螺(luo)(luo)絲釘是由頭部和螺(luo)(luo)桿兩(liang)部分(fen)構成的(de)一類(lei)常用(yong)緊固(gu)件(jian)，主要用(yong)來連接固(gu)定零件(jian)，大多是起到緊固(gu)和便于安裝拆卸的(de)作用(yong)。隨(sui)著螺(luo)(luo)釘在我(wo)們日常生活中使用(yong)越來越廣泛，除了(le)對(dui)其優點的(de)認同外，人們開始關(guan)注其分(fen)類(lei)及規格型號。

螺絲釘種類：

1、開(kai)槽普通螺(luo)釘(ding)(ding)(ding) 多(duo)用(yong)于(yu)(yu)(yu)較(jiao)小零件(jian)的連接。它有盤頭(tou)(tou)(tou)螺(luo)釘(ding)(ding)(ding)、圓柱頭(tou)(tou)(tou)螺(luo)釘(ding)(ding)(ding)、半沉(chen)頭(tou)(tou)(tou)螺(luo)釘(ding)(ding)(ding)和沉(chen)頭(tou)(tou)(tou)螺(luo)釘(ding)(ding)(ding)。盤頭(tou)(tou)(tou)螺(luo)釘(ding)(ding)(ding)和圓柱頭(tou)(tou)(tou)螺(luo)釘(ding)(ding)(ding)的釘(ding)(ding)(ding)頭(tou)(tou)(tou)強度較(jiao)高，瑁在(zai)普通的部(bu)件(jian)連接上;半沉(chen)頭(tou)(tou)(tou)螺(luo)釘(ding)(ding)(ding)的頭(tou)(tou)(tou)部(bu)呈弧形，安裝后它的頂端略外露，且美觀光滑，一般用(yong)于(yu)(yu)(yu)儀器或精密機械上;沉(chen)頭(tou)(tou)(tou)螺(luo)釘(ding)(ding)(ding)則(ze)用(yong)于(yu)(yu)(yu)不允許釘(ding)(ding)(ding)頭(tou)(tou)(tou)露出的地方。

2、內六(liu)(liu)角(jiao)及(ji)內六(liu)(liu)角(jiao)花形螺(luo)釘 這類螺(luo)釘的頭(tou)部能埋(mai)入(ru)構件中，可施加(jia)較大的扭(niu)矩，連(lian)接強度較高(gao)，可代替六(liu)(liu)角(jiao)螺(luo)栓。常用于結構要求(qiu)緊湊，外(wai)觀(guan)平滑的聯(lian)接處(chu)。

3、十(shi)字槽(cao)普(pu)通螺釘(ding) 它(ta)與開(kai)槽(cao)普(pu)通螺釘(ding)的(de)使(shi)用(yong)功能相(xiang)似，可互相(xiang)代換，但十(shi)字槽(cao)普(pu)通螺釘(ding)的(de)槽(cao)形強(qiang)度(du)較(jiao)高，不易擰禿(tu)，外形較(jiao)為美(mei)觀(guan)。使(shi)用(yong)時須用(yong)與之配套的(de)十(shi)字形旋具進行裝卸(xie)。

4、吊(diao)環螺(luo)(luo)(luo)釘(ding)(ding) 吊(diao)環螺(luo)(luo)(luo)釘(ding)(ding)是(shi)供(gong)安裝和運輸時(shi)承(cheng)重的一種(zhong)五金配件。使用(yong)時(shi)螺(luo)(luo)(luo)釘(ding)(ding)須旋進至使支承(cheng)面緊密貼(tie)合的位置(zhi)，不(bu)準使用(yong)工(gong)具扳緊，也不(bu)允許有垂直于吊(diao)環平(ping)面的荷載(zai)作(zuo)用(yong)在(zai)上(shang)面。

