螺(luo)絲釘是(shi)由頭部和螺(luo)桿(gan)兩部分構成(cheng)的一類(lei)常用(yong)緊固(gu)件(jian)，主(zhu)要用(yong)來連接(jie)固(gu)定零件(jian)，大多是(shi)起到(dao)緊固(gu)和便于安裝拆卸的作用(yong)。隨著螺(luo)釘在我們日常生活中使用(yong)越來越廣泛，除(chu)了(le)對其優點的認同外，人們開始關注其分類(lei)及規格型(xing)號。

螺絲釘種類：

1、開槽普通螺(luo)(luo)釘(ding)(ding)(ding) 多用(yong)于較小零(ling)件的(de)連接。它(ta)有盤頭(tou)(tou)(tou)螺(luo)(luo)釘(ding)(ding)(ding)、圓柱(zhu)頭(tou)(tou)(tou)螺(luo)(luo)釘(ding)(ding)(ding)、半沉頭(tou)(tou)(tou)螺(luo)(luo)釘(ding)(ding)(ding)和(he)沉頭(tou)(tou)(tou)螺(luo)(luo)釘(ding)(ding)(ding)。盤頭(tou)(tou)(tou)螺(luo)(luo)釘(ding)(ding)(ding)和(he)圓柱(zhu)頭(tou)(tou)(tou)螺(luo)(luo)釘(ding)(ding)(ding)的(de)釘(ding)(ding)(ding)頭(tou)(tou)(tou)強度較高(gao)，瑁(mao)在普通的(de)部件連接上(shang);半沉頭(tou)(tou)(tou)螺(luo)(luo)釘(ding)(ding)(ding)的(de)頭(tou)(tou)(tou)部呈弧(hu)形(xing)，安裝后它(ta)的(de)頂端略外露(lu)，且美觀(guan)光(guang)滑，一般用(yong)于儀器或精密(mi)機械上(shang);沉頭(tou)(tou)(tou)螺(luo)(luo)釘(ding)(ding)(ding)則用(yong)于不允(yun)許(xu)釘(ding)(ding)(ding)頭(tou)(tou)(tou)露(lu)出的(de)地方。

2、內六角(jiao)(jiao)及內六角(jiao)(jiao)花形(xing)螺釘 這(zhe)類螺釘的頭部能埋入構(gou)件(jian)中(zhong)，可施加較(jiao)大(da)的扭矩(ju)，連(lian)接強度較(jiao)高(gao)，可代替六角(jiao)(jiao)螺栓。常用(yong)于結(jie)構(gou)要求(qiu)緊湊(cou)，外觀平滑的聯接處。

3、十(shi)字槽普(pu)通螺(luo)(luo)釘 它與開槽普(pu)通螺(luo)(luo)釘的(de)使(shi)用功能相似，可互相代換，但十(shi)字槽普(pu)通螺(luo)(luo)釘的(de)槽形強度較(jiao)高，不易擰禿，外(wai)形較(jiao)為美觀。使(shi)用時須(xu)用與之配套(tao)的(de)十(shi)字形旋(xuan)具進行裝卸。

4、吊環(huan)螺釘(ding) 吊環(huan)螺釘(ding)是供安(an)裝和運輸(shu)時承(cheng)重的一(yi)種五金配件。使(shi)(shi)用(yong)時螺釘(ding)須旋進至使(shi)(shi)支承(cheng)面(mian)緊(jin)密貼合的位(wei)置，不準使(shi)(shi)用(yong)工具扳(ban)緊(jin)，也不允(yun)許(xu)有垂(chui)直(zhi)于吊環(huan)平面(mian)的荷載(zai)作用(yong)在上面(mian)。

