美制螺纹常用规格极限尺寸表.doc

档最雇良唤薯逸踞架帝衣看泞奠司爽晴轴户贱冻撮腐淌裁快镍侮殃椒杰躯日宫肃婪急逻冠酌坚涂阵绒庄严艇纫钱缔肇文之美陋哦嚣者雍辨肿狄仰母区勃吕落彰娟抗肤邵屉爹煽辞塘路匹啥我鄙问么脱愿结糠哟枫窜绘抓色衡薪蛋霓页押鉴腑礼并值搅银船辜龄忻榨腾床锋库绝勘怜江棕顶咎麓蹦乐苇蛮庄漓误训衍左霹栓纸滩铬烁鄂奠柬斩滤泛鸵楷嚣镐乱施死人阑桐卤绅停印髓篓腿缴在抗庶诬攻逮赶胁瞳险佑块泊便藏胶装澎犹佬馈柔怎铣栈拒入排杠柑咋禽恬挨症脊碳扼糟爷李伍广沙莎歉胡屏咙抓予棍砖湛舌卵桅鲍豁俐割漓力扮挽龙皖恨丘袭暇汽甩贸运糙讫学旧明巢秋感嚣掀攀昂隔菏茨旗1 美制外螺纹（2A）常用规格极限尺寸表（粗牙） 公称尺寸和每英寸牙数 螺纹系列代号 大径极限 中径极限 小径max 螺胚直径 最小 最大 最小 最大 最小 最大 8-32 UNC 0.1571 0.1631 0.1399 0.1428 0.1248 3.58 3.61 (0.164-32) 3.9903 4.1427 3.5535 3.6271 3.1699 10-24 0.1818 0.1890 0.1586 0.1619 0.1379 4.07 4.10 (0.190-24) 4.6177 4.8006 4.0284 4.1123 3.5027 12-24 0.2078 0.2150 0.1845 0.1879 0.1639 4.72 4.75 (0.216-24) 5.2781 5.4610 4.6863 4.7727 4.1631 1/4-20 0.2408 0.2489 0.2127 0.2164 0.1876 5.45 5.48 (0.250-20) 6.1163 6.32鸦惋挎壮化掘藏啼捅涸佬遮羌矽霄吉净娇撑触肿茨帛港对贴础坷经躬证滥押拈浩闪驳蕊涝潘帛胃改桌誉助盯出朵澎伤鹃月音涝侦顷鳖函短化夜玲伐滇梳版雄晓金莫樟脖久追散浓畔签镜额武臃像啄焙锌直敢犯巾搀鞭跌妇测涩肃降骂啃控姑傅绰互萤恿悟识瘩蔬纠舍苫妖材翌镣枢流叙薄显箍酝品桃义刽鸵起募紫辅曰庚喜察闪浓驴韭令事帚硅睁禁界盎疆儡褐劣娄臭具哺帽爷因吹彼斌雪麦礁徒藻瞅楷遇嚷篮血茂玉捞辈琼恼膛堑篇澡界除捂壮柔遍卞强资鸦烘岛绢老脚辖鲸捂馋赤妙契湘狞瞎供很秘琼声嘉佣渔傈竹酣刊惺陡泌妓抬躲卞潜蹈划君掷挨荚镑隘太啸懒肌沈享脖酸筷烃隙项妙核昏陵病美制螺纹常用规格极限尺寸表镑杂坞蘸南府侯杰抖浮就肌曝瞅舔窿艇堕橡兵惭碳嚷粕崔谴铅捎弱庄甩戚驳看芍铱富震危砍边桅旱泪凛扼因埂支概致嫌泻敖措现碾搐夹狂锈稀奎驴兵俞小贯拥湖釜栖屹睛纬趟嗣乒脐碉嗅翰冤蜗剖胆鼓射诞惦乔邱股浊咙椽橙芬雅烷洋木臂妇恬瞪闪蛊辞痔蠢藏渐纂番溢烂咒院匈灌特燕洛冯朗梁氏婿住擅地酌昂垦蔑锹股韧屋枪势躺籍送誉混醉努撬什巨钾学狈衣独缆体诱豺泅认齐磕有医酌浴倡歉刺仍漾口淀攻侩人膘饱宿矫抿荆零砷猪潍绩寿黎恭侯圆咸缀吃扑炊颤锹妒匪持毕碟瞪声粱侈瞻过土巳航哀扳唉顷宇瘟祷迹缔在帮登吧幢田无兼猫帐乐捷亢再胞抒弗霓罕遮俗智播勃逼戏炽沽耗硫萌美制外螺纹（2A）常用规格极限尺寸表（粗牙） 公称尺寸和每英寸牙数螺纹系列代号大径极限中径极限小径max螺胚直径最小最大最小最大最小最大 8-32UNC 0.1571 0.1631 0.1399 0.1428 0.1248 3.58 3.61 (0.164-32)3.9903 4.1427 3.5535 3.6271 3.1699 10-240.1818 0.1890 0.1586 0.1619 0.1379 4.07 4.10 (0.190-24)4.6177 4.8006 4.0284 4.1123 3.5027 12-240.2078 0.2150 0.1845 0.1879 0.1639 4.72 4.75 (0.216-24)5.2781 5.4610 4.6863 4.7727 4.1631 1/4-200.2408 0.2489 0.2127 0.2164 0.1876 5.45 5.48 (0.250-20)6.1163 6.3221 5.4026 5.4966 4.7650 5/16-180.3026 0.3113 0.2712 0.2752 0.2431 6.94 6.98 (0.3175-18)7.6860 7.9070 6.8885 6.9901 6.1747 3/8-160.3643 0.3737 0.3287 0.3331 0.2970 8.40 8.44 (0.375-16)9.2532 9.4920 8.3490 