108-pieces Machine Screws Nut & Bolt Assortment, Slotted, Round Head Screws. Enjoy the Handy Machine screws Assortment a variety of Commonly-used sizes screws to suit your needs for different projects. Round Heads, Slotted drive use, Steel construction Zinc-plated, Ideal for machinery, furniture, repairs and DIY inventions. Machine screws are used for fastening materials together by going into a tapped hole or through a hole and being held by a nut. Kit contains: Round Head Machine Screws #8-32 x 1/2", 3/4 #10-24 x 1, 1-1/2, 1/4-20 x 1-1/12, 2, Nuts and Washers(108 pieces). Great kit for home, garage, and work, Comes in a handy container fits neatly in kitchen and office drawers, Hardware and Craft Cabinet.