Package Contents: 25 PCS; Phillips Drive Size: PH3,No.3 (Included) Thread Size: 1/4-20; Thread Pitch: 20 TPI; Head Diameter: 0.47 inch; Screw length: 1.5 inch (measured from the top of the head to the tip) Feature: A flat head is cone shaped for use in countersunk holes and has a flat top that fits flush with the mated surface; Flat head machine screws are commonly used in woodworking, electronics, machinery, and other applications where a flush or countersunk finish is desired Material: The screws are made of 304 stainless steel 18/8; Excellent toughness; Good corrosion resistance; High strength and durability; Heat Resistance Application: It's used for a wide variety of home and commercial applications; Ideal for most furnitures like Beds, Tables, Cabinets, Shelves, Chairs, Closets, Stands, 3D printers and more; They are ideal for joining metal parts or attaching hardware to surface