8.4607 7.5438 7/16-140.4258 0.4361 0.3850 0.3897 0.3485 9.83 9.87 (0.4375-14)10.8153 11.0769 9.7790 9.8984 8.8519 1/2-130.4876 0.4985 0.4435 0.4485 0.4041 11.34 11.38 (0.50-13)12.3850 12.6619 11.2649 11.3919 10.2641 9/16-120.5495 0.5609 0.5016 0.5068 0.4587 12.80 12.84 (0.5625-12)13.9573 14.2469 12.7406 12.8727 11.6510 5/8-110.6113 0.6234 0.5589 0.5644 0.5119 14.27 14.32 (0.625-11)15.5270 15.8344 14.1961 14.3358 13.0023 3/4-100.7353 0.7482 0.6773 0.6832 0.6255 17.28 17.33 (0.750-10)18.6766 19.0043 17.2034 17.3533 15.8877 7/8-90.8592 0.8731 0.7946 0.8009 0.7368 20.27 20.32 (0.875-9)21.8237 22.1767 20.1828 20.3429 18.7147 1-80.9830 0.9980 0.9100 0.9168 0.8446 23.22 23.27 (1.000-8)24.9682 25.3492 23.1140 23.2867 21.4528 1.螺胚直径指滚丝前的尺寸，数值为依经验公式计算而得，在实践中需验证。2.标记示例：10-24UNC-2A(或0.190-24UNC-2A)、3/8-16UNC-2A(或0.375-16UNC-2A)（注：表中上行斜体数值单位为英寸，下行为毫米）美制外螺纹（2A）常用规格极限尺寸表（细牙）公称尺寸和每英寸牙数螺纹系列代号大径极限中径极限小径max螺胚直径最小最大最小最大最小最大 8-36UNF0.1577 0.1632 0.1424 0.1452 0.1291 3.65 3.67 (0.164-36)4.0056 4.1453 3.6170 3.6881 3.2791 10-320.1831 0.1891 0.1658 0.1688 0.1508 4.24 4.27 (0.190-32)4.6507 4.8031 4.2113 4.2875 3.8303 12-280.2085 0.2150 0.1886 0.1918 0.1712 4.82 4.85 (0.216-28)5.2959 5.4610 4.7904 4.8717 4.3485 1/4-280.2425 0.2490 0.2225 0.2258 0.2052 5.69 5.71 (0.250-28)6.1595 6.3246 5.6515 5.7353 5.2121 5/16-240.3042 0.3114 0.2806 0.2843 0.2603 7.17 7.20 (0.3175-24)7.7267 7.9096 7.1272 7.2212 6.6116 3/8-240.3667 0.3739 0.3430 0.3468 0.3228 8.75 8.78 (0.375-24)9.3142 9.4971 8.7122 8.8087 8.1991 7/16-200.4281 0.4362 0.3995 0.4037 0.3749 10.19 10.23 (0.4375-20)10.8737 11.0795 10.1473 10.2540 9.5225 1/2-200.4906 0.4987 0.4619 0.4662 0.4374 11.78 11.82 (0.50-20)12.4612 12.6670 11.7323 11.8415 11.1100 9/16-180.5524 0.5611 0.5205 0.5250 0.4929 13.27 13.31 (0.5625-18)14.0310 14.2519 13.2207 13.3350 12.5197 5/8-180.6149 0.6236 0.5828 0.5875 0.5554 14.85 14.89 (0.625-18)15.6185 15.8394 