螺(luo)(luo)絲(si)釘是由(you)頭部(bu)和螺(luo)(luo)桿(gan)兩部(bu)分構(gou)成的(de)一類常用(yong)緊(jin)固(gu)件，主要(yao)用(yong)來連接固(gu)定(ding)零件，大多是起到緊(jin)固(gu)和便于(yu)安裝(zhuang)拆卸的(de)作用(yong)。隨(sui)著(zhu)螺(luo)(luo)釘在我們(men)日常生活中使用(yong)越(yue)來越(yue)廣(guang)泛，除了對(dui)其優點的(de)認(ren)同外，人(ren)們(men)開始關注其分類及規格型(xing)號(hao)。

螺絲釘種類：

1、開(kai)槽普通螺(luo)(luo)釘(ding)(ding)(ding) 多用(yong)于(yu)較(jiao)小零件(jian)(jian)的(de)連接。它(ta)有盤頭(tou)(tou)螺(luo)(luo)釘(ding)(ding)(ding)、圓柱頭(tou)(tou)螺(luo)(luo)釘(ding)(ding)(ding)、半(ban)沉頭(tou)(tou)螺(luo)(luo)釘(ding)(ding)(ding)和(he)沉頭(tou)(tou)螺(luo)(luo)釘(ding)(ding)(ding)。盤頭(tou)(tou)螺(luo)(luo)釘(ding)(ding)(ding)和(he)圓柱頭(tou)(tou)螺(luo)(luo)釘(ding)(ding)(ding)的(de)釘(ding)(ding)(ding)頭(tou)(tou)強度較(jiao)高，瑁在普通的(de)部件(jian)(jian)連接上;半(ban)沉頭(tou)(tou)螺(luo)(luo)釘(ding)(ding)(ding)的(de)頭(tou)(tou)部呈弧形，安裝后它(ta)的(de)頂端略外(wai)露，且(qie)美(mei)觀光滑，一(yi)般(ban)用(yong)于(yu)儀器或精密機械上;沉頭(tou)(tou)螺(luo)(luo)釘(ding)(ding)(ding)則用(yong)于(yu)不允許(xu)釘(ding)(ding)(ding)頭(tou)(tou)露出的(de)地方。

2、內六角及內六角花(hua)形螺(luo)(luo)(luo)釘 這類螺(luo)(luo)(luo)釘的(de)頭部能埋入構(gou)件中，可(ke)(ke)施(shi)加較(jiao)大的(de)扭矩，連接強度較(jiao)高，可(ke)(ke)代替六角螺(luo)(luo)(luo)栓。常用(yong)于(yu)結構(gou)要求(qiu)緊湊，外觀平滑的(de)聯接處。

3、十(shi)字槽(cao)(cao)普(pu)通(tong)螺釘 它與開槽(cao)(cao)普(pu)通(tong)螺釘的使(shi)用(yong)功能相似，可互相代換，但十(shi)字槽(cao)(cao)普(pu)通(tong)螺釘的槽(cao)(cao)形強度較(jiao)高(gao)，不(bu)易擰(ning)禿，外形較(jiao)為美觀。使(shi)用(yong)時須用(yong)與之配(pei)套的十(shi)字形旋(xuan)具進行裝(zhuang)卸。

4、吊環螺(luo)(luo)釘(ding) 吊環螺(luo)(luo)釘(ding)是供安裝和運(yun)輸時(shi)承重(zhong)的(de)一種五金(jin)配件。使用(yong)時(shi)螺(luo)(luo)釘(ding)須旋進至使支承面(mian)緊密(mi)貼合的(de)位置，不準(zhun)使用(yong)工具扳緊，也不允許有垂直于吊環平(ping)面(mian)的(de)荷(he)載作用(yong)在上面(mian)。

