Description: <br>These flat head hex socket screws are made of 10.9 grade alloy steel, which are resistant to rust and corrosion. There are 8 thread lengths for you to choose from, which can be generally used in home and office appliance, machinery, furniture, etc. <br> <br>Features: <br>1. 10.9 grade alloy steel material has good strength of extension and corrosion resistance in many environments. <br>2. Countersunk head enables driving where it doesn't have sufficient space for wrenches. <br>3. Ideal for use in confined areas where the head needs to be flush or below the surface. <br>4. Used for fasteners in home and office appliance, communication equipment, ship assembly or other machinery industry. <br>5. Screws with 8 common thread lengths are well packed in 8 compartments and assorted in a transparent plastic box for convenient use and storage. <br> <br>Specifications: <br>Material: 10.9 Grade Alloy Steel <br>Color: Black <br>Thread Lengths: 4mm(30Pcs), 6mm(30Pcs), 8mm(30Pcs), 10mm(30Pcs), 12mm(20Pcs), 16mm(20Pcs), 20mm(20Pcs), 25mm(20Pcs) <br>Thread Diameter: 3mm (M3) <br>Box Size: 13 * 6.5 * 2.3cm / 5 * 2.6 * 0.9inch <br>Quantity: 1 x Box of 200Pcs Screws <br>Package Weight: 138g <br>Type: Flat Head Hex Socket Screw <br>Function: Fastener <br> <br>Package Includes: <br>1 x Box of 200Pcs Screws<br>1、10.9 grade alloy steel material has good strength of extension and corrosion resistance in many environments <br>2、Countersunk head enables driving where it doesn't have sufficient space for wrenches <br>3、Ideal for use in confined areas where the head needs to be flush or below the surface <br>4、Used for fasteners in home and office appliance, communication equipment, ship assembly or other machinery industry <br>5、Screws with 8 common thread lengths are well packed in 8 compartments and assorted in a transparent plastic box for convenient use and storage