螺(luo)絲釘(ding)是由頭部和(he)螺(luo)桿兩部分構成的(de)(de)一類(lei)常用(yong)緊固(gu)件(jian)，主要用(yong)來連接(jie)固(gu)定(ding)零件(jian)，大多是起到緊固(gu)和(he)便于安(an)裝拆卸的(de)(de)作用(yong)。隨著螺(luo)釘(ding)在我們日(ri)常生活(huo)中使用(yong)越(yue)來越(yue)廣泛，除了(le)對其優點的(de)(de)認同外，人們開始(shi)關注其分類(lei)及(ji)規格(ge)型號。

螺絲釘種類：

1、開槽普(pu)通螺(luo)(luo)釘(ding) 多用于較(jiao)小零件的(de)連(lian)接。它有盤頭(tou)(tou)(tou)螺(luo)(luo)釘(ding)、圓柱頭(tou)(tou)(tou)螺(luo)(luo)釘(ding)、半(ban)沉頭(tou)(tou)(tou)螺(luo)(luo)釘(ding)和沉頭(tou)(tou)(tou)螺(luo)(luo)釘(ding)。盤頭(tou)(tou)(tou)螺(luo)(luo)釘(ding)和圓柱頭(tou)(tou)(tou)螺(luo)(luo)釘(ding)的(de)釘(ding)頭(tou)(tou)(tou)強度較(jiao)高(gao)，瑁在普(pu)通的(de)部件連(lian)接上(shang);半(ban)沉頭(tou)(tou)(tou)螺(luo)(luo)釘(ding)的(de)頭(tou)(tou)(tou)部呈弧形，安裝后(hou)它的(de)頂端略外露，且美觀光(guang)滑，一般(ban)用于儀器或(huo)精密機械上(shang);沉頭(tou)(tou)(tou)螺(luo)(luo)釘(ding)則用于不允許釘(ding)頭(tou)(tou)(tou)露出的(de)地方。

2、內(nei)(nei)六角及內(nei)(nei)六角花(hua)形螺釘 這類(lei)螺釘的(de)頭部能埋入構件中(zhong)，可(ke)施加(jia)較大(da)的(de)扭矩，連(lian)接強度較高，可(ke)代替六角螺栓(shuan)。常(chang)用于結構要(yao)求緊湊，外觀(guan)平滑的(de)聯接處(chu)。

3、十字(zi)槽(cao)(cao)普(pu)通螺釘(ding)(ding) 它與開(kai)槽(cao)(cao)普(pu)通螺釘(ding)(ding)的(de)使用(yong)(yong)功能(neng)相(xiang)似，可互相(xiang)代換，但十字(zi)槽(cao)(cao)普(pu)通螺釘(ding)(ding)的(de)槽(cao)(cao)形(xing)(xing)強度較(jiao)高，不易擰禿，外形(xing)(xing)較(jiao)為美觀。使用(yong)(yong)時須(xu)用(yong)(yong)與之配套的(de)十字(zi)形(xing)(xing)旋具進行裝(zhuang)卸(xie)。

4、吊(diao)環(huan)螺(luo)釘 吊(diao)環(huan)螺(luo)釘是供安裝和運輸時承重的(de)一種五(wu)金配(pei)件(jian)。使(shi)(shi)用時螺(luo)釘須旋進(jin)至使(shi)(shi)支承面(mian)緊(jin)密(mi)貼(tie)合的(de)位置，不準(zhun)使(shi)(shi)用工具扳(ban)緊(jin)，也(ye)不允許有垂(chui)直(zhi)于(yu)吊(diao)環(huan)平(ping)面(mian)的(de)荷(he)載作用在上面(mian)。

