DIN_571相关标准规范

UDC621.882.241December 1986丽Hexagon head wood screws571Sechskant-Holzschrauben mit SchlitzSupersedes March 1975 editionIn keeping with current practice in standards published by the International Organization for Standardization (ISO).a comma has been used throughout as the decimal marker.1 DimensionsDimensions in mmRecess resultingfrom pressingprocessb≥0,61permittedThread size56710121620max.nominal size6⊙10121620min.3,524,525.526.427.429.4211.315.319,3da max.567.28.210,212,215,219.224.4Nominal size2.83.5455.5781013max.3.13.884.385.385.887.458,4510.4513.90min.2.53.133,634.635.136.557.559,5512.1Nominal size7.810121317192430max.7610121317192430min.6.647.649.6411.5712.5716.5718.4823.1629.16e min.7.508.6310.8913,0714,218.7220.8826.1732.951NominalMass (7,85 kg/dm3),in kg per 1000 units,approximatelysizemin.ma光.1615.116.91.712.922018.9521.052,013.425.022523.9526.052,414.025,8211.53028.9531.052,814.626.6212.923.63533.7536,253.115.127.4214225.836,24038.7541.253,515,828.2215.628.039,24543.7546.256,438.9416.930.042.15048,7551.257.039.6418.232.145.484.15553.556.510.519.634.348.689,76058.561.511,220,936,551.894.91656563.566.522,238,554.799.51747068.571.523.640757.81071827573.576.525.042.961.01121928078,581.526,545,264.51182019088.2591,7529,449.971.013022010098,25101.7532.054.077.1141238110108.25111.7583.4152253120118.25121.7589.5163275130128.0132.0175293140138.0142.0187317150148.0152.0198328160158.0162.0209348170168.0172.0366180178.0182.0385190187.7192.3404200197.7202.3421Lengths above 200 mm shall be graded in 20 mm steps.Bracketed sizes shall be avoided if possible.Wood screws are normally manufactured in sizes for which mass values have been specified.These values are for guidance only.Continued on page 274