1、螺母六角螺母一C級I型六角螺母一A和B級六角薄螺母(GB/T41-2000)(GB/T6170-2000)(GB/T6172.1-2000)標記示例螺紋規格D=M12、性能級別為5級、不經表面處理、C級的六角螺母：螺母 GB/T41-2000 M12螺紋規格 D=M12、性能級別為8級、不經表面處理、A級的I型六角螺母： 螺母 GB/T6170-2000 M12mm注：A級用于D016, B級用于D16螺紋規格DM3M4M5M6M8M10M12M16M20M24M30M36M42eGB/T418.6310.8914.2017.5919.8526.1732.9539.5550.8560.7972

2、.07GB/T61706.017.668.7911.0514.3817.7720.0326.7532.9539.5550.8560.7972.02GB/T6172.16.017.668.7911.0514.3817.7720.0326.7532.9539.5550.8560.7972.02sGB/T41810131618243036465565GB/T61705.57810131618243036465565GB/T6172.15.57810131618243036465565mGB/T415.66.17.99.512.215.918.722.325.431.534.9GB/T61702.43

3、.24.75.26.88.410.814.81821.525.63134GB/T6172.11.82.22.73.2456810121518211.各部位的尺寸單位：mm螺紋的公稱直徑（d） （2）M3M4M5M6M8M10M12(M14)螺栓的螺距（P）0.50.70.811.251.51.752b考1820222428323640dk最大（基準尺寸）*5.578.51013161821最大*5.687.228.7210.2213.2716.2718.2721.335.326.788.289.7812.7315.7317.7320.67da最大3.64.75.76.89.211.213.71

4、5.7ds最大（基準尺寸）34568101214，小2.863.824.825.827.789.7811.7313.73e最小2.873.444.585.726.869.1511.4313.72，大0.510.600.600.681.021.021.451.45k最大（基準尺寸）34568101214最小2.863.824.825.707.649.6411.5713.5710.10.20.20.250.40.40.60.6最小公稱（基準尺寸）2.5345681012最小2.523.024.025.026.028.02510.02512.032最大1欄2欄2.5803.0804.0955.140

5、6.1408.17510.17512.2122.5603.0804.0955.0956.0958.11510.11512.142翱了 H*加工支 倒觸鐵部f僵大）=14僵大）謂小上根翩表的心1最小1.322.534567v0.30.40.50.60.811.21.4dw最小5.076.538.039.3812.3315.3317.2320.17w最小一1.151.41.92.33.344.85.8螺紋的公稱直徑（d） （2）M16(M18)M20(M22)M24(M27)M30螺栓的螺距（P）22.52.52.5333.5b參考44485256606672dk最大（基準尺寸）*24273033

6、364045最大*24.3327.3330.3333.3936.3940.3945.39,小23.6726.6729.6732.6135.6139.6144.61da，大17.720.222.424.426.430.433.4ds最大（基準尺寸）16182022242730,小15.7317.7319.6721.6723.6726.6729.67e16.0016.0019.4419.4421.7321.7325.1511.451.872.042.042.042.892.89k最大（基準尺寸）1618202224273015.5717.5719.4821.4823.4826.4829.48r0.

7、60.60.80.80.811s公稱（基準尺寸）14141717191922、小14.03214.03217.05017.05019.06519.06522.065最大1欄14.21214.21217.23017.23019.27519.27522.2752欄14.14214.142t卜小8910111213.515.5v卜大1.61.822.22.42.73dw最小23.1725.8728.8731.8134.8138.6143.61w、小6.87.78.69.510.412.113.1注：s（最大）的1欄適用于強度8.8及10.9及性狀A2-50、A2-70的內容，2欄適用于強度12.9的

