螺(luo)絲釘是(shi)由頭部(bu)和(he)螺(luo)桿兩部(bu)分(fen)構成的(de)一類(lei)常用(yong)緊固(gu)件，主要用(yong)來連接固(gu)定零件，大多是(shi)起到緊固(gu)和(he)便于(yu)安裝拆卸的(de)作用(yong)。隨著螺(luo)釘在我們日(ri)常生(sheng)活中使(shi)用(yong)越(yue)來越(yue)廣(guang)泛，除了對其優(you)點的(de)認(ren)同外，人們開(kai)始關(guan)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)(ding) 多用于(yu)較小零件的(de)(de)連(lian)接。它有盤(pan)頭(tou)(tou)(tou)螺(luo)(luo)釘(ding)(ding)(ding)、圓柱頭(tou)(tou)(tou)螺(luo)(luo)釘(ding)(ding)(ding)、半沉頭(tou)(tou)(tou)螺(luo)(luo)釘(ding)(ding)(ding)和沉頭(tou)(tou)(tou)螺(luo)(luo)釘(ding)(ding)(ding)。盤(pan)頭(tou)(tou)(tou)螺(luo)(luo)釘(ding)(ding)(ding)和圓柱頭(tou)(tou)(tou)螺(luo)(luo)釘(ding)(ding)(ding)的(de)(de)釘(ding)(ding)(ding)頭(tou)(tou)(tou)強(qiang)度(du)較高(gao)，瑁(mao)在普通的(de)(de)部(bu)件連(lian)接上;半沉頭(tou)(tou)(tou)螺(luo)(luo)釘(ding)(ding)(ding)的(de)(de)頭(tou)(tou)(tou)部(bu)呈弧形，安(an)裝后它的(de)(de)頂端略外露(lu)，且(qie)美觀光滑，一般用于(yu)儀器或精密機械上;沉頭(tou)(tou)(tou)螺(luo)(luo)釘(ding)(ding)(ding)則用于(yu)不允許釘(ding)(ding)(ding)頭(tou)(tou)(tou)露(lu)出的(de)(de)地方。

2、內(nei)六(liu)角(jiao)及(ji)內(nei)六(liu)角(jiao)花形螺(luo)釘 這(zhe)類螺(luo)釘的頭部能埋入構件中，可施加較(jiao)大的扭矩，連接(jie)(jie)強度較(jiao)高，可代替六(liu)角(jiao)螺(luo)栓(shuan)。常用于(yu)結構要求緊湊，外觀平滑的聯接(jie)(jie)處(chu)。

3、十字槽(cao)普(pu)通(tong)螺釘(ding) 它與開槽(cao)普(pu)通(tong)螺釘(ding)的使用功能相(xiang)似，可(ke)互(hu)相(xiang)代換，但十字槽(cao)普(pu)通(tong)螺釘(ding)的槽(cao)形強度較(jiao)高，不易(yi)擰禿(tu)，外形較(jiao)為美觀。使用時須用與之(zhi)配套的十字形旋具進行裝卸。

4、吊(diao)環螺(luo)釘 吊(diao)環螺(luo)釘是供安裝(zhuang)和運(yun)輸時承重的(de)一種(zhong)五金配件。使(shi)用時螺(luo)釘須旋進至使(shi)支(zhi)承面(mian)緊密貼合(he)的(de)位置，不(bu)(bu)準使(shi)用工具扳緊，也不(bu)(bu)允許有垂直于吊(diao)環平面(mian)的(de)荷載作(zuo)用在上(shang)面(mian)。

