485pc External Tooth Lock Washers Kit, 304 SS, M2.5-M12

Keep your fasteners secure with this Uietuil 485-piece external tooth lock washer assortment kit. Crafted from corrosion-resistant 304 stainless steel, the set includes 8 common metric sizes (M2.5–M12) to match most bolts and screws. With 100 pieces each of M2.5, M3, and M4, plus smaller quantities of larger sizes, this kit ensures you have the right washer for jobs ranging from furniture assembly to automotive repairs.

The external tooth design bites into both the fastener head and mating surface, creating additional friction that prevents loosening under vibration. All washers are neatly organized in a durable, clear case for easy identification and storage. Whether you're a DIYer, contractor, or hobbyist, this versatile kit delivers long-lasting performance and reliability for all your locking washer needs.