8、內容。但根據雙方當事人之間協議，強度 12.9的內容也可以適用1欄。螺紋的公稱直徑 M20以上的s（最大）適用于所有的強度及性狀內容。注：螺紋的公稱直徑中帶括號的盡量不要使用。 . 、 . . 、一. . . . . . - * . 備汪：1.頭部的側面帶有直紋或網紋參19 JIS B 0951（滾花）。此時，dk（最大）為該表中的帶的數值。止匕外，需要沒有滾花的貨時，訂貨人必須指定。但該 dk（最大）為該表中帶*的數值。2.對于螺紋的公稱直徑建議使用的公稱長度（?）為粗線框內的內容。如果？比虛線位置短的為全螺紋，桿部的不完全螺紋長度約為3P o3.公稱長度 比虛線位置長的話，？g（最大）及？

9、s（最?。└鶕率經Q定。?g（最大戶公稱長度（?）-b?s（最小尸?g（最大）-5P2.內六角螺栓的L和？s及?g單位：mm螺紋的公稱直徑（d）M3M4M5M6M8L?s min. 及？g max.公稱長度minmax?smin?gmax?smin?gmax?smin?gmax?smin?gmax?smin?gmax54.765.2465.766.24187.718.29109.7110.291211.6512.351615.6516.352019.5820.422524.5825.424.573029.5830.429.5126.510483534.535.511.5159136114039

10、.540.516.520141811165.75124544.545.51923162110.75175049.550.52428212615.75225554.455.6263120.75276059.460.6313625.75326564.465.630.75377069.470.635.75428079.480.645.75529089.390.710099.3100.7110109.3110.7120119.3120.7130129.2130.8140139.2140.8150149.2150.8160159.2160.8180179.2180.8200199.05200.95220

11、219.05220.951240239.05240.95260258.95261.05280278.95281.05300298.95301.05螺紋的公稱直徑（d）M10M12(M14)M16(M18)L?s min. 及？g max.公稱長度minmax?smin?gmax?smin?gmax?smin?gmax?smin?gmax?smin?gmax54.765.2465.766.2487.718.29109.7110.291211.6512.351615.6516.352019.5820.422524.5825.423029.5830.423534.535.54039.540.5454

12、4.545.55.5135049.550.510.5185554.455.615.52310.25196059.460.620.52815.252410206564.465.625.53320.2529152511214.5177069.470.630.53825.2534203016269.5228079.480.640.54835.25443040263619.5329089.390.750.55845.25544050364629.54210099.3100.760.56855.25645060465639.552110109.3110.766.25746070566649.562120

13、119.3120.775.25847080667659.572130129.2130.88090768669.582140139.2140.890100869679.592150149.2150.89610689.5102160159.2160.810611699.5112180179.2180.8119.5132200199.05200.95220219.05220.95240239.05240.95260258.95261.05280278.95281.05300298.95301.05螺紋的公稱直徑（d）M20(M22)M24(M27)M30L?s min. 及？g max.公稱長度mi

14、nmax?s?g?s?g?s?g?s?g?s?gminmaxminmaxminmaxminmaxminmax54.765.2465.766.2487.718.29109.7110.291211.6512.3511615.6516.35-2019.5820.422524.5825.423029.5830.4213534.535.5.4039.540.54544.545.55049.550.55554.455.66059.460.66564.465.67069.470.68079.480.615.52811.5249089.390.725.53821.534153092410099.3100.73

15、5.54831.54425401934110109.3110.745.55841.5543550294420.538120119.3120.755.56851.5644560395430.548130129.2130.865.57861.5745570496440.558140139.2140.875.58871.5846580597450.568150149.2150.885.59881.5947590698460.578160159.2160.895.510891.510485100799470.588180179.2180.8115.5128111.51241051209911490.5

16、108200199.05200.95135.5148131.5144125140119134110.5128220219.05220.95139154130.5148240239.05240.95159174150.5168260258.95261.05179194170.5188280278.95281.05199214190.5208300298.95301.05219234210.5228參考：內六角螺栓的沉頭孔及螺栓孔的尺寸單位：mm螺紋 的公稱 直徑(d)M3M4M5M6M8M10M12M14M16M18M20M22M24M27M30ds3456810121416182022242730d?3.44.55.56.6911141618202224263