din-937参考标准资料

UDC621.882.32:621.882.082.1December 1983Hexagon thin castle nutsDIN(previous design)937Kronenmuttern,niedrige Form (alte Ausfuhrung)Supersedes December 1978 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.Hexagon castle nuts as specified in this standard should not be used for new designs.It is recommended that hexagoncastle nuts specified in DIN 979 be used instead of hexagon castle nuts in accordance with this standard.For existingdesigns,hexagon castle nuts in accordance with this standard are only interchangeable with hexagon castle nuts speci-fied in DIN 979 for sizes up to 14 mm nominal thread diameter.Dimensions in mm1 Field of applicationThis standard gives specifications for hexagon thin castle nuts with metric threads ranging from 6 to 52 mm nominalthread diameter,assigned to product grades A (up to and including 16 mm nominal thread diameter)and B (above18 mm nominal thread diameter).If,in special cases,nuts are to comply with specifications other than those listed in this standard,e.g.regardingproperty classes,they shall be selected in accordance with the appropriate standards.2 DimensionsUp to and including 10 mmFrom 12 mmnominal thread diameternominal thread diameter15to30°15to30Detail Xr=号m=minimum wrenching heightmOther dimensionsas in figure on the leftThe bottom of the slots may be round,rounded or flat,at manufacturer's discretion.Hexagon thin castle nuts may besupplied with or without a thread in the slotted part,at manufacturer's discretion.The faces of the slotted parts maybe rounded.Continued on pages 2 to 4127