《UN美制螺纹及尺寸》由会员分享，可在线阅读，更多相关《UN美制螺纹及尺寸（22页珍藏版）》请在金锄头文库上搜索。
1、公称 螺纹 牙 牙 螺 公差 螺纹 外径 螺纹 中径 螺纹小径 公差 螺纹 小径 螺纹 中径 螺纹外径 钻孔直径 规格 数 高 距 代号 Max Min Max Min Max 代号 Min Max Min Max Min 直径0.073（ #1） 1-64UNC 64 0.236 0.397 2A 1.83896 1.74244 1.58242 1.53162 1.36652 2B 1.42494 1.58242 1.59766 1.6637 1.8542 1.3971.854 3A 1.8542 1.75768 1.59766 1.55956 1.38176 3B 1.42494 1.58
2、242 1.59766 1.64592 1.8542 1.3971-72UNF 72 0.21 0.353 2A 1.83896 1.75006 1.61036 1.5621 1.41986 2B 1.4732 1.6129 1.6256 1.6891 1.8542 1.51133A 1.8542 1.7653 1.6256 1.59004 1.4351 3B 1.4732 1.6129 1.6256 1.67386 1.8542 1.51130.086(#2) 2-56UNC 56 0.271 0.454 2A 2.16916 2.06502 1.87452 1.82118 1.63068
3、2B 1.69418 1.87198 1.88976 1.96088 2.1844 1.70182.184 3A 2.1844 2.08026 1.88976 1.84912 1.64592 3B 1.69418 1.87198 1.88976 1.9431 2.1844 1.70182-64UNF 64 0.236 0.397 2A 2.16916 2.07264 1.91262 1.86182 1.69672 2B 1.75514 1.91262 1.92786 1.99644 2.1844 1.7783A 2.1844 2.08788 1.92786 1.88976 1.71196 3B
4、 1.75514 1.91262 1.92786 1.97866 2.1844 1.7780.099(3#) 3-48UNC 48 0.315 0.529 2A 2.49682 2.38252 2.15392 2.0955 1.86436 2B 1.94056 2.1463 2.1717 2.2479 2.5146 1.99392.515 3A 2.5146 2.4003 2.1717 2.12852 1.88214 3B 1.94056 2.1463 2.1717 2.22758 2.5146 1.99393-56UNF 56 0.271 0.454 2A 2.49682 2.39268 2
5、.20218 2.1463 1.95834 2B 2.02438 2.1971 2.21996 2.29108 2.5146 2.05743A 2.5146 2.41046 2.21996 2.17932 1.97612 3B 2.02438 2.1971 2.21996 2.2733 2.5146 2.05740.112(#4) 4-40UNC 40 0.378 0.635 2A 2.82448 2.69494 2.413 2.3495 2.06756 2B 2.15646 2.38506 2.43332 2.51714 2.8448 2.18442.845 3A 2.8448 2.7152
6、6 2.43332 2.38506 2.08788 3B 2.15646 2.38506 2.43332 2.49428 2.8448 2.18444-48UNF 48 0.315 0.529 2A 2.82702 2.71272 2.48412 2.42316 2.19456 2B 2.27076 2.45872 2.5019 2.58064 2.8448 2.26063A 2.8448 2.7305 2.5019 2.45618 2.21234 3B 2.27076 2.45872 2.5019 2.56032 2.8448 2.26060.125(#5) 5-40UNC 40 0.378
7、 0.635 2A 3.15468 3.02514 2.7432 2.67716 2.39776 2B 2.48666 2.69748 2.76352 2.84734 3.175 2.52733.175 3A 3.175 3.04546 2.76352 2.71526 2.41808 3B 2.48666 2.69748 2.76352 2.82702 3.175 2.52735-44UNF 44 0.344 0.577 2A 3.15722 3.0353 2.7813 2.7178 2.46888 2B 2.55016 2.74066 2.79908 2.88036 3.175 2.5781
8、3A 3.175 3.05308 2.79908 2.75082 2.48666 3B 2.55016 2.74066 2.54508 2.86004 3.175 2.57810.138(#6 ） 6-32UNC 32 0.472 0.794 2A 3.48488 3.33248 2.96926 2.89814 2.54 2B 2.6416 2.8956 2.98958 3.08356 3.5052 2.70513.505 3A 3.5052 3.3528 2.98958 2.93624 2.56032 3B 2.6416 2.8956 2.98958 3.05816 3.5052 2.705
