DIYers and mechanics, this washer assortment is seriously handy to have in your toolbox! You get 270 total pieces across the six most common metric sizes: M4 (100pcs), M5 (60pcs), M6 (40pcs), M8 (30pcs), M10 (20pcs), and M12 (20pcs). Made from 304 stainless steel, these external serrated lock washers won't rust or corrode, making them perfect for outdoor projects, marine applications, or any situation where moisture is a concern. The serrated teeth bite into both the fastener and the surface you're fastening to, creating serious resistance against loosening from vibration or movement. They're designed to be used under bolt heads and nuts in applications where couplings tend to work loose over time. The silver tone looks professional, and the entire set comes neatly organized in a transparent plastic box with compartments, making it easy to find the size you need and keep everything organized. At 128.74 grams total, it's a substantial set that'll handle countless projects. Whether you're working on cars, machinery, furniture, electronics, or general repairs, having these lock washers on hand means you'll always have the right size when you need to prevent fasteners from backing out. It's one of those basic supplies that every workshop should have available.
Free 30-day returns 
Free 30-day returns
