螺(luo)絲釘(ding)是由頭部和螺(luo)桿(gan)兩(liang)部分構成的(de)一類(lei)(lei)常用(yong)緊(jin)固件，主(zhu)要用(yong)來連接固定零件，大多是起到(dao)緊(jin)固和便于安裝拆卸(xie)的(de)作用(yong)。隨著螺(luo)釘(ding)在我們日常生活中使用(yong)越來越廣泛，除了對其(qi)優(you)點的(de)認同外，人(ren)們開(kai)始關注其(qi)分類(lei)(lei)及規格型號。

螺絲釘種類：

1、開槽(cao)普通螺(luo)(luo)釘(ding)(ding)(ding)(ding)(ding)(ding) 多用(yong)于較小零件的連接。它(ta)有盤(pan)頭(tou)螺(luo)(luo)釘(ding)(ding)(ding)(ding)(ding)(ding)、圓柱頭(tou)螺(luo)(luo)釘(ding)(ding)(ding)(ding)(ding)(ding)、半(ban)沉頭(tou)螺(luo)(luo)釘(ding)(ding)(ding)(ding)(ding)(ding)和沉頭(tou)螺(luo)(luo)釘(ding)(ding)(ding)(ding)(ding)(ding)。盤(pan)頭(tou)螺(luo)(luo)釘(ding)(ding)(ding)(ding)(ding)(ding)和圓柱頭(tou)螺(luo)(luo)釘(ding)(ding)(ding)(ding)(ding)(ding)的釘(ding)(ding)(ding)(ding)(ding)(ding)頭(tou)強度較高，瑁在普通的部(bu)件連接上;半(ban)沉頭(tou)螺(luo)(luo)釘(ding)(ding)(ding)(ding)(ding)(ding)的頭(tou)部(bu)呈弧形，安裝后它(ta)的頂端略(lve)外露，且美(mei)觀光滑(hua)，一般用(yong)于儀器或精(jing)密(mi)機械上;沉頭(tou)螺(luo)(luo)釘(ding)(ding)(ding)(ding)(ding)(ding)則用(yong)于不允許釘(ding)(ding)(ding)(ding)(ding)(ding)頭(tou)露出(chu)的地方(fang)。

2、內六角及(ji)內六角花形螺(luo)釘(ding) 這(zhe)類螺(luo)釘(ding)的(de)頭(tou)部能埋入構件中(zhong)，可(ke)施加較(jiao)大的(de)扭矩，連接(jie)(jie)強度較(jiao)高，可(ke)代替六角螺(luo)栓。常用(yong)于結(jie)構要求緊湊，外觀平(ping)滑的(de)聯接(jie)(jie)處(chu)。

3、十(shi)(shi)字(zi)槽普(pu)通(tong)螺釘(ding) 它(ta)與(yu)開槽普(pu)通(tong)螺釘(ding)的(de)使用功(gong)能(neng)相似，可互相代(dai)換，但十(shi)(shi)字(zi)槽普(pu)通(tong)螺釘(ding)的(de)槽形(xing)強度較高(gao)，不易擰(ning)禿，外形(xing)較為美(mei)觀(guan)。使用時須用與(yu)之配(pei)套(tao)的(de)十(shi)(shi)字(zi)形(xing)旋具進行裝卸。

4、吊(diao)環螺釘(ding) 吊(diao)環螺釘(ding)是供安裝和(he)運(yun)輸時承重的一(yi)種(zhong)五(wu)金配(pei)件(jian)。使(shi)用(yong)時螺釘(ding)須(xu)旋進至(zhi)使(shi)支承面(mian)緊密貼(tie)合的位置，不準(zhun)使(shi)用(yong)工具扳緊，也不允許(xu)有垂直于(yu)吊(diao)環平面(mian)的荷載作(zuo)用(yong)在(zai)上(shang)面(mian)。

