英制螺母规格,英制螺母规格尺寸
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('名称:卡式螺母材质:碳钢表面处理:彩锌英制螺母规格美制十字沉头机螺丝材质:碳钢级别:美制2级表面:镀锌英美制螺丝中以英寸为单位,1英寸=25.4mm,4#=2.84mm;6#=3.51mm;8#=4.17mm;10#=4.83mm以4#-40牙1/2英寸为例“4#”——表示螺纹部分直径为4#(2.84mm)“-40牙”——表示(牙距),1英寸长度内有40个螺牙“1/2”——表示有效连接长度为1/2英寸(12.7mm)以1/4-20牙1-1/2为例子“1/4”——表示螺纹部分直径为1/4英寸(6.35mm)“-20牙”——表示(牙距),1英寸长度内有20个螺牙“1-1/2”——表示有效连接长度为1又1/2英寸,即等于1.5英寸(1.525.4mm=38.1mm)更详细尺寸请参考以下表格英制5+12MM螺丝配4#螺母DB9专用螺丝和螺母等紧固螺丝总长为:16.8MM螺纹部份为:12MM英制5+7MM螺丝(配4#螺母)DB9专用螺丝和螺母等紧固螺丝公制、美制和英制螺纹标准http://www.6sq.net/cdb/viewthread.php?tid=45420NPT,PT,G都是管螺纹.NPT是National(American)PipeThread的缩写,属於美国标准的60度锥管螺纹,用於北美地区.国家标准可查阅GB/T12716-1991。PT是PipeThread的缩写,是55度密封圆锥管螺纹,属惠氏螺纹家族,多用於欧洲及英联邦国家.常用於水及煤气管行业,锥度规定为1:16.国家标准可查阅GB/T7306-2000。G是55度非螺纹密封管螺纹,属惠氏螺纹家族.标记为G代表圆柱螺纹.国家标准可查阅GB/T7307-2001。另外螺纹中的1/4、1/2、1/8标记是指螺纹尺寸的直径,单位是英吋.行内人通常用分来称呼螺纹尺寸,一吋等於8分,1/4吋就是2分,如此类推.G好像就是管螺纹的统称(Guan),55,60度的划分属于功能性的,俗称管圆。即螺纹由一圆柱面加工而成。ZG俗称管锥,即螺纹由一圆锥面加工而成,一般的水管接头都是这样的,老国标标注为Rc。公制螺纹用螺距来表示,美英制螺纹用每英寸内的螺纹牙数来表示,这是它们最大的区别,公制螺纹是60度等边牙型,英制螺纹是等腰55度牙型,美制螺纹60度。公制螺纹用公制单位,美英制螺纹用英制单位。管螺纹主要用来进行管道的连接,其内外螺纹的配合紧密,有直管与锥管两种。公称直径是指所连接的管道直径,显然螺纹大径比公称直径大。1/4,1/2,1/8是英制螺纹的公称直径,单位是英寸。举例:6×1-1/2"的沉头螺钉细牙螺纹:6是螺丝的牙外径1"螺丝的长度.,1/2"螺丝的长度.190-32(#10-32).190应该是0.190是指0.190英寸(乘以25.4就是公制)32是指每英寸牙数#10是指10号英制有0(0.060)1(0.073)2(0.086)3(0.990)4(0.112)5(0.125)6(0.138)8(0.164)10(0.190)12(0.216)号比12号再大的就是1/4了5#(50.013+0.06=0.125inch)25.46#(60.013+0.06=0.138inch)25.4=3.51mm8#(80.013+0.06=0.164inch)25.4=10#(80.013+0.06=0.190inch)25.4=4.769C31/8441.是公称直径代号为5的美制统一细牙螺纹,大径为3.175mm。2.1/8是公称直径,换成公制是:25.4(1/8)=3.175mm3.44代表1英寸的长度有44牙螺纹,换成公制螺距是:25.4÷44≈0.577mm4.C3是不锈钢材料的一种(类)。不锈钢螺丝材料主要分为A类(奥氏体钢)、C类(马氏体钢)、F类(铁素体钢)。用扣规量,与公制牙型吻合是公制螺纹,与英制螺纹吻合是英制螺纹。也可以用卡尺量螺纹的外径,和螺距。公制螺纹外径是以毫米为单位,如6,8,10,12,18,20毫米等等螺距也是以毫米为单位,如0.5,0.75,1,1.5,2,3,等等英制螺纹外径是以英寸为单位,(每英寸等于25.4毫米)如3/16,5/8,1/4,1/2,等等所以用公制卡尺量外径读数常带不规则的小数。英制螺距是用每英寸含多少个牙表示。把卡尺定在25.4毫米,把一个尺尖对齐螺纹牙尖,另一个尺尖如对齐螺纹牙尖就是英制螺纹,如对不齐螺纹牙尖应该是公制螺纹。测量螺距时最好把螺纹的牙尖倒印在白粉笔上,粉笔上的印比较清晰,便于测量。测公制螺距应该测量一段长度,如10,15,20,毫米等等,数一下含多少牙,算出螺距。在英制中以每一英寸(25.4mm)内的牙数来表明牙距(如下表)。呼粗牙细牙韦氏牙M30.50.354#2.94048M40.70.56#3.53240M50.80.58#4.23236M61.00.7510#4.82432M71.00.7512#5.52428M81.251.00.751/46.35202820M101.51.251.05/167.94182418M121.751.51.253/89.53162416M142.01.51.07/1611.11142014M162.01.51.01/212.7132012M182.52.01.59/1614.29121812M202.52.01.55/815.86111811M222.52.01.53/419.05101610M243.02.01.57/822.239149M273.02.01.5125.408128M303.53.02.0英制螺母牙距规格:规格4#5#6#8#10#12#1/45/163/8牙粗牙404032322424201816距细牙484440363228282424英、美制标准螺纹直径、螺距参照系列表标准国别美制ANSIBI.1-1982英国标准BS84-1956规格直径UNC牙数/寸UNF牙数/寸BSW牙数/寸BSF牙数/寸0#1.52/80//1#1.856472//2#2.185664//3#2.514856