螺絲釘是由頭部和螺桿兩部分構成的一類常(chang)用緊(jin)(jin)固(gu)件(jian)，主(zhu)要用來連接固(gu)定(ding)零件(jian)，大多是起到緊(jin)(jin)固(gu)和便于安裝拆(chai)卸的作用。隨(sui)著螺釘在我們日常(chang)生活中使用越來越廣(guang)泛，除了對其優點(dian)的認(ren)同外，人們開(kai)始(shi)關(guan)注其分類及規格型號(hao)。

螺絲釘種類：

1、開槽(cao)普通螺釘(ding)(ding)(ding) 多用于較(jiao)小零件的(de)(de)連接(jie)。它(ta)有盤(pan)頭(tou)(tou)(tou)螺釘(ding)(ding)(ding)、圓(yuan)柱(zhu)頭(tou)(tou)(tou)螺釘(ding)(ding)(ding)、半(ban)沉(chen)頭(tou)(tou)(tou)螺釘(ding)(ding)(ding)和沉(chen)頭(tou)(tou)(tou)螺釘(ding)(ding)(ding)。盤(pan)頭(tou)(tou)(tou)螺釘(ding)(ding)(ding)和圓(yuan)柱(zhu)頭(tou)(tou)(tou)螺釘(ding)(ding)(ding)的(de)(de)釘(ding)(ding)(ding)頭(tou)(tou)(tou)強度較(jiao)高，瑁在普通的(de)(de)部(bu)件連接(jie)上;半(ban)沉(chen)頭(tou)(tou)(tou)螺釘(ding)(ding)(ding)的(de)(de)頭(tou)(tou)(tou)部(bu)呈弧形，安裝后它(ta)的(de)(de)頂端(duan)略(lve)外(wai)露，且美觀光滑，一(yi)般用于儀器或精密機械上;沉(chen)頭(tou)(tou)(tou)螺釘(ding)(ding)(ding)則用于不允許釘(ding)(ding)(ding)頭(tou)(tou)(tou)露出的(de)(de)地方。

2、內六角及內六角花形螺(luo)釘 這類(lei)螺(luo)釘的頭部能埋入構件中，可(ke)(ke)施加較大的扭矩，連接(jie)強度較高，可(ke)(ke)代替六角螺(luo)栓。常用于結構要求緊湊，外觀(guan)平滑(hua)的聯接(jie)處。

3、十(shi)字(zi)槽(cao)普(pu)通(tong)(tong)螺釘(ding) 它與開槽(cao)普(pu)通(tong)(tong)螺釘(ding)的使用功(gong)能相似，可互相代換，但十(shi)字(zi)槽(cao)普(pu)通(tong)(tong)螺釘(ding)的槽(cao)形強度較高，不易擰禿(tu)，外(wai)形較為(wei)美觀。使用時須用與之配套的十(shi)字(zi)形旋具進行(xing)裝卸。

4、吊環螺(luo)(luo)釘 吊環螺(luo)(luo)釘是供安裝和運輸時承(cheng)重的一種五金(jin)配件。使用時螺(luo)(luo)釘須旋進至使支承(cheng)面(mian)緊密貼合的位(wei)置，不準使用工具扳緊，也不允許有垂(chui)直于吊環平面(mian)的荷載作(zuo)用在上面(mian)。

