Class 14.9 high-strength hexagon socket head cap screw

developed by Kyokuto Seisakusho Co., Ltd., which has high technical capabilities

Tensile strength: 1,400Mpa

Guaranteed load stress: 1,120Mpa

High strength： Under the premise of ensuring the tensile strength of 1,400Mpa, the elongation rate of more than 9% can be  achieved, and the same toughness of 10.9 grade can be achieved.

Fatigue resistance： [Aerospace MJ thread] is adopted to provide fatigue resistance.

High temperature resistance： 83% of the tensile strength can be maintained in an environment of 400 degrees.

Hardness： HRC44～50

Dimensions： JIS B1176 (except for the lower part of the neck)

Screw Specification: ISO5855-1 MJ screw (for aerospace)

Screw accuracy: ISO5955-1, 4 g6g

Surface treatment: Blackening  and delta-protected coat (clear 1000 hours or longer in the salt spray test)