)頭(tou)(tou)(tou)(tou)(tou)螺(luo)(luo)釘(ding)(ding)(ding)和圓(yuan)柱頭(tou)(tou)(tou)(tou)(tou)螺(luo)(luo)釘(ding)(ding)(ding)的(de)釘(ding)(ding)(ding)頭(tou)(tou)(tou)(tou)(tou)強度較高，瑁(mao)在普通(tong)的(de)部件(jian)連接上;半(ban)沉頭(tou)(tou)(tou)(tou)(tou)螺(luo)(luo)釘(ding)(ding)(ding)的(de)頭(tou)(tou)(tou)(tou)(tou)部呈弧形，安(an)裝后它的(de)頂端略外(wai)露(lu)，且美觀光滑，一般(ban)用(yong)(yong)于儀器或精密機械(xie)上;沉頭(tou)(tou)(tou)(tou)(tou)螺(luo)(luo)釘(ding)(ding)(ding)則用(yong)(yong)于不允許釘(ding)(ding)(ding)頭(tou)(tou)(tou)(tou)(tou)露(lu)出(chu)的(de)地方(fang)。

2、內六角(jiao)及(ji)內六角(jiao)花形螺釘(ding) 這類螺釘(ding)的(de)頭部能埋入構(gou)件(jian)中，可施加較大的(de)扭矩，連(lian)接強度較高，可代替六角(jiao)螺栓。常用于結構(gou)要求緊(jin)湊，外(wai)觀(guan)平(ping)滑的(de)聯接處。

3、十字槽(cao)普(pu)(pu)通(tong)螺(luo)釘(ding)(ding) 它與開槽(cao)普(pu)(pu)通(tong)螺(luo)釘(ding)(ding)的(de)使(shi)用功(gong)能相(xiang)似，可互相(xiang)代換，但十字槽(cao)普(pu)(pu)通(tong)螺(luo)釘(ding)(ding)的(de)槽(cao)形強度較高，不易擰禿，外形較為美觀(guan)。使(shi)用時(shi)須(xu)用與之配套的(de)十字形旋(xuan)具進行裝(zhuang)卸(xie)。

4、吊環(huan)螺釘(ding)(ding) 吊環(huan)螺釘(ding)(ding)是(shi)供安裝和(he)運輸(shu)時(shi)承重的一種(zhong)五(wu)金配件。使用時(shi)螺釘(ding)(ding)須旋進至(zhi)使支承面(mian)(mian)緊密(mi)貼合的位置，不(bu)準使用工具扳緊，也不(bu)允許有垂(chui)直于(yu)吊環(huan)平面(mian)(mian)的荷載作用在上面(mian)(mian)。