5、緊(jin)(jin)定(ding)(ding)(ding)螺(luo)(luo)釘(ding)(ding) 緊(jin)(jin)定(ding)(ding)(ding)螺(luo)(luo)釘(ding)(ding)用(yong)(yong)于固(gu)定(ding)(ding)(ding)機件(jian)(jian)的(de)(de)相對位(wei)置。把緊(jin)(jin)定(ding)(ding)(ding)螺(luo)(luo)釘(ding)(ding)旋入待(dai)緊(jin)(jin)定(ding)(ding)(ding)的(de)(de)零(ling)(ling)件(jian)(jian)的(de)(de)螺(luo)(luo)孔中，以其末端(duan)(duan)(duan)(duan)緊(jin)(jin)壓在(zai)另(ling)一(yi)零(ling)(ling)件(jian)(jian)的(de)(de)表(biao)面(mian)上，即(ji)把前一(yi)零(ling)(ling)件(jian)(jian)固(gu)定(ding)(ding)(ding)在(zai)后(hou)一(yi)零(ling)(ling)件(jian)(jian)上。 緊(jin)(jin)定(ding)(ding)(ding)螺(luo)(luo)釘(ding)(ding)通(tong)常(chang)(chang)由鋼(gang)或(huo)不(bu)銹鋼(gang)材料制造，它(ta)的(de)(de)端(duan)(duan)(duan)(duan)頭形(xing)(xing)狀(zhuang)有錐形(xing)(xing)、凹形(xing)(xing)、平頭形(xing)(xing)、圓柱(zhu)形(xing)(xing)和階梯形(xing)(xing)等。錐端(duan)(duan)(duan)(duan)或(huo)凹端(duan)(duan)(duan)(duan)緊(jin)(jin)定(ding)(ding)(ding)螺(luo)(luo)釘(ding)(ding)的(de)(de)端(duan)(duan)(duan)(duan)頭直(zhi)接頂(ding)緊(jin)(jin)零(ling)(ling)件(jian)(jian)，一(yi)般用(yong)(yong)于安裝(zhuang)后(hou)不(bu)常(chang)(chang)拆卸(xie)處;平端(duan)(duan)(duan)(duan)緊(jin)(jin)定(ding)(ding)(ding)螺(luo)(luo)釘(ding)(ding)的(de)(de)端(duan)(duan)(duan)(duan)頭平滑，頂(ding)緊(jin)(jin)后(hou)不(bu)損傷零(ling)(ling)件(jian)(jian)表(biao)面(mian)，用(yong)(yong)于需(xu)(xu)經(jing)常(chang)(chang)調節(jie)(jie)位(wei)置的(de)(de)聯(lian)接處，只(zhi)能(neng)傳遞較小的(de)(de)荷(he)載(zai)(zai);圓柱(zhu)端(duan)(duan)(duan)(duan)緊(jin)(jin)定(ding)(ding)(ding)螺(luo)(luo)部用(yong)(yong)在(zai)需(xu)(xu)經(jing)常(chang)(chang)調節(jie)(jie)固(gu)定(ding)(ding)(ding)位(wei)置，它(ta)能(neng)承受較大的(de)(de)荷(he)載(zai)(zai)作用(yong)(yong)，但(dan)防松(song)性(xing)能(neng)差(cha)，固(gu)定(ding)(ding)(ding)時需(xu)(xu)采(cai)取(qu)防松(song)措施;階梯肜緊(jin)(jin)定(ding)(ding)(ding)螺(luo)(luo)釘(ding)(ding)適用(yong)(yong)于壁厚較大的(de)(de)零(ling)(ling)件(jian)(jian)固(gu)定(ding)(ding)(ding)。

6、自(zi)攻(gong)(gong)螺(luo)釘(ding) 自(zi)攻(gong)(gong)螺(luo)釘(ding)用在被聯(lian)接(jie)件(jian)上時(shi)，被聯(lian)接(jie)處可(ke)以不預先制(zhi)出螺(luo)紋。在聯(lian)接(jie)時(shi)利用螺(luo)釘(ding)直接(jie)攻(gong)(gong)出螺(luo)紋。它常用于聯(lian)接(jie)厚度較薄的(de)金屬板。其(qi)品(pin)種(zhong)有錐端自(zi)攻(gong)(gong)螺(luo)釘(ding)與平端自(zi)攻(gong)(gong)螺(luo)釘(ding)兩種(zhong)。

7、自(zi)攻鎖緊(jin)螺(luo)釘(ding) 自(zi)攻鎖緊(jin)螺(luo)釘(ding)不僅具有(you)自(zi)攻作用，而且還具有(you)低擰入力矩(ju)和高鎖緊(jin)的性能。它的螺(luo)紋(wen)為三角形截面，螺(luo)釘(ding)的表面經(jing)過淬硬處理，有(you)較高的硬度(du)。它的螺(luo)紋(wen)規(gui)格有(you)M2～M12