This Japanese Industrial Standard specifies the stress area of metric screw thread and the area of the part where a load due to the contact of the bearing surface of threaded fastener and the other side is added, hereinafter referred to as the ”load area”. Furthermore, the method to obtain the s...

1.1 This specification covers the basic requirements for three grades of chromium/zinc inorganic coatings for threaded fasteners. 1.2 These coatings are applied by conventional dip-spin or dip-drain methods. 1.3 The coating process does not induce hydrogen embrittlement, providing that the fasten...

Introduction This Japanese Industrial Standard has been prepared based on ISO 4026, ISO 4027, ISO 4028 and ISO 4029 published in 1993 as the 2nd edition, without alteration in the technical contents with respect to the corresponding parts (quality, shape and dimensions). However, items which are ...

This standard specifies M8 to M100 x 6 T-head bolts. They are designed for use in attaching components to foundations or similar structures by means of T-sIots, such as are specified in DIN 649, where T-head bolts are considered adequate detachable fasteners.

This International Standard specifies the characteristics of hexagon bolts with flange, small series, with product grade A, with threads from M5 up to and including M16 and property classes 8.8, 9.8, 10.9 and A2-70.

In previous editions of this standard, thread sizes 2,4 and 2,7 were included. In the March 1975 edition of this standard, these sizes were excluded from use in new designs. Because of the continued presence of existing drawings and documents, these sizes may temporarily continue to be ordered wi...