螺(luo)(luo)絲釘(ding)是由頭部和螺(luo)(luo)桿兩部分構(gou)成(cheng)的一(yi)類(lei)常用(yong)緊(jin)固件，主(zhu)要用(yong)來連接固定零件，大多是起到緊(jin)固和便于安裝拆卸(xie)的作用(yong)。隨著(zhu)螺(luo)(luo)釘(ding)在我們日(ri)常生活(huo)中使用(yong)越(yue)(yue)來越(yue)(yue)廣(guang)泛，除了(le)對其優點的認同外(wai)，人們開始關(guan)注其分類(lei)及規格型號。

螺絲釘種類：

1、開槽普通(tong)(tong)螺(luo)(luo)釘(ding) 多用于較(jiao)小零件的(de)(de)連接(jie)。它有盤(pan)頭(tou)螺(luo)(luo)釘(ding)、圓柱頭(tou)螺(luo)(luo)釘(ding)、半(ban)(ban)沉(chen)(chen)頭(tou)螺(luo)(luo)釘(ding)和沉(chen)(chen)頭(tou)螺(luo)(luo)釘(ding)。盤(pan)頭(tou)螺(luo)(luo)釘(ding)和圓柱頭(tou)螺(luo)(luo)釘(ding)的(de)(de)釘(ding)頭(tou)強度(du)較(jiao)高，瑁在普通(tong)(tong)的(de)(de)部(bu)件連接(jie)上;半(ban)(ban)沉(chen)(chen)頭(tou)螺(luo)(luo)釘(ding)的(de)(de)頭(tou)部(bu)呈弧(hu)形(xing)，安(an)裝后(hou)它的(de)(de)頂(ding)端略外露(lu)(lu)，且美觀光滑，一般(ban)用于儀器或精密機械上;沉(chen)(chen)頭(tou)螺(luo)(luo)釘(ding)則(ze)用于不允許釘(ding)頭(tou)露(lu)(lu)出(chu)的(de)(de)地方。

2、內(nei)六(liu)角及內(nei)六(liu)角花形螺釘(ding) 這類螺釘(ding)的頭部能埋入構件(jian)中，可(ke)施加較大的扭矩，連接強度較高(gao)，可(ke)代(dai)替六(liu)角螺栓。常(chang)用于(yu)結構要求緊湊，外觀平滑的聯接處(chu)。

3、十(shi)字(zi)槽(cao)(cao)(cao)普(pu)通螺(luo)釘(ding)(ding) 它與開槽(cao)(cao)(cao)普(pu)通螺(luo)釘(ding)(ding)的使用(yong)功能相似，可互相代換，但十(shi)字(zi)槽(cao)(cao)(cao)普(pu)通螺(luo)釘(ding)(ding)的槽(cao)(cao)(cao)形(xing)強度(du)較(jiao)高，不(bu)易擰禿(tu)，外形(xing)較(jiao)為美(mei)觀。使用(yong)時須用(yong)與之配套的十(shi)字(zi)形(xing)旋具進行(xing)裝卸。

4、吊(diao)(diao)環螺(luo)釘(ding) 吊(diao)(diao)環螺(luo)釘(ding)是供安裝和運(yun)輸時承重的(de)(de)一種五金配件(jian)。使(shi)(shi)用時螺(luo)釘(ding)須(xu)旋進至使(shi)(shi)支承面緊(jin)密貼合的(de)(de)位置，不準(zhun)使(shi)(shi)用工(gong)具(ju)扳緊(jin)，也(ye)不允許有垂(chui)直于吊(diao)(diao)環平面的(de)(de)荷(he)載(zai)作用在(zai)上面。

