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1、公称直径d螺距p中径d2=D2大径D4小径第一系列第二系列d3D18-1.5*7.258.36.26.5-91.58.259.37.27.5-92*89.56.5710-1.59.2510.38.28.510-2*910.57.58-112*1011.58.59-1139.511.57.5812-21112.59.51012-3*10.512.58.59-1421314.511.512-143*12.514.510.51116-21516.513.51416-4*1416.511.512-1821718.515.516-184*1618.513.51420-21920.517.51820-4*
2、1820.515.516-22320.522.517.518-225*19.522.516.51724-322.524.520.52124-5*21.524.518.51924-820251516-26324.526.522.523-265*23.526.520.521-2682429192028-326.528.524.52528-5*25.528.522.52328-824291920-30328.530.526.527-306*27312324-30102531192032-330.532.528.52932-6*2933252632-1027332122-34332.534.530.5
3、31-346*31352728-34102935232436-334.536.532.53336-6*3337293036-1031372526-38336.538.534.535-387*34.5393031-38103339272840-336.538.534.535-42340.542.538.539-427*38.5433435-42103743313244-342.544.540.54144-7*40.545363744-1238453132-46344.546.542.543-468*42473738-46124047333448-346.548.544.54548-8*44493
4、94048-1242493536-50348.550.546.547-508*46514142-50124451373852-350.552.548.54952-8*4853434452-1246533940-55553.555.551.552-559*55.5615051-55144857394160-358.560.556.55760-9*55.561505160-1453624446-6546365.560.561-6510*60665455-65165767474970-46870.565.56670-10*6571596070-1662725254-7547375.570.571-7
5、510*70766465-75166777575980-47880.575.57680-10*7581697080-1672826264-8548385.580.581-8512*79867273-85187687656790-48890.585.58690-12*8491777890-1881927072-9549395.590.591-9512*89968283-951886977577100-498100.595.596100-12*941018788100-20901028890-1104108110.5105.5106-11012*1041109798-110201001128890
6、120-6117121113114120-14*113122104106120-221091229698-1306127131123124-13014*123132114116-13022119132106108140-6137141133134140-14*133142124126140-24128142114116-1506147151143144-15016*142152132134-15024138152124126160-6157161153154160-16*152162142144160-28146162130132-1706167171163164-17016*16217215
7、2154-17028156172140142180-8176181171172180-18*171182160162180-28166182150152-1908186191181182-19018*181192170172-19032174192156158200-8196201191192200-18*191202180182200-32184202166168-2108206211201202-21020*200212188190-21036192212172174220-8216221211212220-20*210222198200220-36202222182184-2308226
8、231221222-23020*220232208210-23036212232192194240-8236241231232240-22*229242216218240-36222242202204-25012244251237238-25022*239252226228-25040230252208210260-12254261247248260-22*249262236238260-40240262218220-27012264271257258-27024*258272244246-27040250272228230280-12274281267268280-24*268282254256280-40260282238240-29012284291277278-29024*278292264266-29044268292244246300-12294301287288300-24*288302274276300-442783022542561.优先选用第一直径系列。2.带“*”的螺距为优先选择（摘自GB5796.2-86）3.特殊需要允许选用表中邻近直径对应的螺距。名称 代号 关系式-内外螺纹大径 d、D（公称直径）-螺距 p-牙顶间隙 ac-基本牙型高度 H1 H1 = 0.5p-
