To speedily position a fastener correctly to a guide for holding a fastener inside the mold of a molding subject in the preparation step in the insert-molding process.

The fastener positioning member 70 comprises a first and a second hooking parts 72 and 74 to be hooked to the base parts 14 of a pair of fasteners 10, and an engaging part 76 to be engaged with a guide 12. The first hooking part 72 has a first slit 80 extending in a first direction for hooking and holding a post 42 on the rear surface 32 of the base part of one faster 10, and the second hooking part 74 has two second slits 82 extending in a second direction substantially orthogonally crossing the first direction for hooking and holding two posts 42 on the rear surface 32 of the base part of the another faster 10. The fastener positioning member 70 enables the fasteners 10 to be connected to each other in the relative positions extending in the directions orthogonally crossing each other and to be speedily and easily attached to a pair of guides disposed in the corresponding relative positions.