GZGNPT螺纹基本尺寸六方制作

1、圆柱管螺纹基本尺寸圆柱管螺纹的公差尺寸代号每25. 4m螺距牙咼圆弧基本直径外螺内螺m内的牙数Ph半径纹纹n/mm/mmr大径中小径大径小径/mmd=D径di=D公差公差/mmd2=D/mmTdTD2下偏上偏/mm差差/mm/mm1/1280. 900. 580. 127. 7236. 561-0.21+0. 286715421/8280. 900. 580. 129. 7288. 566-0.21+0. 28715421/4191. 330. 850. 1813. 15711.445-0. 25+0. 44764053/8191. 330. 850. 1816. 66214. 950-0.

2、25+0. 44764051/2141.811. 160. 2420. 95518. 631-0. 28+0. 54429415/8141.811. 160. 2422.91120. 587-0. 28+0. 54429413/4141.811. 160. 2426. 44124. 117-0. 28+0. 54429417/8141.811. 160. 2430. 20127. 877-0. 28+0. 54429411112. 301.470.3133. 24930. 291-0. 36+0. 6499700l1/3112. 301.470.3137. 89734. 939-0. 36+0

3、. 6499700rA112. 301.470.3141.91038. 952-0. 36+0. 6499700l1/2112. 301.470.3147. 80344. 845-0. 36+0. 649970017.112. 301.470.3153. 74650. 788-0. 36+0. 64997002112. 301.470.3159.61456. 656-0. 36+0. 649970027 4112. 301.470.3165. 71062. 752-0. 43+0. 6499740272112. 301.470.3175. 18472. 226-0. 43+0. 6499740

4、271112. 301.470.3181.53478. 576-0. 43+0. 64997403112. 301.470.3187. 88484. 926-0. 43+0. 64圆锥管螺纹的基本尺寸99740372112. 301.470.31100. 3897. 372-0. 43+0. 649970404112. 301.470.31113.03110. 07-0. 43+0. 64997024047 2112. 301.470.31125.73122. 77-0. 43+0. 6499702405112. 301.470.31138.43135. 47-0. 43+0. 6499702

5、405?2112. 301.470.31151. 13148. 17-0. 43+0. 6499702406112. 301.470.31163. 83160. 87-0. 43+0. 649970240距牙咼h/mm圆弧半径r/mm基面上的直径有效螺纹长度/mm基准长度圆锥内螺 纹基面轴 向位移的 极限偏差 t2/2装配余量大径d=D/mm中径d?=D/mm小径 di=Di /mm基本/mm极限偏差 t72最大/mm最小/mm/mm圈数/mm圈数/mm圈数70. 5810. 1257. 7237. 1426. 5616. 54.00.914.93. 11. 11742.52770. 5810

6、. 1259. 7289. 1478. 5666. 54.00.914.93. 11. 11742.52770. 8760. 18413. 15712. 30111.4459. 76.01.317.34.71. 71743.72770. 8560. 18416. 66215. 80614. 95010. 16.41.317.75. 11. 71743.72741. 1620. 24920. 95519. 79318. 63113.28.21.8110.06.42.31745.02741. 1620. 24926. 44125. 27924. 11714.59.51.8111. 37.72. 3

7、1745.02791.4790.31733. 24931.77030. 29116.810.42.3112.78. 12.91746.42791.4790.31741.91040. 43138. 95219. 112. 72.3115.010.42.91746.42791.4790.31747. 80346. 32444. 84519. 112. 72.3115.010.42.91746.42791.4790.31759. 61458.13556. 65623.415.92.3118.213.62.91747.53791.4790.31775. 18473. 70572. 22626.717.

8、53.517 221.014.03.5I1/29.2491.4790.31787. 88486. 40584. 92629.820.63.5I1/224. 117. 13.5I1/29.2491.4790.317100.33098. 85197. 37231.422.23.517 225.718.73.5I1/29.2491.4790.317113. 030111.551110. 07235.825.43.51%28.921.93.5I1/210.44791.4790.317138.430136. 951135. 47240. 128.63.517232. 125. 13.517211. 55

9、91.4790.317163. 830162. 351160. 87240. 128.63.517 232. 125. 13.5I1/211. 55圆锥外螺纹与圆锥内螺纹和圆柱内螺纹两种联接形式。构无螺尾时（空刀槽），有效螺纹长度不应小于表中最小值得 0.8倍。配合的圆柱内螺纹，其各直径的极限偏差均为圆锥内螺纹基准面轴向位移的1/162的螺纹，限用于蒸汽机车。60o圆锥管螺纹的基本尺寸（NPT螺纹的尺寸代每 25. 4mm基本上的基本直径基准距离装配余量号内的螺纹大径中径小径LLs牙数（基准直d?=Ddi=Din径）/mm/mm/mm牙数/mm牙数d=D/mm1/16277.8956. 389

10、4. 0644. 322. 82231/82710. 2428. 7364. 1024. 362. 82231/41813.61611. 3585. 7864. 104. 23433/81817. 05514. 7976. 0964. 324. 23431/21421.2231& 3218. 1284. 485. 44333/41426. 56823. 6668.6114. 755. 4433111. 533. 22829. 69410. 1604. 606. 62731%11. 541.9853& 45110. 6684. 836. 6273I1/211.548. 05444. 52010. 6684. 836. 6273211. 560. 09256. 55811.0745.016. 6273272872. 69967.61917.3235. 466. 35023888. 60883. 52819.4566. 136. 35023728101.31696. 23620. 8536. 576. 350248113.973108.89321.4386. 756. 350258140. 952135.