螺(luo)絲釘是由頭部和螺(luo)桿兩(liang)部分構成的(de)(de)一(yi)類常用(yong)緊(jin)固件，主要用(yong)來連接固定零件，大(da)多(duo)是起到緊(jin)固和便于安(an)裝拆(chai)卸(xie)的(de)(de)作用(yong)。隨著螺(luo)釘在我們(men)日常生活中使用(yong)越來越廣(guang)泛，除(chu)了對其優點(dian)的(de)(de)認(ren)同外，人(ren)們(men)開始(shi)關注(zhu)其分類及規格型(xing)號。

螺絲釘種類：

1、開(kai)槽普通(tong)螺(luo)釘(ding)(ding) 多用于較小零件(jian)的(de)連接(jie)。它有盤(pan)頭(tou)(tou)(tou)(tou)螺(luo)釘(ding)(ding)、圓(yuan)(yuan)柱頭(tou)(tou)(tou)(tou)螺(luo)釘(ding)(ding)、半(ban)沉頭(tou)(tou)(tou)(tou)螺(luo)釘(ding)(ding)和沉頭(tou)(tou)(tou)(tou)螺(luo)釘(ding)(ding)。盤(pan)頭(tou)(tou)(tou)(tou)螺(luo)釘(ding)(ding)和圓(yuan)(yuan)柱頭(tou)(tou)(tou)(tou)螺(luo)釘(ding)(ding)的(de)釘(ding)(ding)頭(tou)(tou)(tou)(tou)強度較高，瑁在普通(tong)的(de)部件(jian)連接(jie)上;半(ban)沉頭(tou)(tou)(tou)(tou)螺(luo)釘(ding)(ding)的(de)頭(tou)(tou)(tou)(tou)部呈(cheng)弧形，安裝后(hou)它的(de)頂端略外露，且(qie)美觀光滑，一般(ban)用于儀器(qi)或精密機械上;沉頭(tou)(tou)(tou)(tou)螺(luo)釘(ding)(ding)則用于不允許釘(ding)(ding)頭(tou)(tou)(tou)(tou)露出的(de)地方。

2、內(nei)(nei)六(liu)(liu)角(jiao)及內(nei)(nei)六(liu)(liu)角(jiao)花形螺釘 這類螺釘的(de)頭(tou)部能埋入構件中(zhong)，可施加較(jiao)大的(de)扭矩，連接強度較(jiao)高，可代替六(liu)(liu)角(jiao)螺栓(shuan)。常用于結(jie)構要求緊(jin)湊，外(wai)觀平滑的(de)聯接處(chu)。

3、十字(zi)槽普通(tong)螺釘 它與開(kai)槽普通(tong)螺釘的(de)使(shi)用功能相(xiang)似(si)，可互(hu)相(xiang)代換，但十字(zi)槽普通(tong)螺釘的(de)槽形(xing)強度較高，不易擰禿，外形(xing)較為美觀。使(shi)用時須用與之配(pei)套的(de)十字(zi)形(xing)旋具進行(xing)裝卸。

4、吊環螺(luo)釘(ding)(ding) 吊環螺(luo)釘(ding)(ding)是供安(an)裝和運輸時承重的一種五金配件。使用(yong)時螺(luo)釘(ding)(ding)須旋進(jin)至使支承面緊(jin)密(mi)貼合(he)的位置，不(bu)準(zhun)使用(yong)工具扳緊(jin)，也不(bu)允許有垂直(zhi)于(yu)吊環平面的荷載作用(yong)在(zai)上面。

