螺栓和螺钉通孔尺寸（GB/T 52771985）螺纹规格dM1M1.2M1.4M1.6M1.8M2M2.5M3M3.5M4M4.5M5M6M7M8螺纹直径精装配1.11.31.51.722.22.73.23.74.34.85.36.47.48.4中等装配1.21.41.622.12.43.23.43.94.555.56.67.69粗装配1.31.51.82.22.42.63.73.64.24.85.35.86.67.610螺纹规格dM10M12M14M16M18M20M22M24M27M30M33M36M39M42M45螺纹直径精装配10.51315171921232528313437404346中等装配1113.515.517.52022242630333639424548粗装配1214.516.518.52124262832353842454852Ivbd2td3dll.fi3. 31.81.824. 32.32.42.E5. a2.02.036. a3.43.44g. a4.64.E510.05.75.E611.06.8e.e815.09.01018.011. 011. 01220.013. 01613. 51424.015. 01815. 51626.017. 52017. 52033.021. 52422. 02440.025. 52826. 03040.032. a3633. a3657.050. a4239. aM留柱头用沅孔（适用于GBTO）（摘自GB152.3-88 ）单谊;螺级规格d2七*dl1.63.71.01. S24.51. 22.42. 55.51. 52. 936.41. 63.43. 58.42.43. 949.62. 74. 5510. 62. 75. 5612. 63. 36. 6817. 64. 69. 01020. 35. 011. 1224.46. 013. 6142S. 4Y. 015. 51632.4S. 017. 52040.410.032. M六角头螺栓和六角螺母昭沅孔（摘自GB152.4-S8 )单fM20时为A2-50.标记示例：螺纹规格d=M5,公称长度l=20mm,性能等级为8.8级，表面氧化的内六角圆柱头螺钉：螺钉 GB70-85 M5X20螺纹规格dPb参考dk 光滑头部 tnisir jdk滾花头部 (ITi AW lda(max)ds(mas)e (min)k (max)r (min)s （公称）t (min)w (min)嚨围全蹩良最lOOjwKfrl 重电 (kg) Na. 351533. 1421. 61. 731. 60. 11.50. 70. 552. 516160. 00016M2M2. 5M3M4M5M6MSK10K12 伍K16K20K24K30K360.4163. 83. 982. 621. 7320. 11.510. 55320160. 002030. 003290.004920.008840.014300.020S40.03923 . 063SS 0.090340. 13100 . 179600. 29990 0.462650. 798511. 243000.45174. 54. es3. 12. 52. 32. 50. 121. 10. 85425200.5185.55.83. S32.8730. 12.51.31. 15530200.72077.224.743.4440.2321.4250.8228.58.725.7B4. B850.242.51.98-50251241010. 226.865.7260.25532.310-60301.25281313. 279.2S6. S6S0.4643.31280351.5321616. 2711.Z109. 15100.405416100401.7536IS18. 2713.71211.43120.61064.820120452402121. 3315. T1413.72120.61275.S25140552442424. 3317. T1616. 00160. 61486. 825160552. 5523030. 3322.42019.44200. 817108. 630200653603636. 3926.42421. 73240. 8191210.440200803. 5724545. 3933.43025. 153012215. 513. 145200904845454. 4639.43630. 85361271915. 355200110M内六角圄柱头螺钉（擠自GBT0-85等IS04T62-7T ）冒的或平的1、括号内规格尽量不采用。2、材料/力学性能：钢/ 4.8。 标记示例：螺纹规格d=M5,公称长度l=20mm,性能等级为4.8级，不经表面处理的H型十字槽沉头螺钉：螺钉 GB819-85 M5X20螺纹 规格dPa(inaK)b (min)Ik (max)fk (jnaz)r (min.)rf十宇槽 稱号Ro十字槽深度十字槽 磋插入 深度 min十字糟Z型插入 深庫 m歩青十字槽 Z型插 人深度 min1范围（ 商品规 格）全螺纹 时最丸 长度1 OOuun-K 的 丰甲(kg)亠1 MlM2K2.EM3M4M5M6M8MIO0.350.72530.410.430i.e0.61.8. 7316300.00118a. 40.8253. 80. 51.20.5401.90.920.95320300. 00190. 003080.004520.004520.012&60.018530. 034340.05370.450.9254. 70. 6l.E0.6512.91.431.45325300. 51255. 50. 71. 05O.S613.21.73. 21. 64北300. 71.43SS.412.719.524.62.14. 62.055q 口450. 8i.e3S9. 31.22.71.39.525.22.75. 12. 66和45123S11.31.43.31.51236.835. 83860451.252.53S15.B24. 65215. 540.9494. 151060451.533S18.32. 352.519. 54105. 1105. 21260