各种不锈钢.铜.铁制螺母.国标螺母,英制螺母,美制螺母,防松螺母,碟形螺母,盖母,法兰螺母,K型螺母六角螺母常用规格:M2M2.5M2.6M3M3.5M4M5M6M7M8M10M12M14M16M18M20M22M24M27M30英制螺母常用规格:5/323/161/45/163/87/161/25/83/47/81防松螺母常用规格:M2M2.5M3M4M5M6M8M10M12M16M18M20M22M24碟形螺母常用规格:M4M5M6M8M10M12盖母常用规格:M4M5M6M7M8M10M12M14M16M18M20法兰螺母常用规格:M3M4M5M6M8M10M12M16K型螺母常用规格:M3M4M5M6M8M10)