螺絲釘是(shi)由(you)頭部和螺桿兩部分構成的一類常用(yong)緊固(gu)件，主(zhu)要(yao)用(yong)來(lai)連接(jie)固(gu)定零(ling)件，大(da)多是(shi)起到緊固(gu)和便于安裝拆卸(xie)的作用(yong)。隨(sui)著(zhu)螺釘在我們(men)(men)日常生(sheng)活中(zhong)使用(yong)越來(lai)越廣泛，除了對其優點的認同外，人們(men)(men)開始關注(zhu)其分類及(ji)規格型號。

螺絲釘種類：

1、開槽普通螺(luo)釘(ding)(ding)(ding)(ding) 多用(yong)于較小零件(jian)的(de)連(lian)接。它(ta)有盤(pan)頭螺(luo)釘(ding)(ding)(ding)(ding)、圓柱頭螺(luo)釘(ding)(ding)(ding)(ding)、半沉頭螺(luo)釘(ding)(ding)(ding)(ding)和沉頭螺(luo)釘(ding)(ding)(ding)(ding)。盤(pan)頭螺(luo)釘(ding)(ding)(ding)(ding)和圓柱頭螺(luo)釘(ding)(ding)(ding)(ding)的(de)釘(ding)(ding)(ding)(ding)頭強(qiang)度較高，瑁(mao)在普通的(de)部件(jian)連(lian)接上;半沉頭螺(luo)釘(ding)(ding)(ding)(ding)的(de)頭部呈(cheng)弧形，安(an)裝后它(ta)的(de)頂端略外露，且美(mei)觀光滑(hua)，一般用(yong)于儀(yi)器或(huo)精密(mi)機械上;沉頭螺(luo)釘(ding)(ding)(ding)(ding)則用(yong)于不(bu)允許釘(ding)(ding)(ding)(ding)頭露出的(de)地方。

2、內(nei)六(liu)(liu)角(jiao)(jiao)及內(nei)六(liu)(liu)角(jiao)(jiao)花(hua)形螺釘(ding)(ding) 這類(lei)螺釘(ding)(ding)的(de)(de)頭部(bu)能埋入構件中(zhong)，可施加(jia)較(jiao)大(da)的(de)(de)扭矩(ju)，連接強度較(jiao)高，可代替六(liu)(liu)角(jiao)(jiao)螺栓。常用于結構要求緊湊，外(wai)觀平滑的(de)(de)聯接處(chu)。

3、十(shi)字槽普(pu)通螺(luo)釘(ding) 它與(yu)開槽普(pu)通螺(luo)釘(ding)的使(shi)(shi)用(yong)功能相似，可互(hu)相代換，但十(shi)字槽普(pu)通螺(luo)釘(ding)的槽形強度較高，不易擰(ning)禿，外形較為美觀。使(shi)(shi)用(yong)時須用(yong)與(yu)之配套的十(shi)字形旋具進行(xing)裝(zhuang)卸(xie)。

4、吊(diao)環螺(luo)釘(ding)(ding) 吊(diao)環螺(luo)釘(ding)(ding)是供安裝和運輸時承(cheng)重的(de)一種五金配件。使(shi)(shi)用(yong)時螺(luo)釘(ding)(ding)須旋進至(zhi)使(shi)(shi)支承(cheng)面緊(jin)(jin)密貼合(he)的(de)位置，不準使(shi)(shi)用(yong)工(gong)具(ju)扳(ban)緊(jin)(jin)，也不允許(xu)有垂(chui)直于吊(diao)環平面的(de)荷載作用(yong)在上(shang)面。

