Double Layer self-Locking washers DIN25201 Double Fold Self-Lock Washer M3 M4-M90 Anti-Loosening Anti-Skid Shockproof Lock Gasket Safety Spacer(304 Stainless Steel,M3 (20Pairs))

Material:304 Stainless Steel(A2-70) / 65Mn Alloy Steel DacrometSize:M3 = NL3 (Inner Diameter M3 Washer)M6 = NL6 (Inner Diameter M6 Washer)NL4SP(Outer Diameter Plus Large and Inner Diameter M3 Washer)NL12SP(Outer Diameter Plus Large and Inner Diameter M12 Washer)Material : SteelThickness(mm) : 1mm 1.5mmModel Number : DIN25201DIY Supplies : MetalworkingOrigin : ChinaCertification : CE,RoHS

• 【Product Structure】: Features a dual-layer self-locking design that generates irreversible friction, ensuring bolts remain securely fastened even under severe vibration, heavy loads, or thermal expansion.
• 【Wide Range of Applications】: Wedge lock washers are suitable for diverse industries including household furniture, construction and bridge building, manufacturing and processing, shipbuilding, forestry and agriculture, as well as heavy-duty vehicles.
• 【Extra-Large Diameter】: Maximizes clamping force by increasing contact surface between locking teeth and bolt head/nut and workpiece, delivering safer, more reliable retention.
• 【Enhanced Stability】: Unlike traditional washers relying solely on friction, this dual-layer washer utilizes tension to secure bolts subjected to severe vibration and dynamic loads.
• 【Diverse Specifications】: Multiple models available (e.g., M2, M3, M4, M5, M6, M8, etc.) for your selection with confidence.