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    Current page location: Home Page > Article > 螺絲規(guī)格定義與認(rèn)識
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    lina lina
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    螺絲規(guī)格定義與認(rèn)識
    Browse volume:316 | Reply:1 | Release time:2009-11-11 09:35:03

    一.?螺紋種類:
    A:?三角螺紋?(?60?度?)?:?結(jié)合/?鎖緊
    B:?管用三角螺紋?(?55?度?):?結(jié)合/?鎖緊
    C:?梯形螺紋?(?30?or?29?度)?:?動力傳動
    D:?方螺紋?(?90?度)?:?動力傳動
    二.?常用螺絲種類:
    A:?Machine?Screw:?機械螺絲
    B:?Tapping?Screw:?自攻螺絲?(分使用于金屬與使用于塑料二種)
    B-1:?Sheet?Metal?Tapping?Screw.?(鐵板牙自攻螺絲)
    B-2:?Plastic?Tapping?Screw.?(?塑料用,?自攻螺絲)
    C:?Wooden?Screw?:?木工螺絲
    D:?Drywall?Screw?:?水泥墻螺絲
    三.?常見螺絲材質(zhì):
    a.Low?Carbon?Steel?:低碳鋼
    b.?SS-304?:?Stainless?Steel?304
    c.?SS-302:?Stainless?Steel?302?:結(jié)構(gòu)韌性較好
    d.?Aluminum?5052?:鋁合金?5052
    d.?Brass:?黃銅
    e.?Bronze:?青銅
    f.?UNS?C11000?Copper:?銻銅
    四.?常見螺絲規(guī)格與標(biāo)示:
    A:?公制螺絲
    B:?美規(guī)螺絲
    C:?英制螺絲
    A:?公制機械螺絲:?Metric
    Ex:?M3?x?6?–?P?P?B?:?M3?機械螺絲,?6mm?長,?十字,?圓扁頭,?鍍黑.
    Finish?Code:?外觀處理規(guī)格
    Head?Code:?頭部外型
    Thread?Code
    螺絲型號?Drive?Code:?頭部剖溝,特征型號
    Length?Code:?螺絲長度?(mm)
    A-1:?Thread?Code:?螺絲型號
    公制螺絲直接以螺絲外徑標(biāo)示螺絲型號,
    如M3?即螺絲外徑為3.00mm.;?M4?即螺絲外徑為4.00mm.
    Metric?Thread?Size?x?Pitch:
    Note:?公制螺絲于螺絲型號后方,有時會注明螺絲牙距.
    如M3x0.5?,?M4x0.70,?M5x0.8?,?M6x1.
    但因為標(biāo)準(zhǔn)規(guī)范,?通常不提.
    A-2:?Length?Code:?螺絲長度:
    公制螺絲,?直接標(biāo)示螺絲長度,?單位為mm.
    螺絲之總長度標(biāo)示,?只計算頭部以下之長度,?不含頭部高度.
    但平頭螺絲例外,?其螺絲之總長度標(biāo)示含頭部高度.
    A-3:?Drive?Code/?頭部剖溝,特征.
    一般常用規(guī)格如下:
    a.?Slotted:?一字?(?Minus?)
    b.?Phillips:?十字?(?Plus?)
    c.?Phil-Slot:?一字/十字
    d.?Hex?Scoket:?內(nèi)六角
    e.?One?Way:?單向?(只可鎖入,不可退出)
    A-4:?Head?Code/?頭部外型.
    一般常用規(guī)格如下:
    a.?Flat:?平頭?(鎖入后,頂部與工作件齊平)
    b.?Oval:?色拉頭
    c.?Round:?圓頭
    d.?Pan:?圓扁頭
    e.?Truss:?大圓扁頭
    f.?Hex?:?六角頭.
    A-5:?Finish?Code/?外觀處理.
    一般常用規(guī)格如下:
    a.?Z:?Zine-Plated:?鍍鋅
    b.?Ni:?Ni-Plated:?鍍鎳
    c.?Tin-Plated:?鍍錫
    d.?Zine?Plated?/?Green?Iridite:?鍍鋅綠膜處理.
    e.?Radiant?Plated:?鍍五彩
    f.?Passivate:?抗氧化處理.
    g.?Alodial?Finish:?無外觀處理
    公制自攻螺絲?:于品名后方直接標(biāo)示?Tapping?Type.
    Ex:?M3?x?6?–PPB,?Tapping?Type:
    M3?自攻螺絲,?6mm?長,?十字,?圓扁頭,?鍍黑.
    一般以產(chǎn)品別或標(biāo)示,?再判斷為Sheet?Metal?或塑料部品使用.
    B:?美規(guī)螺絲.
    a.一般以番號標(biāo)示,?如?#2-56,?#4-40,?#6-32,?#8-32,?#10-24…etc.
    b.或以英制外徑表示,
    如0.086-56,?0.112-40?,?0.138-32?,?0.164-32?,?0.190-24…etc.
    Ex:?632?–?8?–?P?P?B:
    Finish?Code:?外觀處理規(guī)格
    Head?Code:?頭部外型
    Drive?Code:?頭部剖溝,特征型號
    Length?Code:?螺絲長度
    Thread?Code:?螺絲型號
    B-1:?Thread?Code:?螺絲型號
    一般常用規(guī)格如下:
    a.?#2-56?(0.086-56):?2?番?56?牙
    b?#4-40?(0.112-40)?:?4?番40?牙
    c.?#6-32?(0.138-32)?:?6?番32?牙
    d.?#8-32?(0.164-32)?:?8?番?32?牙
    e.?#10-24?(0.190-24):?10?番?24?牙
    ***牙為每吋之牙數(shù).***
    B-2:?Length?Code:?螺絲長度
    美規(guī)螺絲長度須經(jīng)換算,?才是公制mm?尺寸.
    換算公式:?(Length?Code?/?32)?x?25.40?=?公制長度mm
    B-3,?B-4,B-5?:?標(biāo)示方式與公制相同.
    C:?英制螺絲:
    C-1:?Thread?Code:
    標(biāo)示皆將分母為8,?再直接稱分子之番號.
    Ex:?1/8?x?0.50?–PPB:?1?分牙螺絲?x?0.50”?長,?PPB
    Ex:?5/16?x?0.50?–PPB?=?2.5/8?x?0.50-PPB?:?2?分半牙螺絲?x?0.50”?長,?PPB
    Ex:?5/32?x?0.50?–PPB?=1.25/8?x?0.50-PPB:?1?分2?厘半螺絲x?0.50”?長,?PPB
    Ex:?1/4?x?0.50-PPB=?2/8?x?0.50-PPB:?2?分牙螺絲?x?0.50”?長,?PPB
    注:?有時會標(biāo)示粗牙或細(xì)牙.
    UNF:?細(xì)牙?:電子業(yè)較常用.
    UNC:粗牙?:?重機械結(jié)構(gòu)較常用.
    Ex:?3/8?x?0.50?,UNF?–PPB:?3?分細(xì)牙螺絲?x?0.50”?長,?PPB.
    C-2:?Length?Code:
    為英吋標(biāo)示,?須乘以25.40?換算為mm

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    兄弟你要惱火了,發(fā)這些文章會給扣易幣的

    2009-11-11 09:44:09
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