5、緊(jin)(jin)(jin)定(ding)(ding)螺(luo)釘 緊(jin)(jin)(jin)定(ding)(ding)螺(luo)釘用(yong)(yong)(yong)于固(gu)(gu)定(ding)(ding)機(ji)件(jian)(jian)(jian)的相(xiang)對位(wei)(wei)置(zhi)(zhi)。把(ba)緊(jin)(jin)(jin)定(ding)(ding)螺(luo)釘旋入待(dai)緊(jin)(jin)(jin)定(ding)(ding)的零(ling)(ling)(ling)件(jian)(jian)(jian)的螺(luo)孔中，以其(qi)末(mo)端(duan)(duan)緊(jin)(jin)(jin)壓(ya)在(zai)另一零(ling)(ling)(ling)件(jian)(jian)(jian)的表面(mian)上(shang)，即把(ba)前一零(ling)(ling)(ling)件(jian)(jian)(jian)固(gu)(gu)定(ding)(ding)在(zai)后(hou)一零(ling)(ling)(ling)件(jian)(jian)(jian)上(shang)。 緊(jin)(jin)(jin)定(ding)(ding)螺(luo)釘通常(chang)由鋼(gang)或(huo)不銹(xiu)鋼(gang)材料(liao)制造，它的端(duan)(duan)頭(tou)形(xing)狀有錐形(xing)、凹(ao)形(xing)、平頭(tou)形(xing)、圓柱形(xing)和階梯形(xing)等(deng)。錐端(duan)(duan)或(huo)凹(ao)端(duan)(duan)緊(jin)(jin)(jin)定(ding)(ding)螺(luo)釘的端(duan)(duan)頭(tou)直(zhi)接頂緊(jin)(jin)(jin)零(ling)(ling)(ling)件(jian)(jian)(jian)，一般用(yong)(yong)(yong)于安裝后(hou)不常(chang)拆卸處;平端(duan)(duan)緊(jin)(jin)(jin)定(ding)(ding)螺(luo)釘的端(duan)(duan)頭(tou)平滑(hua)，頂緊(jin)(jin)(jin)后(hou)不損(sun)傷零(ling)(ling)(ling)件(jian)(jian)(jian)表面(mian)，用(yong)(yong)(yong)于需(xu)經(jing)常(chang)調節位(wei)(wei)置(zhi)(zhi)的聯接處，只能傳遞較(jiao)小(xiao)的荷載;圓柱端(duan)(duan)緊(jin)(jin)(jin)定(ding)(ding)螺(luo)部用(yong)(yong)(yong)在(zai)需(xu)經(jing)常(chang)調節固(gu)(gu)定(ding)(ding)位(wei)(wei)置(zhi)(zhi)，它能承受較(jiao)大的荷載作用(yong)(yong)(yong)，但(dan)防松性能差，固(gu)(gu)定(ding)(ding)時需(xu)采取(qu)防松措施;階梯肜緊(jin)(jin)(jin)定(ding)(ding)螺(luo)釘適用(yong)(yong)(yong)于壁厚較(jiao)大的零(ling)(ling)(ling)件(jian)(jian)(jian)固(gu)(gu)定(ding)(ding)。

6、自(zi)攻(gong)螺(luo)釘 自(zi)攻(gong)螺(luo)釘用(yong)在被(bei)(bei)聯接(jie)件上(shang)時，被(bei)(bei)聯接(jie)處可以不(bu)預先制出螺(luo)紋。在聯接(jie)時利用(yong)螺(luo)釘直接(jie)攻(gong)出螺(luo)紋。它常(chang)用(yong)于聯接(jie)厚(hou)度較薄(bo)的(de)金屬(shu)板。其品種有錐端自(zi)攻(gong)螺(luo)釘與平端自(zi)攻(gong)螺(luo)釘兩種。

7、自攻鎖緊螺(luo)釘 自攻鎖緊螺(luo)釘不僅具有自攻作(zuo)用(yong)，而且還具有低擰入力矩和高鎖緊的性能。它(ta)(ta)的螺(luo)紋為(wei)三角形截面，螺(luo)釘的表面經(jing)過(guo)淬(cui)硬(ying)(ying)處(chu)理，有較高的硬(ying)(ying)度(du)。它(ta)(ta)的螺(luo)紋規格有M2～M12