螺絲釘是由頭部和(he)螺桿兩部分構成的(de)一類常用(yong)緊(jin)固(gu)件，主要(yao)用(yong)來連接固(gu)定零(ling)件，大多是起到緊(jin)固(gu)和(he)便于安裝(zhuang)拆(chai)卸的(de)作(zuo)用(yong)。隨著(zhu)螺釘在我們日常生活中(zhong)使用(yong)越來越廣泛，除(chu)了對其優點的(de)認同外，人們開(kai)始關注其分類及規格型號。

螺絲釘種類：

1、開槽普(pu)通螺(luo)釘(ding)(ding)(ding)(ding) 多用(yong)(yong)于較(jiao)小(xiao)零件(jian)的(de)連接。它(ta)有盤(pan)頭(tou)(tou)(tou)螺(luo)釘(ding)(ding)(ding)(ding)、圓柱頭(tou)(tou)(tou)螺(luo)釘(ding)(ding)(ding)(ding)、半沉頭(tou)(tou)(tou)螺(luo)釘(ding)(ding)(ding)(ding)和沉頭(tou)(tou)(tou)螺(luo)釘(ding)(ding)(ding)(ding)。盤(pan)頭(tou)(tou)(tou)螺(luo)釘(ding)(ding)(ding)(ding)和圓柱頭(tou)(tou)(tou)螺(luo)釘(ding)(ding)(ding)(ding)的(de)釘(ding)(ding)(ding)(ding)頭(tou)(tou)(tou)強度較(jiao)高(gao)，瑁在普(pu)通的(de)部件(jian)連接上;半沉頭(tou)(tou)(tou)螺(luo)釘(ding)(ding)(ding)(ding)的(de)頭(tou)(tou)(tou)部呈弧(hu)形，安(an)裝后它(ta)的(de)頂端略外露，且(qie)美(mei)觀光滑，一般用(yong)(yong)于儀器或精密機械上;沉頭(tou)(tou)(tou)螺(luo)釘(ding)(ding)(ding)(ding)則用(yong)(yong)于不允許釘(ding)(ding)(ding)(ding)頭(tou)(tou)(tou)露出的(de)地方。

2、內六(liu)角(jiao)(jiao)及內六(liu)角(jiao)(jiao)花形螺釘 這類螺釘的(de)頭部能埋入構件(jian)中(zhong)，可施(shi)加較(jiao)大的(de)扭矩，連接強(qiang)度較(jiao)高，可代替六(liu)角(jiao)(jiao)螺栓。常(chang)用于結構要求緊湊，外觀平滑的(de)聯接處。

3、十(shi)(shi)字(zi)(zi)槽(cao)普通(tong)(tong)(tong)螺(luo)釘(ding) 它與開槽(cao)普通(tong)(tong)(tong)螺(luo)釘(ding)的(de)使(shi)用(yong)功能相似，可互相代換，但(dan)十(shi)(shi)字(zi)(zi)槽(cao)普通(tong)(tong)(tong)螺(luo)釘(ding)的(de)槽(cao)形強(qiang)度較(jiao)高，不易(yi)擰禿，外(wai)形較(jiao)為(wei)美(mei)觀。使(shi)用(yong)時須(xu)用(yong)與之配(pei)套的(de)十(shi)(shi)字(zi)(zi)形旋(xuan)具進行裝卸。

4、吊(diao)環螺釘 吊(diao)環螺釘是供安(an)裝和(he)運輸時承(cheng)重的一種五(wu)金配件(jian)。使用(yong)(yong)時螺釘須旋進至(zhi)使支(zhi)承(cheng)面(mian)緊密貼合的位置，不(bu)準使用(yong)(yong)工具(ju)扳緊，也不(bu)允(yun)許有(you)垂(chui)直(zhi)于吊(diao)環平面(mian)的荷(he)載作(zuo)用(yong)(yong)在上面(mian)。

5、緊(jin)(jin)(jin)定(ding)(ding)螺釘(ding)(ding) 緊(jin)(jin)(jin)定(ding)(ding)螺釘(ding)(ding)用(yong)(yong)于固(gu)定(ding)(ding)機(ji)件(jian)的(de)相(xiang)對位置。把(ba)緊(jin)(jin)(jin)定(ding)(ding)螺釘(ding)(ding)旋入待緊(jin)(jin)(jin)定(ding)(ding)的(de)零(ling)件(jian)的(de)螺孔中，以其末端緊(jin)(jin)(jin)壓在另一零(ling)件(jian)的(de)表面上，即把(ba)前一零(ling)件(jian)固(gu)定(ding)(ding)在后(hou)(hou)一零(ling)件(jian)上。 緊(jin)(jin)(jin)定(ding)(ding)螺釘(ding)(ding)通常(chang)(chang)由(you)鋼或不(bu)銹(xiu)鋼材料制造，它的(de)端頭(tou)形狀有錐(zhui)形、凹形、平頭(tou)形、圓柱形和階(jie)(jie)梯(ti)形等(deng)。錐(zhui)端或凹端緊(jin)(jin)(jin)定(ding)(ding)螺釘(ding)(ding)的(de)端頭(tou)直(zhi)接頂緊(jin)(jin)(jin)零(ling)件(jian)，一般用(yong)(yong)于安裝后(hou)(hou)不(bu)常(chang)(chang)拆卸處;平端緊(jin)(jin)(jin)定(ding)(ding)螺釘(ding)(ding)的(de)端頭(tou)平滑，頂緊(jin)(jin)(jin)后(hou)(hou)不(bu)損傷(shang)零(ling)件(jian)表面，用(yong)(yong)于需(xu)經常(chang)(chang)調節位置的(de)聯接處，只能傳遞(di)較小(xiao)的(de)荷載;圓柱端緊(jin)(jin)(jin)定(ding)(ding)螺部用(yong)(yong)在需(xu)經常(chang)(chang)調節固(gu)定(ding)(ding)位置，它能承受較大(da)的(de)荷載作用(yong)(yong)，但防松性能差(cha)，固(gu)定(ding)(ding)時需(xu)采取防松措施;階(jie)(jie)梯(ti)肜(rong)緊(jin)(jin)(jin)定(ding)(ding)螺釘(ding)(ding)適(shi)用(yong)(yong)于壁厚(hou)較大(da)的(de)零(ling)件(jian)固(gu)定(ding)(ding)。

6、自攻(gong)螺(luo)釘(ding) 自攻(gong)螺(luo)釘(ding)用在被聯接(jie)件上時，被聯接(jie)處可以不預先制(zhi)出螺(luo)紋。在聯接(jie)時利(li)用螺(luo)釘(ding)直接(jie)攻(gong)出螺(luo)紋。它(ta)常用于聯接(jie)厚度(du)較薄(bo)的金屬板。其品種有錐端自攻(gong)螺(luo)釘(ding)與平端自攻(gong)螺(luo)釘(ding)兩種。

7、自(zi)(zi)攻(gong)(gong)鎖(suo)緊(jin)螺(luo)釘 自(zi)(zi)攻(gong)(gong)鎖(suo)緊(jin)螺(luo)釘不僅具有(you)(you)自(zi)(zi)攻(gong)(gong)作用，而(er)且還(huan)具有(you)(you)低擰入力矩和高鎖(suo)緊(jin)的(de)(de)性能。它的(de)(de)螺(luo)紋為三角形截面，螺(luo)釘的(de)(de)表面經過淬(cui)硬處理，有(you)(you)較(jiao)高的(de)(de)硬度。它的(de)(de)螺(luo)紋規(gui)格有(you)(you)M2～M12