DIN EN 14399-10-2009 预压高强度结构螺栓组件.第10部分:系统HRC.螺栓和螺母预校准组件.英文版本DIN EN 14399-10-2009-07
High-strength structural bolting assemblies for preloading - Part 10: System HRC - Bolt and nut assemblies with calibrated preload; English version of DIN EN 14399-10:2009-07
This part of this European Standard specifies, together with EN 14399-1, the requirements for assemblies of
high-strength structural bolts and nuts of system HRC suitable for preloaded joints, with hexagon head (large
widths across flats) or cup head, thread sizes M12 to M30 and property class 10.9/10.
Bolt and nut assemblies conforming to this part of this European Standard have been designed to allow
preloading of at least 0,7fubx As according to EN 1993-1-8:2005 (Eurocode 3) and to obtain ductility
predominantly by plastic elongation of the bolt. For this purpose the components have the following
characteristics:
-- nut according to EN 14399-3, or
nut with height m = 1 d,
-- thread length of the bolt according to ISO 888.
Bolt and nut assemblies conforming to this part of this European Standard include washer(s) according to
EN 14399-6 or to EN 14399-5 (under the nut only).
NOTE Attention is drawn to the importance of ensuring that the bolts are correctly used if a satisfactory result is to be obtained.
The test method for suitability for preloading is specified in EN 14399-2 and in Clause 8.