9、16-40UNF 40 0.378 0.635 2A 3.48488 3.35534 3.0734 3.00736 2.72796 2B 2.8194 3.0226 3.09372 3.18008 3.5052 2.87023A 3.5052 3.37566 3.09372 3.04292 2.74828 3B 2.8194 3.01244 3.09372 3.15722 3.5052 2.87020.164（ #8） 8-32UNC 32 0.472 0.784 2A 4.14274 3.99034 3.62712 3.55346 3.19786 2B 3.302 3.5306 3.6499
10、8 3.7465 4.1656 3.45444.166 3A 4.1656 4.0132 3.64998 3.5941 3.22072 3B 3.302 3.52806 3.64998 3.7211 4.1656 3.45448-36UNF 36 0.421 0.706 2A 4.14528 4.00558 3.68808 3.61696 3.30454 2B 3.4036 3.6068 3.7084 3.79984 4.1656 3.4544UN 美制螺纹尺寸 Unit=mm外螺纹尺寸 内螺纹尺寸3A 4.1656 4.0259 3.7084 3.65506 3.32486 3B 3.403
11、6 3.59664 3.7084 3.77698 4.1656 3.45440.19 （ #10） 10-24UNC 24 0.63 1.058 2A 4.8006 4.61772 4.11226 4.02844 3.54076 2B 3.683 3.9624 4.13766 4.24688 4.826 3.73384.826 3A 4.826 4.64312 4.13766 4.07416 3.56616 3B 3.683 3.9497 4.13766 4.21894 4.826 3.733810-28UNS 28 0.54 0.907 2A 4.8006 4.6355 4.21132 4.
12、1275 3.71856 2B 3.8354 4.064 4.23672 4.34594 4.826 3.860810-32UNF 32 0.472 0.784 2A 4.80314 4.65074 4.28752 4.21132 3.85826 2B 3.9624 4.1656 4.31038 4.40944 4.826 3.98783A 4.826 4.6736 4.31038 4.25196 3.88112 3B 3.9624 4.16814 4.31038 4.38404 4.826 3.987810-36UNS 36 0.421 0.706 2A 4.80314 4.66344 4.
13、34594 4.26974 3.9624 2B 4.064 4.2164 4.3688 4.46786 4.826 4.038610-40UNS 40 0.378 0.635 2A 4.80314 4.6736 4.39166 4.318 4.04368 2B 4.1402 4.2926 4.41452 4.5085 4.826 4.089410-48UNS 48 0.315 0.529 2A 4.80568 4.69138 4.46278 4.39674 4.17576 2B 4.2418 4.3688 4.4831 4.56946 4.826 4.216410-56UNS 56 0.271
14、 0.454 2A 4.80822 4.70408 4.51358 4.45008 4.26974 2B 4.3434 4.445 4.53136 4.61264 4.826 4.30530.216（ #12） 12-24UNC 24 0.63 1.058 2A 5.461 5.27812 4.77266 4.6863 4.20116 2B 4.3434 4.5974 4.79806 4.90982 5.4864 4.49580.486 3A 5.4864 5.30352 4.79806 4.73202 4.22656 3B 4.3434 4.58978 4.79806 4.88188 5.4
15、864 4.495812-28UNF 28 0.54 0.907 2A 5.461 5.2959 4.87172 4.79044 4.37896 2B 4.4958 4.7244 4.89712 5.0038 5.4864 4.5723A 5.4864 5.3213 4.89712 4.83616 4.40436 3B 4.4958 4.71678 4.89712 4.97586 5.4864 4.57212-32UNEF 32 0.472 0.784 2A 5.46354 5.31114 4.94792 4.86918 4.51866 2B 4.6228 4.826 4.97078 5.07
16、492 5.4864 4.5723A 5.4864 5.334 4.97078 4.90982 4.54152 3B 4.6228 4.8133 4.97078 5.04952 5.4864 4.57212-36UNS 36 0.421 0.706 2A 5.46354 5.32384 5.00634 4.93014 4.87934 2B 4.7244 4.8768 5.0292 5.12826 5.4864 4.800612-40UNS 40 0.378 0.635 2A 5.46354 5.334 5.05206 4.9784 4.6609 2B 4.8006 4.953 5.07492 5.1689 5.4864 4.851412-48UNS 48 0.315 0.529 2A 5.46608 5.35178 5.12318 5.05714 4.83616 2B 4.9022 5.0292 5.1435 5.22986 5.4864 4.978412-56UNS 56 0.271 0.454 2A 5.46862 5.36448 5.17398 5.1104
