Nkọwapụta ： Hex Head Bolt bụ ụdị ihe eji eme ihe maka ịme njikọta njikọ n'etiti ihe na-eme ka ọ bụrụ ihe eji eme ihe.
Ndị a nwere ezigbo nguzogide kemịkal ma nwee ike ịdị nju. Ogologo si n'okpuru isi. Egwuregwu eri spacing nke mating mmiri. Ngwunye na-adịghị mma bụ ụkpụrụ ụlọ ọrụ;
Ezi na mmezi-ezi eri na-spaced spacte gbochie loosening si vibration; nke ka mma na eriri ahụ, ka mma na-eguzogide ya.
E nwere ụdị nha na nkọwa niile anyị nwere ike iweta, ịnabata ịkpọtụrụ.
