Silicon Bronze Slotted Flat Head Machine Screws Alloy 651 Silicon Bronze for excellent corrosion resistanceASME Standards specificCountersunk head that runs flush with application surfaceDriven with a slotted / flat head screwdriver or bitUsed in marine, corrosive and high heat environmentsOften used in plumbing and electrical applications Countersunk Flat Head Machine Screws with a Slotted Drive. These screws are installed with flat or slotted screwdriver. Flat Head Machine Screws feature a countersunk head that runs flush with the application surface. WARNING: This product can expose you to chemicals such as nickel, lead, or chromium, which are known to the State of California to cause cancer and birth defects or other reproductive harm. For more information go to www.P65Warnings.ca.gov Note: All Silicon Bronze products will develop a patina based on the environment and time. These fasteners are not coated with any sealants to prevent a patina from forming. Depending on when the product was manufactured, you may receive a product that has started to develop a patina. Product Specifications: Fastener Type: Machine ScrewMaterial: Silicon BronzeHead Style: FlatHead Diameter: Max 0.762 - Min 0.685Head Height: Max 0.230 - Min 0.200 Countersink: 82 DegreesDrive Style: SlottedThread Size: 3/8"-16Thread Diameter: Max 0.3737 - Min 0.3643 Thread Pitch: 16 Per InchThread Type: UNC (Coarse) Silicon Bronze Slotted Flat Head Machine Screws Alloy 651 Silicon Bronze Slotted Flat Head Machine Screws, Also known as Stove Bolts in this selection are made from silicon bronze. Silicon bronze is made of copper, silicon and various other alloys, and is commonly used in plumbing, electrical, tattoo machines and power plants because of its extreme resistance to corrosion and heat. Slotted Drive, Flat Head Machine Screws in this selection feature a slotted drive with a countersunk, flat head. They can be driven using a standard slotted / flat head screwdriver or bit. The countersunk head runs flush with the installation surface when properly installed for a smooth finish. Common Uses Machine screws are designed to be used with nuts, or driven into tapped holes. Unlike sheet metal screws, in most applications they can be uninstalled and reinstalled. Machine screws are ideal for drawer runners, machines, electronics, and vehicles. Silicon Bronze Machine screws are valued for their corrosion resistance, and are found in areas where this type of application is exposed to a harsh environment. Listing photo is generic for the fastener type listed in this listing and is not to scale. Please refer to the description for fastener details. If in doubt, please ask a question through chat or email. We will respond with the requested information quickly. Listing photo is generic for the fastener type listed in this listing and is not to scale. Please refer to the description for fastener details. If in doubt, please ask a question through chat or email. We will respond with the requested information quickly.