5、緊(jin)(jin)(jin)定(ding)(ding)(ding)(ding)(ding)螺(luo)(luo)釘(ding)(ding)(ding) 緊(jin)(jin)(jin)定(ding)(ding)(ding)(ding)(ding)螺(luo)(luo)釘(ding)(ding)(ding)用(yong)于(yu)固(gu)定(ding)(ding)(ding)(ding)(ding)機件(jian)(jian)的(de)(de)相(xiang)對位(wei)置。把緊(jin)(jin)(jin)定(ding)(ding)(ding)(ding)(ding)螺(luo)(luo)釘(ding)(ding)(ding)旋入待緊(jin)(jin)(jin)定(ding)(ding)(ding)(ding)(ding)的(de)(de)零(ling)件(jian)(jian)的(de)(de)螺(luo)(luo)孔中，以其末端緊(jin)(jin)(jin)壓(ya)在(zai)(zai)另一(yi)零(ling)件(jian)(jian)的(de)(de)表面(mian)上(shang)，即把前一(yi)零(ling)件(jian)(jian)固(gu)定(ding)(ding)(ding)(ding)(ding)在(zai)(zai)后一(yi)零(ling)件(jian)(jian)上(shang)。 緊(jin)(jin)(jin)定(ding)(ding)(ding)(ding)(ding)螺(luo)(luo)釘(ding)(ding)(ding)通常(chang)(chang)(chang)由(you)鋼(gang)或(huo)(huo)不(bu)銹鋼(gang)材料制造，它(ta)的(de)(de)端頭形(xing)狀有錐形(xing)、凹形(xing)、平(ping)頭形(xing)、圓柱形(xing)和階梯(ti)形(xing)等。錐端或(huo)(huo)凹端緊(jin)(jin)(jin)定(ding)(ding)(ding)(ding)(ding)螺(luo)(luo)釘(ding)(ding)(ding)的(de)(de)端頭直接(jie)頂(ding)緊(jin)(jin)(jin)零(ling)件(jian)(jian)，一(yi)般用(yong)于(yu)安裝后不(bu)常(chang)(chang)(chang)拆卸處;平(ping)端緊(jin)(jin)(jin)定(ding)(ding)(ding)(ding)(ding)螺(luo)(luo)釘(ding)(ding)(ding)的(de)(de)端頭平(ping)滑，頂(ding)緊(jin)(jin)(jin)后不(bu)損傷零(ling)件(jian)(jian)表面(mian)，用(yong)于(yu)需(xu)經(jing)常(chang)(chang)(chang)調節(jie)位(wei)置的(de)(de)聯(lian)接(jie)處，只能傳遞較(jiao)小的(de)(de)荷載(zai)(zai);圓柱端緊(jin)(jin)(jin)定(ding)(ding)(ding)(ding)(ding)螺(luo)(luo)部用(yong)在(zai)(zai)需(xu)經(jing)常(chang)(chang)(chang)調節(jie)固(gu)定(ding)(ding)(ding)(ding)(ding)位(wei)置，它(ta)能承受較(jiao)大的(de)(de)荷載(zai)(zai)作用(yong)，但防松(song)性能差(cha)，固(gu)定(ding)(ding)(ding)(ding)(ding)時需(xu)采(cai)取防松(song)措施;階梯(ti)肜緊(jin)(jin)(jin)定(ding)(ding)(ding)(ding)(ding)螺(luo)(luo)釘(ding)(ding)(ding)適(shi)用(yong)于(yu)壁厚較(jiao)大的(de)(de)零(ling)件(jian)(jian)固(gu)定(ding)(ding)(ding)(ding)(ding)。

6、自攻(gong)螺(luo)釘(ding) 自攻(gong)螺(luo)釘(ding)用在(zai)被聯(lian)接(jie)(jie)件上時，被聯(lian)接(jie)(jie)處(chu)可以(yi)不預先制(zhi)出螺(luo)紋(wen)。在(zai)聯(lian)接(jie)(jie)時利(li)用螺(luo)釘(ding)直接(jie)(jie)攻(gong)出螺(luo)紋(wen)。它常用于聯(lian)接(jie)(jie)厚度較薄的金屬板。其品(pin)種有錐(zhui)端自攻(gong)螺(luo)釘(ding)與平端自攻(gong)螺(luo)釘(ding)兩種。

7、自攻(gong)鎖緊(jin)螺(luo)釘 自攻(gong)鎖緊(jin)螺(luo)釘不僅具有自攻(gong)作用，而(er)且還具有低擰入(ru)力矩和高(gao)鎖緊(jin)的(de)性能(neng)。它的(de)螺(luo)紋為三角形截面，螺(luo)釘的(de)表(biao)面經(jing)過(guo)淬硬(ying)處理，有較高(gao)的(de)硬(ying)度。它的(de)螺(luo)紋規(gui)格(ge)有M2～M12