maxminmaxminmaxminmaxmin m31.54.56g2.9802.8742.6552.5806h2.7752.6752.5902.495 m4266g3.4783.7493.5233.4336h3.6633.5453.4223.242 m52.57.56g4.9794.7604.4564.3616h4.6054.4804.3344.134 7g4.9764.7404.4564.3067h4.6404.4804.3844.134 m6396g5.9745.7325.3245.2126h5.5005.3505.1534.917 7g5.9745.6945.3245.1447h5.5405.3505.2174.917 m8412

常用公制螺紋基本尺寸和極限尺寸表

公稱直徑螺距公稱直徑每英寸牙數 dpdn m30.58#32 m40.710#24 m50.812#24 m611/420 m81.255/1618 m101.53/816 m121.757/1614 m1421/213 m1629/1612 m182.55/811 m202.53/410 m222.57/89 m24318 m27311/87 m303.511/47 m333.513/86 m36411/26 m39413/45 m424.5241/2 m454.521/441/2 m485 m525 m565.5 m605.5 m646 m686 m726 重型六角螺母h=d厚度公差范圍d小于或等于m18公

mm sizethreaddesignationclassmaxminmaxminmax 0.25m0.25x0.0756g0.2500.2350.2010.1870.160 m0.25x0.0754g6g0.2500.2350.2010.1930.160 0.3m0.3x0.086g0.3000.2840.2480.2340.204 m0.3x0.084g6g0.3000.2840.2480.2390.204 m0.3x0.096g0.3000.2830.2420.2260.192 m0.3x0.094g6g0.3000.2830.2420.2330.192 0.35m0.35x0.096g0.3500.3330.2920.2770.242 m0.35x0.094g6g0.350

公稱直徑螺距 dpal2 m330.52.2411481.8 m3.53.5-0.62.5502 m440.73.152.5 m4.54.5-0.753.552.8 m550.8416583.15 m664.5193.55 m775.6194.57 m886.35 m997.15.6 m10102480 m11112585 m12121.75929897.110 m141411.23095912 m161612.5321021013 m1818 m2020 m2222163811812.516 m2424181301418 m2727135 m303048138 m333322.4511511822 m3

鍍鋅管 外經 塑料管 外經 公制 zg 英制 npt 公制 zg 英制 npt 公制 zg 英制 npt 公制 zg 英制 npt 公制 zg 英制 npt 公制 zg 英制 npt g（直 牙） 公制 zg（錐 牙） 英制 npt 公制 zg 英制 nptg 公制 zg 英制 npt 公制 zg 英制 npt 公制 zg 英制 npt 公制 zg 英制 npt 公制 zg 英制 npt 公制 zg 英制 npt 公制 zg 英制 npt 1/16287.723 1/82828279.728 1/413.513.6213.1613.6212.6613.131.301.430.861.131.341.4119191813.1613.6213.1612.3012.4911.4511.366.005.79φ11.2φ11.19.

螺紋尺寸標準

美制螺紋尺寸表 外螺紋 公稱螺紋牙牙螺公差螺紋外徑螺紋中徑螺紋小徑公差螺紋 直徑規格數高距代號maxminmaxminmax代號min 0.073（#1）1-64unc640.2360.3972a1.838961.742441.582421.531621.366522b1.42494 1.8543a1.85421.757681.597661.559561.381763b1.42494 1-72unf720.210.3532a1.838961.750061.610361.56211.419862b1.4732 3a1.85421.76531.62561.590041.43513b1.4732 0.086(#2)2-56unc560.2710.45

大徑中徑小徑牙高大徑中徑小徑牙高 10.2510.8380.7290.135121.751210.86310.1060.947 1.10.251.10.9380.8290.1351421412.70111.8351.083 1.20.251.21.0380.9290.1351621614.70113.8351.083 1.40.31.41.2051.0750.162182.51816.37615.2941.353 1.60.351.61.3731.2210.189202.52018.37617.2941.353 1.80.351.81.5731.4210.189222.52220.37619.2941.353 20.421.741.567

公制外螺紋（6g）常用規格極限尺寸表（粗牙） 小徑 最大最小最大最小最大最小最大 m3×0.52.9802.8742.6552.5802.4392.602.63 m4×0.73.9783.8383.5233.4333.2203.473.50 m5×0.84.9764.8264.4564.3614.1104.404.43 m6×15.9745.7945.3245.2124.8915.265.29 m8×1.257.9727.7607.1607.0426.6197.107.14 m10×1.59.9689.7328.9948.8628.3448.928.96 m12×1.7511.96611.70110.82910.67910.07210.7510.79 m14×213.9621

第1頁共3頁 竭誠為您提供優質文檔/雙擊可除 國標螺紋尺寸表格 篇一：國標螺紋標準對照表 篇二：普通螺紋標準規格表 普通螺紋標準規格表 篇三：螺紋國標對照表 普通螺紋直徑與螺距系列gb/t193—1981 普通螺紋基(國標螺紋尺寸表格)本尺寸gb/t196—1981 普通螺紋公差與配合gb/t197—1981 普通螺紋偏差表gb/t2516—1981 商品緊固件的普通螺紋選用系列jb/t7912—1999 商品緊固件的中等精度普通螺紋極限尺寸gb/t9145— 1988光學螺紋光學儀器特種細牙螺紋zbn30006—1988光學 儀器用目鏡螺紋jb/t8204—1995 光學儀器用短牙螺紋jb/t5450-1991 緊配合螺紋過渡配合螺紋gb/t1167—1996 過盈配合螺紋gb/t1181—1998 小螺紋小螺紋牙