5、緊(jin)(jin)(jin)(jin)(jin)定(ding)(ding)(ding)(ding)螺(luo)釘(ding)(ding)(ding) 緊(jin)(jin)(jin)(jin)(jin)定(ding)(ding)(ding)(ding)螺(luo)釘(ding)(ding)(ding)用(yong)(yong)于(yu)固(gu)(gu)定(ding)(ding)(ding)(ding)機件(jian)的相(xiang)對位(wei)置(zhi)。把緊(jin)(jin)(jin)(jin)(jin)定(ding)(ding)(ding)(ding)螺(luo)釘(ding)(ding)(ding)旋入待緊(jin)(jin)(jin)(jin)(jin)定(ding)(ding)(ding)(ding)的零(ling)(ling)(ling)件(jian)的螺(luo)孔中，以(yi)其末端(duan)(duan)緊(jin)(jin)(jin)(jin)(jin)壓在(zai)另一零(ling)(ling)(ling)件(jian)的表(biao)面(mian)上，即把前一零(ling)(ling)(ling)件(jian)固(gu)(gu)定(ding)(ding)(ding)(ding)在(zai)后一零(ling)(ling)(ling)件(jian)上。 緊(jin)(jin)(jin)(jin)(jin)定(ding)(ding)(ding)(ding)螺(luo)釘(ding)(ding)(ding)通常(chang)(chang)(chang)由(you)鋼或不(bu)銹(xiu)鋼材料制造，它的端(duan)(duan)頭形(xing)狀有錐(zhui)(zhui)形(xing)、凹形(xing)、平頭形(xing)、圓(yuan)柱形(xing)和階梯(ti)形(xing)等。錐(zhui)(zhui)端(duan)(duan)或凹端(duan)(duan)緊(jin)(jin)(jin)(jin)(jin)定(ding)(ding)(ding)(ding)螺(luo)釘(ding)(ding)(ding)的端(duan)(duan)頭直接頂緊(jin)(jin)(jin)(jin)(jin)零(ling)(ling)(ling)件(jian)，一般(ban)用(yong)(yong)于(yu)安裝后不(bu)常(chang)(chang)(chang)拆卸處(chu);平端(duan)(duan)緊(jin)(jin)(jin)(jin)(jin)定(ding)(ding)(ding)(ding)螺(luo)釘(ding)(ding)(ding)的端(duan)(duan)頭平滑，頂緊(jin)(jin)(jin)(jin)(jin)后不(bu)損傷零(ling)(ling)(ling)件(jian)表(biao)面(mian)，用(yong)(yong)于(yu)需(xu)經常(chang)(chang)(chang)調(diao)節位(wei)置(zhi)的聯(lian)接處(chu)，只(zhi)能傳遞較小的荷載;圓(yuan)柱端(duan)(duan)緊(jin)(jin)(jin)(jin)(jin)定(ding)(ding)(ding)(ding)螺(luo)部用(yong)(yong)在(zai)需(xu)經常(chang)(chang)(chang)調(diao)節固(gu)(gu)定(ding)(ding)(ding)(ding)位(wei)置(zhi)，它能承受較大(da)的荷載作用(yong)(yong)，但防松性能差，固(gu)(gu)定(ding)(ding)(ding)(ding)時需(xu)采取防松措(cuo)施;階梯(ti)肜(rong)緊(jin)(jin)(jin)(jin)(jin)定(ding)(ding)(ding)(ding)螺(luo)釘(ding)(ding)(ding)適用(yong)(yong)于(yu)壁厚較大(da)的零(ling)(ling)(ling)件(jian)固(gu)(gu)定(ding)(ding)(ding)(ding)。

6、自(zi)(zi)攻(gong)螺釘 自(zi)(zi)攻(gong)螺釘用在被聯(lian)(lian)接(jie)件(jian)上時，被聯(lian)(lian)接(jie)處可以不預(yu)先制出(chu)螺紋。在聯(lian)(lian)接(jie)時利用螺釘直接(jie)攻(gong)出(chu)螺紋。它常用于聯(lian)(lian)接(jie)厚(hou)度較(jiao)薄(bo)的金屬板。其品(pin)種有(you)錐端(duan)自(zi)(zi)攻(gong)螺釘與平(ping)端(duan)自(zi)(zi)攻(gong)螺釘兩種。

7、自攻鎖(suo)緊(jin)螺釘 自攻鎖(suo)緊(jin)螺釘不(bu)僅具有(you)(you)自攻作用，而且還具有(you)(you)低擰(ning)入力矩和高鎖(suo)緊(jin)的性能。它(ta)的螺紋為三角形截(jie)面，螺釘的表面經過淬(cui)硬處(chu)理(li)，有(you)(you)較高的硬度。它(ta)的螺紋規(gui)格有(you)(you)M2～M12