5、緊(jin)(jin)定(ding)(ding)(ding)(ding)螺(luo)(luo)釘(ding)(ding) 緊(jin)(jin)定(ding)(ding)(ding)(ding)螺(luo)(luo)釘(ding)(ding)用(yong)(yong)(yong)于(yu)(yu)固(gu)(gu)定(ding)(ding)(ding)(ding)機件的(de)相對位置。把緊(jin)(jin)定(ding)(ding)(ding)(ding)螺(luo)(luo)釘(ding)(ding)旋入待(dai)緊(jin)(jin)定(ding)(ding)(ding)(ding)的(de)零(ling)(ling)件的(de)螺(luo)(luo)孔(kong)中，以(yi)其末端(duan)(duan)(duan)緊(jin)(jin)壓在(zai)(zai)另一(yi)零(ling)(ling)件的(de)表(biao)面上，即把前一(yi)零(ling)(ling)件固(gu)(gu)定(ding)(ding)(ding)(ding)在(zai)(zai)后一(yi)零(ling)(ling)件上。 緊(jin)(jin)定(ding)(ding)(ding)(ding)螺(luo)(luo)釘(ding)(ding)通常由鋼(gang)或不(bu)(bu)銹鋼(gang)材料制造，它的(de)端(duan)(duan)(duan)頭(tou)形(xing)(xing)狀有錐形(xing)(xing)、凹形(xing)(xing)、平頭(tou)形(xing)(xing)、圓(yuan)柱形(xing)(xing)和階(jie)梯(ti)形(xing)(xing)等(deng)。錐端(duan)(duan)(duan)或凹端(duan)(duan)(duan)緊(jin)(jin)定(ding)(ding)(ding)(ding)螺(luo)(luo)釘(ding)(ding)的(de)端(duan)(duan)(duan)頭(tou)直接頂(ding)緊(jin)(jin)零(ling)(ling)件，一(yi)般用(yong)(yong)(yong)于(yu)(yu)安裝(zhuang)后不(bu)(bu)常拆卸處;平端(duan)(duan)(duan)緊(jin)(jin)定(ding)(ding)(ding)(ding)螺(luo)(luo)釘(ding)(ding)的(de)端(duan)(duan)(duan)頭(tou)平滑，頂(ding)緊(jin)(jin)后不(bu)(bu)損傷零(ling)(ling)件表(biao)面，用(yong)(yong)(yong)于(yu)(yu)需經常調節位置的(de)聯接處，只能(neng)傳遞較小的(de)荷載;圓(yuan)柱端(duan)(duan)(duan)緊(jin)(jin)定(ding)(ding)(ding)(ding)螺(luo)(luo)部(bu)用(yong)(yong)(yong)在(zai)(zai)需經常調節固(gu)(gu)定(ding)(ding)(ding)(ding)位置，它能(neng)承受較大的(de)荷載作用(yong)(yong)(yong)，但防(fang)(fang)松性能(neng)差，固(gu)(gu)定(ding)(ding)(ding)(ding)時需采取防(fang)(fang)松措施(shi);階(jie)梯(ti)肜(rong)緊(jin)(jin)定(ding)(ding)(ding)(ding)螺(luo)(luo)釘(ding)(ding)適用(yong)(yong)(yong)于(yu)(yu)壁(bi)厚(hou)較大的(de)零(ling)(ling)件固(gu)(gu)定(ding)(ding)(ding)(ding)。

6、自攻(gong)(gong)螺(luo)釘(ding) 自攻(gong)(gong)螺(luo)釘(ding)用(yong)(yong)在被聯接(jie)件上時，被聯接(jie)處可以不預(yu)先制出(chu)(chu)螺(luo)紋(wen)。在聯接(jie)時利用(yong)(yong)螺(luo)釘(ding)直接(jie)攻(gong)(gong)出(chu)(chu)螺(luo)紋(wen)。它常(chang)用(yong)(yong)于聯接(jie)厚度較薄的金屬板。其品種有(you)錐端自攻(gong)(gong)螺(luo)釘(ding)與平端自攻(gong)(gong)螺(luo)釘(ding)兩(liang)種。

7、自(zi)攻鎖緊螺(luo)(luo)釘 自(zi)攻鎖緊螺(luo)(luo)釘不(bu)僅具有自(zi)攻作用，而且還具有低(di)擰入(ru)力(li)矩和(he)高鎖緊的性能。它的螺(luo)(luo)紋為(wei)三角形截面(mian)，螺(luo)(luo)釘的表面(mian)經(jing)過淬硬處理(li)，有較高的硬度。它的螺(luo)(luo)紋規(gui)格有M2～M12