螺紋公制尺寸表

螺紋底孔尺寸表

公制外螺紋（6g）常用規格極限尺寸表（粗牙） 小徑 最大最小最大最小最大最小最大 m3×0.52.9802.8742.6552.5802.4392.602.63 m4×0.73.9783.8383.5233.4333.2203.473.50 m5×0.84.9764.8264.4564.3614.1104.404.43 m6×15.9745.7945.3245.2124.8915.265.29 m8×1.257.9727.7607.1607.0426.6197.107.14 m10×1.59.9689.7328.9948.8628.3448.928.96 m12×1.7511.96611.70110.82910.67910.07210.7510.79 m14×213.9621

２ｂ max 3b max ２ｂ、３ｂ max no.1640.3971.5821.5821.425 no.2560.4541.8721.8721.694 no.3480.5292.1462.1461.941 no.4400.6352.3852.3852.156 no.5400.6352.6972.6972.487 no.6320.7942.8962.8962.642 no.8320.7943.5313.5283.302 no.10241.0583.9623.953.683 no.12241.0584.5974.594.343 1/4201.275.2685.254.976 5/16181.4116.7846.686.411 3/8161.5888.164

常用螺紋尺寸對照表 英制螺紋中國標準管螺紋公制螺紋 粗牙(unc)細牙(unf)螺紋尺寸大徑(mm)小徑(mm)粗牙細牙 螺紋尺寸底孔(mm)底孔螺紋尺寸底孔(mm)底孔g1/8"-289.738.5螺紋尺寸底孔(mm)螺紋尺寸底孔(mm) 3#-482.0.0785"3#-562.05.081"g1/4"-1913.211.4m2.5*0.452.1m2.5*0.352.12 4#-402.26.089"4#-482.4.935"g3/8"-1916.715.0m3*0.52.5m3*0.352.62 5#-402.6.1015"5#-442.65.104"g1/2"-1421.018.6m4*0.7

螺紋尺寸螺紋尺寸 （英寸）大徑中徑小徑（英寸）psigmpapsigmpa 5/16247.9387.2496.7925/1624456831.5456831.5 7/162011.11310.2879.7387/1620456831.5456831.5 1/22012.711.87511.3251/220456831.5362625 9/161814.28813.32512.5599/1618456831.5362625 3/41619.0518.01917.3313/416456831.5362625 1-1/161226.98825.61324.6951-1/1612362625290020 1-5/161233.33831.96331.0

尺寸 偏差 ±tpl 尺寸 偏差 ±tpl/2 磨損下限尺寸 m1.41.41.2050.260.300.002####0.0070.00950.00751.4020.00701.20720.00351.19771.349 m1.71.71.4730.30.3500.006####0.0090.01250.00951.7060.00901.47870.00451.46621.638 m221.7400.350.400.006####0.0090.01250.00952.0060.00901.74620.00451.73371.921 m2.52.52.2080.390.4500.006####0.0090.01250.00952.5060.00902.21370.0

常用 螺紋 尺寸 對照 表 英制 螺紋 中國 標準管螺 紋 公 制螺紋 粗 牙(unc) 細 牙(unf) 螺紋尺寸大徑(mm)小徑(mm)粗 牙 細 牙 螺紋尺寸 底孔 (mm)底孔螺紋尺寸 底孔 (mm)底孔g1/8"-289.738.5螺紋尺寸底孔(mm)螺紋尺寸底孔(mm) 3#-482.0.0785"3#-562.05.081"g1/4"-1913.211.4m2.5*0.452.1m2.5*0.352.12 4#-402.26.089"4#-482.4.935"g3/8"-1916.715.0m3*0.52.5m3*0.352.62 5#-402.6.1015"5#-442.65.104"g1/2"-1421.018.6m4

常用螺紋 螺紋類型外圓刀具尺寸 攻(車)螺紋前外徑(工序 卡標注用） 外螺紋6g(2a) 零件圖標注用 內螺紋6h(2b) 零件圖標注用 內孔刀具尺寸 攻(車)螺紋前內徑(工序 卡標注用) m3*0.5φ3(-0.05/-0.1)φ3(-0.02/-0.126)φ2.459(+0.14/0)φ2.5(+0.08/0) m3*0.35φ3(-0.05/-0.1)φ3(-0.019/-0.104)φ2.621(+0.1/0)φ2.6(+0.12/+0.04) m4*0.7φ4(-0.05/-0.15)φ4(-0.022/-0.162)φ3.242(+0.18/0)φ3.3(+0.1/0) m4*0.5φ4(-0.05/-0.1)φ4(-0.02/-0.126)φ3.459(+0.14/0)φ3.5(+0.1/0) m5*0.8

1 美制外螺紋（2a）常用規格極限尺寸表（粗牙） 公稱尺寸和 每英寸牙數 螺紋 系列 代號 大徑極限中徑極限 小徑max 螺胚直徑 最小最大最小最大最小最大 8-32 unc 0.15710.16310.13990.14280.1248 3.583.61 (0.164-32)3.99034.14273.55353.62713.1699 10-240.18180.18900.15860.16190.1379 4.074.10 (0.190-24)4.61774.80064.02844.11233.5027 12-240.20780.21500.18450.18790.1639 4.724.75 (0.216-24)5.2781

從到minmaxminmax從到maxminmaxminmaxmin 31.54.532.6752.7752.4592.59931.54.52.9802.8742.6552.5802.3672.256 3.51.753.53.1103.2222.8503.0103.51.753.4793.3543.0893.0042.7432.615 42643.5453.6633.2423.4224263.9783.8383.5233.4333.1192.979 52.57.554.4804..6054.1344.33452.57.54.9764.8264.4564.3613.9953.842 63965.3505.5004.9175.1