//4#2.844048//5#,(1/8”)3.18404440/6#3.513240//8#4.173236//10#(3/16”)4.832432243212#(7/32”)5.492428/281/4”6.35202820265/16”7.94182418223/8”9.53162016207/16”11.11142014181/2”12.7131812169/16”14.29121812165/8”15.8811/111411/16”17.46/1611143/4”19.0510/101213/16”20.64/14//7/8”22.239/91115/16”23.81/12//1”25.481281011/8”28.587127911/4”31.757127913/8”34.93612/811/2"38.16126815/8”41.28///813/4”44.455/5717/8”47.63///2”50.84.5/57公制螺纹是以字母M开头,后面的数字就是螺纹的公称通径,有些会给出螺距,如果不给出螺距,则表示螺纹是标准粗牙螺纹。英制或美制螺纹是以分数或整数开头的,这个分数就是螺纹的公称通径,后面有根“-”,后面的数字表示每英寸多少牙,再后面有螺纹的精度等级,为1A,2A,3A,1B,2B,3B等。精度等级后面的英文字母一般表示螺纹的类型,如NPT,则表示为锥管螺纹。公制细牙内螺纹公制粗牙内螺纹规格标准径6H精度规格标准径6H精度DmaxDminDmaxDminM2.50.352.152.1842.121M1.40.31.101.161.075M3.00.352.652.6842.621M1.60.351.251.3211.221M3.50.353.153.2213.121M1.80.351.451.5211.421M4.00.503.503.5993.459M2.00.41.601.6791.567M4.50.504.004.0993.959M2.20.451.751.8381.713M5.00.504.504.5994.459M2.50.452.052.1382.013M5.50.505.005.0994.959M3.00.52.502.5992.459M6.00.755.255.3785.188M3.50.62.903.012.85M7.00.756.256.3786.188M4.00.73.303.4223.242M80.757.257.3787.188M4.50.753.753.8783.688M81.007.007.1536.917M5.00.84.204.3344.134M90.758.258.3788.188M5.50.55.005.0994.959M91.008.008.1537.917M6.01.005.005.1534.917M100.759.259.3789.188M7.01.006.006.1535.917M101.009.119.1538.917M8.01.256.756.9126.647M101.258.758.9128.647M9.01.257.757.9127.647M110.7510.2510.37810.188M101.508.508.6768.376M111.0010.0010.1539.917M111.509.509.6769.376M121.0010.7510.91210.647M121.7510.2510.4410.106M121.2510.5010.67610.376M142.0012.0012.2111.835M121.5011.0011.15310.917M151.5013.5013.67613.375M141.0013.0013.15312.917M162.0014.0014.2113.835M141.2512.7512.91212.647M171.5015.5015.67615.376M141.5012.5012.67612.376M182.5015.5015.74415.294M151.014.0014.15313.917M202.5017.5017.74417.294M151.5013.5013.67613.376M222.5019.5019.74419.294M161.015.0015.15314.917M243.0021.0021.25220.752M161.5014.5014.67614.376M273.0024.0024.25223.752M171.016.0016.15315.917M303.5026.5026.77126.211M171.5015.5016.67615.376M181.017.0017.15316.917M181.516.5016.67616.376M182.016.0016.2115.835M201.019.0019.15318.917M201.5018.5018.67618.376M202.018.0018.2117.835M221.021.0021.15320.917M221.5020.5020.67620.376M222.020.0020.2119.835M241.023.0023.15322.917M241.5022.5022.67622.376M242.022.0022.2121.835M251.024.0024.15323.917M251.523.5023.67623.376M252.023.0023.2122.835M261.5024.5024.67624.376M271.026.0026.15325.917M271.525.5025.67625.376M281.027.0027.15326.917M281.526.5026.67626.376M282.026.0026.2125.835M301.029.0029.15328.917M301.5028.5028.67628.376M302.028.0028.2127.835M303.027.0027.25226.752',)
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