Bolts and screws with external hexalobular driving feature with small flange
|Publication Date:||1 November 2016|
|ICS Code (Bolts, screws, studs):||21.060.10|
This standard specifies dimensions and technical delivery conditions for M4 to M20 coarse and fine pitch thread hexalobular head bolts with small flange, of property classes 8.8 and 10.9 for steel and A2-70 and A4-70 for stainless steel, in product grades A and B.
Specifications for gauging the hexalobular head are given in Annex A.