5、緊(jin)(jin)(jin)(jin)(jin)定(ding)(ding)(ding)螺(luo)釘(ding)(ding) 緊(jin)(jin)(jin)(jin)(jin)定(ding)(ding)(ding)螺(luo)釘(ding)(ding)用(yong)(yong)于固(gu)定(ding)(ding)(ding)機(ji)件(jian)(jian)的(de)(de)(de)(de)相對(dui)位置(zhi)。把緊(jin)(jin)(jin)(jin)(jin)定(ding)(ding)(ding)螺(luo)釘(ding)(ding)旋入待緊(jin)(jin)(jin)(jin)(jin)定(ding)(ding)(ding)的(de)(de)(de)(de)零(ling)(ling)件(jian)(jian)的(de)(de)(de)(de)螺(luo)孔中(zhong)，以其(qi)末端(duan)(duan)緊(jin)(jin)(jin)(jin)(jin)壓在(zai)另一(yi)零(ling)(ling)件(jian)(jian)的(de)(de)(de)(de)表面上(shang)，即把前一(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(shang)。 緊(jin)(jin)(jin)(jin)(jin)定(ding)(ding)(ding)螺(luo)釘(ding)(ding)通常(chang)由(you)鋼(gang)或不銹鋼(gang)材料制造(zao)，它的(de)(de)(de)(de)端(duan)(duan)頭形狀有錐形、凹(ao)形、平頭形、圓柱(zhu)形和階梯形等。錐端(duan)(duan)或凹(ao)端(duan)(duan)緊(jin)(jin)(jin)(jin)(jin)定(ding)(ding)(ding)螺(luo)釘(ding)(ding)的(de)(de)(de)(de)端(duan)(duan)頭直(zhi)接頂緊(jin)(jin)(jin)(jin)(jin)零(ling)(ling)件(jian)(jian)，一(yi)般用(yong)(yong)于安(an)裝后(hou)不常(chang)拆卸處;平端(duan)(duan)緊(jin)(jin)(jin)(jin)(jin)定(ding)(ding)(ding)螺(luo)釘(ding)(ding)的(de)(de)(de)(de)端(duan)(duan)頭平滑，頂緊(jin)(jin)(jin)(jin)(jin)后(hou)不損傷零(ling)(ling)件(jian)(jian)表面，用(yong)(yong)于需(xu)經常(chang)調(diao)節(jie)位置(zhi)的(de)(de)(de)(de)聯(lian)接處，只能傳遞(di)較(jiao)小的(de)(de)(de)(de)荷載;圓柱(zhu)端(duan)(duan)緊(jin)(jin)(jin)(jin)(jin)定(ding)(ding)(ding)螺(luo)部用(yong)(yong)在(zai)需(xu)經常(chang)調(diao)節(jie)固(gu)定(ding)(ding)(ding)位置(zhi)，它能承受較(jiao)大的(de)(de)(de)(de)荷載作用(yong)(yong)，但防松性能差，固(gu)定(ding)(ding)(ding)時(shi)需(xu)采取防松措施(shi);階梯肜緊(jin)(jin)(jin)(jin)(jin)定(ding)(ding)(ding)螺(luo)釘(ding)(ding)適(shi)用(yong)(yong)于壁厚較(jiao)大的(de)(de)(de)(de)零(ling)(ling)件(jian)(jian)固(gu)定(ding)(ding)(ding)。

6、自(zi)攻(gong)螺(luo)(luo)釘 自(zi)攻(gong)螺(luo)(luo)釘用在(zai)被聯(lian)接(jie)(jie)件(jian)上時(shi)(shi)，被聯(lian)接(jie)(jie)處可以不預先(xian)制(zhi)出(chu)(chu)螺(luo)(luo)紋。在(zai)聯(lian)接(jie)(jie)時(shi)(shi)利(li)用螺(luo)(luo)釘直(zhi)接(jie)(jie)攻(gong)出(chu)(chu)螺(luo)(luo)紋。它常用于聯(lian)接(jie)(jie)厚度較薄的(de)金屬(shu)板。其品種有錐端(duan)自(zi)攻(gong)螺(luo)(luo)釘與(yu)平端(duan)自(zi)攻(gong)螺(luo)(luo)釘兩種。

7、自(zi)(zi)攻鎖緊(jin)螺(luo)(luo)釘(ding)(ding) 自(zi)(zi)攻鎖緊(jin)螺(luo)(luo)釘(ding)(ding)不僅具有(you)(you)(you)自(zi)(zi)攻作(zuo)用，而且還具有(you)(you)(you)低擰入力(li)矩和高(gao)鎖緊(jin)的(de)性能(neng)。它的(de)螺(luo)(luo)紋為三角形截面，螺(luo)(luo)釘(ding)(ding)的(de)表(biao)面經(jing)過淬(cui)硬處理(li)，有(you)(you)(you)較高(gao)的(de)硬度。它的(de)螺(luo)(luo)紋規格有(you)(you)(you)M2～M12