5、緊(jin)(jin)定(ding)(ding)(ding)(ding)(ding)螺(luo)(luo)釘(ding)(ding) 緊(jin)(jin)定(ding)(ding)(ding)(ding)(ding)螺(luo)(luo)釘(ding)(ding)用(yong)于固定(ding)(ding)(ding)(ding)(ding)機件(jian)(jian)(jian)的(de)(de)(de)(de)相對位置(zhi)(zhi)。把緊(jin)(jin)定(ding)(ding)(ding)(ding)(ding)螺(luo)(luo)釘(ding)(ding)旋入待緊(jin)(jin)定(ding)(ding)(ding)(ding)(ding)的(de)(de)(de)(de)零(ling)(ling)(ling)件(jian)(jian)(jian)的(de)(de)(de)(de)螺(luo)(luo)孔(kong)中，以其末端(duan)(duan)(duan)緊(jin)(jin)壓在另一(yi)零(ling)(ling)(ling)件(jian)(jian)(jian)的(de)(de)(de)(de)表面上(shang)，即把前一(yi)零(ling)(ling)(ling)件(jian)(jian)(jian)固定(ding)(ding)(ding)(ding)(ding)在后一(yi)零(ling)(ling)(ling)件(jian)(jian)(jian)上(shang)。 緊(jin)(jin)定(ding)(ding)(ding)(ding)(ding)螺(luo)(luo)釘(ding)(ding)通常由鋼或(huo)不(bu)銹(xiu)鋼材料制造，它(ta)的(de)(de)(de)(de)端(duan)(duan)(duan)頭形(xing)(xing)狀有錐形(xing)(xing)、凹形(xing)(xing)、平(ping)頭形(xing)(xing)、圓(yuan)柱形(xing)(xing)和階(jie)梯(ti)形(xing)(xing)等。錐端(duan)(duan)(duan)或(huo)凹端(duan)(duan)(duan)緊(jin)(jin)定(ding)(ding)(ding)(ding)(ding)螺(luo)(luo)釘(ding)(ding)的(de)(de)(de)(de)端(duan)(duan)(duan)頭直接頂(ding)緊(jin)(jin)零(ling)(ling)(ling)件(jian)(jian)(jian)，一(yi)般用(yong)于安裝后不(bu)常拆卸處;平(ping)端(duan)(duan)(duan)緊(jin)(jin)定(ding)(ding)(ding)(ding)(ding)螺(luo)(luo)釘(ding)(ding)的(de)(de)(de)(de)端(duan)(duan)(duan)頭平(ping)滑，頂(ding)緊(jin)(jin)后不(bu)損傷零(ling)(ling)(ling)件(jian)(jian)(jian)表面，用(yong)于需經常調節(jie)位置(zhi)(zhi)的(de)(de)(de)(de)聯(lian)接處，只能(neng)傳(chuan)遞較(jiao)小(xiao)的(de)(de)(de)(de)荷載(zai);圓(yuan)柱端(duan)(duan)(duan)緊(jin)(jin)定(ding)(ding)(ding)(ding)(ding)螺(luo)(luo)部用(yong)在需經常調節(jie)固定(ding)(ding)(ding)(ding)(ding)位置(zhi)(zhi)，它(ta)能(neng)承受較(jiao)大(da)的(de)(de)(de)(de)荷載(zai)作用(yong)，但防松性能(neng)差，固定(ding)(ding)(ding)(ding)(ding)時需采取防松措施;階(jie)梯(ti)肜緊(jin)(jin)定(ding)(ding)(ding)(ding)(ding)螺(luo)(luo)釘(ding)(ding)適(shi)用(yong)于壁厚較(jiao)大(da)的(de)(de)(de)(de)零(ling)(ling)(ling)件(jian)(jian)(jian)固定(ding)(ding)(ding)(ding)(ding)。

6、自(zi)攻螺(luo)(luo)釘(ding) 自(zi)攻螺(luo)(luo)釘(ding)用在(zai)被聯(lian)接(jie)件(jian)上時，被聯(lian)接(jie)處可(ke)以不預先制(zhi)出螺(luo)(luo)紋。在(zai)聯(lian)接(jie)時利用螺(luo)(luo)釘(ding)直接(jie)攻出螺(luo)(luo)紋。它常(chang)用于聯(lian)接(jie)厚度較(jiao)薄(bo)的金(jin)屬板。其品種有錐端自(zi)攻螺(luo)(luo)釘(ding)與平端自(zi)攻螺(luo)(luo)釘(ding)兩種。

7、自(zi)攻(gong)(gong)鎖緊(jin)螺(luo)(luo)釘 自(zi)攻(gong)(gong)鎖緊(jin)螺(luo)(luo)釘不僅具有(you)自(zi)攻(gong)(gong)作用，而且(qie)還具有(you)低擰入力矩和高鎖緊(jin)的性能(neng)。它的螺(luo)(luo)紋(wen)為三角形截面，螺(luo)(luo)釘的表面經過淬硬處理，有(you)較高的硬度(du)。它的螺(luo)(luo)紋(wen)規格有(you)M2～M12