5、緊(jin)(jin)(jin)定(ding)(ding)(ding)螺(luo)釘(ding)(ding) 緊(jin)(jin)(jin)定(ding)(ding)(ding)螺(luo)釘(ding)(ding)用(yong)于(yu)固定(ding)(ding)(ding)機件(jian)(jian)(jian)的(de)(de)(de)(de)(de)相對位(wei)置(zhi)。把緊(jin)(jin)(jin)定(ding)(ding)(ding)螺(luo)釘(ding)(ding)旋入待緊(jin)(jin)(jin)定(ding)(ding)(ding)的(de)(de)(de)(de)(de)零件(jian)(jian)(jian)的(de)(de)(de)(de)(de)螺(luo)孔(kong)中，以其(qi)末端(duan)緊(jin)(jin)(jin)壓在(zai)另一(yi)(yi)(yi)零件(jian)(jian)(jian)的(de)(de)(de)(de)(de)表面上，即把前一(yi)(yi)(yi)零件(jian)(jian)(jian)固定(ding)(ding)(ding)在(zai)后一(yi)(yi)(yi)零件(jian)(jian)(jian)上。 緊(jin)(jin)(jin)定(ding)(ding)(ding)螺(luo)釘(ding)(ding)通常(chang)由鋼或不銹(xiu)鋼材料(liao)制造，它的(de)(de)(de)(de)(de)端(duan)頭(tou)形(xing)(xing)(xing)狀有錐形(xing)(xing)(xing)、凹(ao)形(xing)(xing)(xing)、平頭(tou)形(xing)(xing)(xing)、圓柱形(xing)(xing)(xing)和階(jie)梯形(xing)(xing)(xing)等。錐端(duan)或凹(ao)端(duan)緊(jin)(jin)(jin)定(ding)(ding)(ding)螺(luo)釘(ding)(ding)的(de)(de)(de)(de)(de)端(duan)頭(tou)直接頂緊(jin)(jin)(jin)零件(jian)(jian)(jian)，一(yi)(yi)(yi)般用(yong)于(yu)安(an)裝后不常(chang)拆卸處;平端(duan)緊(jin)(jin)(jin)定(ding)(ding)(ding)螺(luo)釘(ding)(ding)的(de)(de)(de)(de)(de)端(duan)頭(tou)平滑，頂緊(jin)(jin)(jin)后不損傷零件(jian)(jian)(jian)表面，用(yong)于(yu)需經(jing)(jing)常(chang)調節位(wei)置(zhi)的(de)(de)(de)(de)(de)聯接處，只能傳遞較(jiao)小(xiao)的(de)(de)(de)(de)(de)荷(he)載(zai);圓柱端(duan)緊(jin)(jin)(jin)定(ding)(ding)(ding)螺(luo)部(bu)用(yong)在(zai)需經(jing)(jing)常(chang)調節固定(ding)(ding)(ding)位(wei)置(zhi)，它能承受較(jiao)大(da)的(de)(de)(de)(de)(de)荷(he)載(zai)作用(yong)，但防(fang)松(song)性(xing)能差，固定(ding)(ding)(ding)時需采取防(fang)松(song)措施(shi);階(jie)梯肜緊(jin)(jin)(jin)定(ding)(ding)(ding)螺(luo)釘(ding)(ding)適用(yong)于(yu)壁厚(hou)較(jiao)大(da)的(de)(de)(de)(de)(de)零件(jian)(jian)(jian)固定(ding)(ding)(ding)。

6、自(zi)攻螺釘(ding) 自(zi)攻螺釘(ding)用(yong)在(zai)被聯接件上時(shi)，被聯接處(chu)可以不預先制出螺紋。在(zai)聯接時(shi)利用(yong)螺釘(ding)直接攻出螺紋。它常用(yong)于聯接厚(hou)度較薄(bo)的金屬板。其(qi)品種有錐(zhui)端自(zi)攻螺釘(ding)與(yu)平端自(zi)攻螺釘(ding)兩種。

7、自攻(gong)鎖緊螺(luo)(luo)釘 自攻(gong)鎖緊螺(luo)(luo)釘不僅(jin)具有(you)自攻(gong)作用，而(er)且還(huan)具有(you)低擰(ning)入力矩和高鎖緊的性能。它的螺(luo)(luo)紋(wen)為三角形截面，螺(luo)(luo)釘的表面經過淬(cui)硬處理，有(you)較高的硬度。它的螺(luo)(luo)紋(wen)規(gui)格有(you)M2～M12