M4 Screw, 4.3mm ID, Stainless Steel Internal Tooth Lock Washer MPN:SIW7X0400-100BX

M4 Screw, 4.3mm ID, Stainless Steel Internal Tooth Lock Washer is a premium quality lock washer that provides security and durability to the application by ensuring the screws stay firmly in place with minimal movement. Manufactured from stainless steel, it exhibits excellent resistance against corrosion and rust which makes it suitable for outdoor applications or harsh environments. Its internal teeth grip onto flat head screws effectively without requiring nuts, saving time during the assembly process while providing a uniform clamping force around the screw. With an M4 size of 4.3mm ID, this lock washer caters to numerous thread sizes and applications across different industries like automotive, aerospace or construction, offering vibration resistance, anti-theft security features and weather protection with ease.