HB7595—2011 General specification for nuts, self-locking, with maximum operating temperature less than or equal to 425 ℃

1)Industry standard of aviation

Axial loading testing, testing for screwing up capacity of nut, testing for wreching capacity of nut, testing for brittlement under loading of nut and locking moment, permanent deformation testing, carried out according HB7595—2011. HB7595—2011, locking capacity testing for MJ screw threat of self-locking nut.

2)There is locking structure with nut, nut is repeatedly used after uninstall for several times. After taking prescriptive locking moment, there is no damaging, cracking, decorticating, permanent deformation, new nut should be screwed up to fasten position.

3)Heng Rui Jin Recommending:

XLW-20Nm microsoft computer controlling testing machine for fastening capacity of self-locking nut

XLM—100Nm microsoft computer controlling testing machine for fastening capacity of self-locking nut

XLM—200NM microsoft computer controlling testing machine for fastening capacity of self-locking nut.