型号：平头螺丝 Machine Screws/Flat Head		型号：自攻螺丝 Self-Tapping Screws
型号：内六角螺丝 Socket Head Screws		型号：带垫片螺丝 Machine Screws/Self-Tapping
型号：半圆头螺丝 Machine Screws\Round Head		型号：机米 Set Screws
型号：螺母、自锁螺母 Hexagon Nuts		型号：卡簧 Washers