Patent ID: 6174117
Filing Date: 2001-01-16
Classification: B23P,F16B,F16D

Abstract:
A fastening structure comprising a bolt having a larger outer diameter portion extending in an axial direction of the bolt, a serration provided on an outer peripheral surface of the larger outer diameter portion, and a smaller outer diameter portion provided with a threaded portion,said bolt being press-fit into a bolthole formed in a metal flange portion of a disc rotor and a wheel mounting member,wherein a first distance is defined between an axial end portion of the serration and one end surface of the metal flange portion, and the first distance exceeds 13% of a thickness of the steel flange portion in the axial direction, andwherein a second distance is defined between the other axial end portion of the serration and the other end surface of the metal flange portion of the disc rotor, and the second axial distance exceeds 13% of the thickness of the metal flange portion in the axial direction.