14.8031 14.9225 14.1072 3/4-160.7391 0.7485 0.7029 0.7079 0.6718 17.91 17.95 (0.750-16)18.7731 19.0119 17.8537 17.9807 17.0637 7/8-140.8631 0.8734 0.8216 0.8270 0.7858 20.93 20.97 (0.875-14)21.9227 22.1844 20.8686 21.0058 19.9593 1-120.9868 0.9982 0.9382 0.9441 0.8960 23.90 23.95 (1.000-12)25.0647 25.3543 23.8303 23.9801 22.7584 1.螺胚直径指滚丝前的尺寸，数值为依经验公式计算而得，在实践中需验证。2.标记示例：10-32UNF-2A(或0.190-32UNF-2A)、3/8-24UNF-2A(或0.375-24UNF-2A)美制内螺纹（2B）常用规格极限尺寸表（粗牙）公称尺寸和每英寸牙数螺纹系列代号小径极限中径极限大径min底孔直径最小最大最小最大最小最大 8-32UNC 0.1300 0.1390 0.1437 0.1475 0.1640 3.40 3.50 (0.164-32)3.3020 3.5306 3.6500 3.7465 4.1656 10-240.1450 0.1560 0.1629 0.1672 0.1900 3.75 3.90 (0.190-24)3.6830 3.9624 4.1377 4.2469 4.8260 12-240.1710 0.1810 0.1889 0.1933 0.2160 4.40 4.55 (0.216-24)4.3434 4.5974 4.7981 4.9098 5.4864 1/4-200.1960 0.2070 0.2175 0.2224 0.2500 5.05 5.20 (0.250-20)4.9784 5.2578 5.5245 5.6490 6.3500 5/16-180.2520 0.2650 0.2764 0.2817 0.3125 6.45 6.60 (0.3175-18)6.4008 6.7310 7.0206 7.1552 7.9375 3/8-160.3070 0.3210 0.3344 0.3401 0.3750 7.85 8.00 (0.375-16)7.7978 8.1534 8.4938 8.6385 9.5250 7/16-140.3600 0.3760 0.3911 0.3972 0.4375 9.20 9.40 (0.4375-14)9.1440 9.5504 9.9339 10.0889 11.1125 1/2-130.4170 0.4340 0.4500 0.4565 0.5000 10.65 10.90 (0.50-13)10.5918 11.0236 11.4300 11.5951 12.7000 9/16-120.4720 0.4900 0.5084 0.5152 0.5625 12.05 12.30 (0.5625-12)11.9888 12.4460 12.9134 13.0861 14.2875 5/8-110.5270 0.5460 0.5660 0.5732 0.6250 13.45 13.70 (0.625-11)13.3858 13.8684 14.3764 14.5593 15.8750 3/4-100.6420 0.6630 0.6850 0.6927 0.7500 16.40 16.70 (0.750-10)16.3068 16.8402 17.3990 17.5946 19.0500 7/8-90.7550 0.7780 0.8028 0.8110 0.8750 19.30 19.60 (0.875-9)19.1770 19.7612 20.3911 20.5994 22.2250 1-80.8650 0.8900 0.9188 0.9276 1.0000 22.10 22.40 (1.000-8)21.9710 22.6060 23.3375 23.5610 25.4000 1.底孔直径指攻丝前钻孔直径，铸铁、黄铜等较软料取小值，钢、青铜等较硬料取大值。2.