5、緊(jin)(jin)定(ding)(ding)(ding)(ding)(ding)(ding)(ding)螺(luo)(luo)釘 緊(jin)(jin)定(ding)(ding)(ding)(ding)(ding)(ding)(ding)螺(luo)(luo)釘用(yong)于固定(ding)(ding)(ding)(ding)(ding)(ding)(ding)機件(jian)的(de)相對位置。把緊(jin)(jin)定(ding)(ding)(ding)(ding)(ding)(ding)(ding)螺(luo)(luo)釘旋入(ru)待緊(jin)(jin)定(ding)(ding)(ding)(ding)(ding)(ding)(ding)的(de)零(ling)(ling)件(jian)的(de)螺(luo)(luo)孔中，以其末端(duan)(duan)緊(jin)(jin)壓(ya)在(zai)另一零(ling)(ling)件(jian)的(de)表(biao)面上，即把前一零(ling)(ling)件(jian)固定(ding)(ding)(ding)(ding)(ding)(ding)(ding)在(zai)后(hou)一零(ling)(ling)件(jian)上。 緊(jin)(jin)定(ding)(ding)(ding)(ding)(ding)(ding)(ding)螺(luo)(luo)釘通常(chang)由鋼或不(bu)銹鋼材料(liao)制造，它(ta)的(de)端(duan)(duan)頭(tou)形(xing)狀有錐(zhui)形(xing)、凹(ao)形(xing)、平頭(tou)形(xing)、圓(yuan)柱(zhu)形(xing)和階梯(ti)形(xing)等。錐(zhui)端(duan)(duan)或凹(ao)端(duan)(duan)緊(jin)(jin)定(ding)(ding)(ding)(ding)(ding)(ding)(ding)螺(luo)(luo)釘的(de)端(duan)(duan)頭(tou)直接頂緊(jin)(jin)零(ling)(ling)件(jian)，一般用(yong)于安裝后(hou)不(bu)常(chang)拆卸處(chu);平端(duan)(duan)緊(jin)(jin)定(ding)(ding)(ding)(ding)(ding)(ding)(ding)螺(luo)(luo)釘的(de)端(duan)(duan)頭(tou)平滑(hua)，頂緊(jin)(jin)后(hou)不(bu)損傷零(ling)(ling)件(jian)表(biao)面，用(yong)于需(xu)經常(chang)調(diao)節(jie)位置的(de)聯接處(chu)，只能(neng)傳遞較小(xiao)的(de)荷(he)載;圓(yuan)柱(zhu)端(duan)(duan)緊(jin)(jin)定(ding)(ding)(ding)(ding)(ding)(ding)(ding)螺(luo)(luo)部用(yong)在(zai)需(xu)經常(chang)調(diao)節(jie)固定(ding)(ding)(ding)(ding)(ding)(ding)(ding)位置，它(ta)能(neng)承受(shou)較大(da)的(de)荷(he)載作用(yong)，但防松性能(neng)差，固定(ding)(ding)(ding)(ding)(ding)(ding)(ding)時需(xu)采取防松措施(shi);階梯(ti)肜緊(jin)(jin)定(ding)(ding)(ding)(ding)(ding)(ding)(ding)螺(luo)(luo)釘適用(yong)于壁厚較大(da)的(de)零(ling)(ling)件(jian)固定(ding)(ding)(ding)(ding)(ding)(ding)(ding)。

6、自(zi)攻螺(luo)(luo)釘(ding) 自(zi)攻螺(luo)(luo)釘(ding)用(yong)在被聯接(jie)(jie)件上時，被聯接(jie)(jie)處可以(yi)不預先(xian)制出(chu)螺(luo)(luo)紋。在聯接(jie)(jie)時利用(yong)螺(luo)(luo)釘(ding)直接(jie)(jie)攻出(chu)螺(luo)(luo)紋。它常用(yong)于聯接(jie)(jie)厚度較薄的金屬板(ban)。其品種有(you)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)攻鎖緊螺(luo)釘(ding) 自(zi)攻鎖緊螺(luo)釘(ding)不僅具(ju)有(you)自(zi)攻作用，而且(qie)還(huan)具(ju)有(you)低擰入(ru)力矩和高(gao)鎖緊的(de)性能。它(ta)的(de)螺(luo)紋(wen)為三角形截面，螺(luo)釘(ding)的(de)表面經過(guo)淬硬處理，有(you)較高(gao)的(de)硬度。它(ta)的(de)螺(luo)紋(wen)規格有(you)M2～M12