5、緊(jin)(jin)(jin)(jin)(jin)(jin)定(ding)(ding)(ding)螺(luo)(luo)(luo)釘(ding) 緊(jin)(jin)(jin)(jin)(jin)(jin)定(ding)(ding)(ding)螺(luo)(luo)(luo)釘(ding)用(yong)(yong)于固(gu)(gu)定(ding)(ding)(ding)機件(jian)(jian)的(de)(de)(de)(de)相(xiang)對位置。把緊(jin)(jin)(jin)(jin)(jin)(jin)定(ding)(ding)(ding)螺(luo)(luo)(luo)釘(ding)旋入待(dai)緊(jin)(jin)(jin)(jin)(jin)(jin)定(ding)(ding)(ding)的(de)(de)(de)(de)零(ling)件(jian)(jian)的(de)(de)(de)(de)螺(luo)(luo)(luo)孔中，以其末端(duan)(duan)緊(jin)(jin)(jin)(jin)(jin)(jin)壓(ya)在(zai)(zai)另一(yi)零(ling)件(jian)(jian)的(de)(de)(de)(de)表(biao)面上，即把前一(yi)零(ling)件(jian)(jian)固(gu)(gu)定(ding)(ding)(ding)在(zai)(zai)后(hou)一(yi)零(ling)件(jian)(jian)上。 緊(jin)(jin)(jin)(jin)(jin)(jin)定(ding)(ding)(ding)螺(luo)(luo)(luo)釘(ding)通常(chang)(chang)由鋼或不銹鋼材料(liao)制造(zao)，它的(de)(de)(de)(de)端(duan)(duan)頭形(xing)狀有錐形(xing)、凹(ao)(ao)形(xing)、平(ping)頭形(xing)、圓柱形(xing)和階梯形(xing)等。錐端(duan)(duan)或凹(ao)(ao)端(duan)(duan)緊(jin)(jin)(jin)(jin)(jin)(jin)定(ding)(ding)(ding)螺(luo)(luo)(luo)釘(ding)的(de)(de)(de)(de)端(duan)(duan)頭直接頂緊(jin)(jin)(jin)(jin)(jin)(jin)零(ling)件(jian)(jian)，一(yi)般用(yong)(yong)于安裝后(hou)不常(chang)(chang)拆卸處;平(ping)端(duan)(duan)緊(jin)(jin)(jin)(jin)(jin)(jin)定(ding)(ding)(ding)螺(luo)(luo)(luo)釘(ding)的(de)(de)(de)(de)端(duan)(duan)頭平(ping)滑(hua)，頂緊(jin)(jin)(jin)(jin)(jin)(jin)后(hou)不損傷(shang)零(ling)件(jian)(jian)表(biao)面，用(yong)(yong)于需經常(chang)(chang)調節(jie)位置的(de)(de)(de)(de)聯接處，只能傳遞較小的(de)(de)(de)(de)荷載(zai);圓柱端(duan)(duan)緊(jin)(jin)(jin)(jin)(jin)(jin)定(ding)(ding)(ding)螺(luo)(luo)(luo)部用(yong)(yong)在(zai)(zai)需經常(chang)(chang)調節(jie)固(gu)(gu)定(ding)(ding)(ding)位置，它能承(cheng)受(shou)較大的(de)(de)(de)(de)荷載(zai)作用(yong)(yong)，但防(fang)松性能差(cha)，固(gu)(gu)定(ding)(ding)(ding)時需采取防(fang)松措施(shi);階梯肜緊(jin)(jin)(jin)(jin)(jin)(jin)定(ding)(ding)(ding)螺(luo)(luo)(luo)釘(ding)適用(yong)(yong)于壁厚(hou)較大的(de)(de)(de)(de)零(ling)件(jian)(jian)固(gu)(gu)定(ding)(ding)(ding)。

6、自攻螺(luo)(luo)釘(ding)(ding) 自攻螺(luo)(luo)釘(ding)(ding)用(yong)(yong)在(zai)被(bei)聯(lian)(lian)接(jie)件上時(shi)(shi)，被(bei)聯(lian)(lian)接(jie)處(chu)可以不預(yu)先(xian)制出(chu)螺(luo)(luo)紋。在(zai)聯(lian)(lian)接(jie)時(shi)(shi)利用(yong)(yong)螺(luo)(luo)釘(ding)(ding)直接(jie)攻出(chu)螺(luo)(luo)紋。它常用(yong)(yong)于聯(lian)(lian)接(jie)厚度較薄的(de)金屬板。其(qi)品(pin)種有錐端自攻螺(luo)(luo)釘(ding)(ding)與平端自攻螺(luo)(luo)釘(ding)(ding)兩種。

7、自(zi)攻(gong)鎖緊螺釘(ding) 自(zi)攻(gong)鎖緊螺釘(ding)不僅(jin)具有(you)自(zi)攻(gong)作用，而且還(huan)具有(you)低擰入力矩和高鎖緊的性能。它的螺紋為三角形截面，螺釘(ding)的表面經(jing)過(guo)淬硬處理，有(you)較高的硬度(du)。它的螺紋規格有(you)M2～M12