This standard specifies hexagon nuts designed for use without washers, in assemblies that will be frequently disassembled and reassembled.

This International Standard specifies the conditions for carrying out axial load fatigue tests on threaded fasteners.

1.2.1 This standard recommends Table 1, No. 3 square neck, 80 deg round countersunk head and Table 2, No. 7 reverse key, 60 deg round countersunk head plow bolts for new designs. It includes No. 3 square neck, round countersunk repair head; Table 3, No. 4 countersunk, square repair head; Table 4,...

The following amendments have been made in comparison with the December 1972 edition: a) The dimensions of the wing nuts have been altered in some respects. b) Limiting sizes have been adopted. c) Sizes M 2 to M 3,5 have been deleted. d) The technical delivery conditions have been complemented. e...

1.1 This specification establishes allowable limits for the various types of surface discontinuities that may occur during the manufacture and processing of metric-series nuts with nominal diameters 5 mm and larger and inch-series nuts with nominal diameters 1/4 in. and larger. 1.2 The values sta...

This standard gives specifications for hexagon nuts with flange, with metric coarse or fine thread with diameters from 5 to 20 mm, assigned to product grade A. If, in special cases, nuts are to comply with specifications other than those given in this standard, e.g. regarding property classes, th...