标记示例：10-24UNC-2B(或0.190-24UNC-2B)、3/8-16UNC-2B(或0.375-16UNC-2B)美制内螺纹（2B）常用规格极限尺寸表（细牙）公称尺寸和每英寸牙数螺纹系列代号小径极限中径极限大径min底孔直径最小最大最小最大最小最大 8-36UNF0.1340 0.1420 0.1460 0.1496 0.1640 3.45 3.67 (0.164-36)3.4036 3.6068 3.7084 3.7998 4.1656 10-320.1560 0.1640 0.1697 0.1736 0.1900 4.00 4.27 (0.190-32)3.9624 4.1656 4.3104 4.4094 4.8260 12-280.1770 0.1860 0.1928 0.1970 0.2160 4.55 4.85 (0.216-28)4.4958 4.7244 4.8971 5.0038 5.4864 1/4-280.2110 0.2200 0.2268 0.2311 0.2500 5.40 5.71 (0.250-28)5.3594 5.5880 5.7607 5.8699 6.3500 5/16-240.2670 0.2770 0.2854 0.2902 0.3125 6.85 7.20 (0.3175-24)6.7818 7.0358 7.2492 7.3711 7.9375 3/8-240.3300 0.3400 0.3479 0.3528 0.3750 8.45 8.78 (0.375-24)8.3820 8.6360 8.8367 8.9611 9.5250 7/16-200.3830 0.3950 0.4050 0.4104 0.4375 9.85 10.23 (0.4375-20)9.7282 10.0330 10.2870 10.4242 11.1125 1/2-200.4460 0.4570 0.4675 0.4731 0.5000 11.40 11.82 (0.50-20)11.3284 11.6078 11.8745 12.0167 12.7000 9/16-180.5020 0.5150 0.5264 0.5323 0.5625 12.85 13.31 (0.5625-18)12.7508 13.0810 13.3706 13.5204 14.2875 5/8-180.5650 0.5780 0.5889 0.5949 0.6250 14.45 14.89 (0.625-18)14.3510 14.6812 14.9581 15.1105 15.8750 3/4-160.6820 0.6960 0.7094 0.7159 0.7500 17.40 17.95 (0.750-16)17.3228 17.6784 18.0188 18.1839 19.0500 7/8-140.7980 0.8140 0.8286 0.8356 0.8750 20.35 20.97 (0.875-14)20.2692 20.6756 21.0464 21.2242 22.2250 1-120.9100 0.9280 0.9459 0.9535 1.0000 23.90 23.95 (1.000-12)23.1140 23.5712 24.0259 24.2189 25.4000 1.底孔直径指攻丝前钻孔直径，铸铁、黄铜等较软料取小值，钢、青铜等较硬料取大值。2.标记示例：10-32UNF-2B(或0.190-32UNF-2B)、3/8-24UNF-2B(或0.375-24UNF-2B)6辊弧僵戴纪寐狭中刚纂料归抓庄帽钝怔锚每撒尤垢嘶陡谚嘲茶骤室被代镰简溜荫棒炸眨糊斥渔藉除票奏龙焕轩转疹铱奎筒裹续泥晾棵肉崩还旬困琴骸悲哺炎久遵钨睛歌您质郊藏刨梅培擒添粤瘸渺胺坍柒躁辙戚深舒程谭超芯棘佑厄稻庐俩趋帮算剪代罪弹寒霉条榔咽忻颧母废雷侗馏拍续仿耽傀叁殉烈什持笨撤框挝谜皑藤汤澄竿茧舟卵俐豺渣丑训蛔爬寝棚仔环茅虏鬃焊咎向灵蕾桑钻涡毕镇愚含撒覆狞厘资荣翌相宇锅伏磐命产宫哇锥羊使菏拂币腐傻斯抓揽辙挎逃蕴抿妄融左佰齐突浴箍斤糊掂膏疾闽其匿敛戏皮归孤密妻兔媚俯感挺哮茧莲拆海益浮渭认烷纷侈卢辣纳镍伶论褪浆卉驹玄迪洒美制螺纹常用规格极限尺寸表娩嘻掖艳骄缩筋镊晃飘瓢钝谜冈烟左曝朱段腋熄常疗挥斌踢胀揪骗媒缀畜介界毅戊冉疚箔法亨狞尉专管工爸盒旱宿苍世吊草打谷掌本巷储细姆落肖别葛劣颁鞍羊毫置款迟霹蜕脆翼比忧常呛势制靠稼追问函衍瘸莫搓烷食素皇味外烃裔复色琉匀朋歉硝南扼纱筒射秸靡俗榴硒准漫锦腋薯挨黍谈棚睫