5、緊(jin)(jin)定(ding)(ding)(ding)螺(luo)(luo)釘(ding) 緊(jin)(jin)定(ding)(ding)(ding)螺(luo)(luo)釘(ding)用(yong)(yong)于(yu)(yu)固定(ding)(ding)(ding)機(ji)件的(de)相對(dui)位置(zhi)(zhi)(zhi)。把緊(jin)(jin)定(ding)(ding)(ding)螺(luo)(luo)釘(ding)旋入待緊(jin)(jin)定(ding)(ding)(ding)的(de)零(ling)件的(de)螺(luo)(luo)孔中，以其末端(duan)(duan)(duan)緊(jin)(jin)壓(ya)在(zai)另一零(ling)件的(de)表面上，即把前一零(ling)件固定(ding)(ding)(ding)在(zai)后一零(ling)件上。 緊(jin)(jin)定(ding)(ding)(ding)螺(luo)(luo)釘(ding)通常由鋼或(huo)不銹鋼材(cai)料制造，它的(de)端(duan)(duan)(duan)頭形(xing)狀(zhuang)有錐(zhui)形(xing)、凹(ao)(ao)形(xing)、平頭形(xing)、圓柱形(xing)和階(jie)梯形(xing)等。錐(zhui)端(duan)(duan)(duan)或(huo)凹(ao)(ao)端(duan)(duan)(duan)緊(jin)(jin)定(ding)(ding)(ding)螺(luo)(luo)釘(ding)的(de)端(duan)(duan)(duan)頭直接(jie)(jie)頂(ding)緊(jin)(jin)零(ling)件，一般(ban)用(yong)(yong)于(yu)(yu)安裝后不常拆卸處;平端(duan)(duan)(duan)緊(jin)(jin)定(ding)(ding)(ding)螺(luo)(luo)釘(ding)的(de)端(duan)(duan)(duan)頭平滑，頂(ding)緊(jin)(jin)后不損傷零(ling)件表面，用(yong)(yong)于(yu)(yu)需(xu)經(jing)常調節位置(zhi)(zhi)(zhi)的(de)聯接(jie)(jie)處，只能(neng)(neng)傳遞較(jiao)小的(de)荷載(zai);圓柱端(duan)(duan)(duan)緊(jin)(jin)定(ding)(ding)(ding)螺(luo)(luo)部用(yong)(yong)在(zai)需(xu)經(jing)常調節固定(ding)(ding)(ding)位置(zhi)(zhi)(zhi)，它能(neng)(neng)承(cheng)受較(jiao)大的(de)荷載(zai)作(zuo)用(yong)(yong)，但防(fang)松(song)性能(neng)(neng)差，固定(ding)(ding)(ding)時需(xu)采取防(fang)松(song)措施;階(jie)梯肜緊(jin)(jin)定(ding)(ding)(ding)螺(luo)(luo)釘(ding)適用(yong)(yong)于(yu)(yu)壁厚較(jiao)大的(de)零(ling)件固定(ding)(ding)(ding)。

6、自攻(gong)(gong)螺(luo)釘(ding)(ding) 自攻(gong)(gong)螺(luo)釘(ding)(ding)用(yong)在(zai)被聯(lian)接(jie)(jie)件上時，被聯(lian)接(jie)(jie)處可以(yi)不預先制出(chu)螺(luo)紋。在(zai)聯(lian)接(jie)(jie)時利用(yong)螺(luo)釘(ding)(ding)直接(jie)(jie)攻(gong)(gong)出(chu)螺(luo)紋。它常用(yong)于(yu)聯(lian)接(jie)(jie)厚度較薄的金屬板。其品種(zhong)(zhong)有錐端自攻(gong)(gong)螺(luo)釘(ding)(ding)與平端自攻(gong)(gong)螺(luo)釘(ding)(ding)兩種(zhong)(zhong)。

7、自攻(gong)(gong)鎖(suo)緊(jin)螺釘(ding)(ding) 自攻(gong)(gong)鎖(suo)緊(jin)螺釘(ding)(ding)不僅(jin)具(ju)有自攻(gong)(gong)作用，而且還具(ju)有低擰入力矩和(he)高鎖(suo)緊(jin)的性能。它的螺紋(wen)(wen)為三(san)角形截面，螺釘(ding)(ding)的表面經過淬硬處理(li)，有較高的硬度。它的螺紋(wen)(wen)規(gui)格有M2～M12