318PCS UIETUIL 8 Sizes Internal Tooth Star Lock Washers Kit, M2.5-M12 Black

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• 【SPEED LOCKING WASHERS ASSORTMENT】 This kit includes 318 pieces of high-quality metric internal tooth star lock washers, organized into 8 essential sizes: M2.5(60pcs), M3(60pcs), M4(50pcs), M5(40pcs), M6(60pcs), M8(20pcs), M10(18pcs), and M12(10pcs). This thoughtful selection covers the most frequently needed sizes for a wide range of applications.
• 【HIGH QUALITY MATERIAL】These star lock washers are made of high-quality 65Mn steel, offering excellent corrosion resistance and durability. They perform reliably under heavy load, impact, and in challenging conditions like humidity and temperature swings, ensuring a long service life.
• 【STAR LOCKING WASHER FUNCTION】This internal tooth lock washer is engineered for secure fastening and anti-vibration. Its internal teeth bite into both the fastener and the substrate, generating constant spring pressure and friction to prevent loosening from shock, rotation, or dynamic loads. Essential for maintaining clamp force in machinery, automotive, and structural assemblies, it ensures reliable, long-lasting connections.
• 【CONVENIENT STORAGE CASE】All 8 sizes of locking washer are individually housed in a durable, clear case. This organization prevents loss and mixing, ensuring the right locking washer is always at hand.
• 【VERSATILE USE】 These internal tooth star lock washers are widely used in machinery manufacturing, automobile manufacturing, shipbuilding, aerospace, and rail transport industries.