[9000 BULK] Lock Washers Countersunk External Tooth Steel Zinc #5/16

Lock Washers Countersunk External Tooth Steel Zinc #5/16

Secure, vibration-resistant fastener assemblies start with the right lock washer. Our Lock Washers Countersunk External Tooth in steel with zinc finish delivers a flush seating surface and aggressive bite to keep your bolts from loosening over time.

• Material: High-strength steel with a durable zinc finish for corrosion resistance and long-lasting performance.
• Profile: Countersunk design ensures a smooth, flush seating under the fastener head for a clean, professional appearance.
• Tooth Design: External teeth grip the mounting surface, providing enhanced resistance to loosening under dynamic loads.
• Size: Compatible with #5/16 inch hardware for a wide range of standard applications.
• Finish: Zinc plating offers bright aesthetics and reliable rust protection in demanding environments.
• Applications: Ideal for automotive, machinery, electronics enclosures, furniture hardware, and other assemblies subject to vibration.
• Benefits: Improves joint security, distributes load evenly, and extends the service life of fastened connections.

Usage tips: place the washer under the screw or bolt head, align with the mating surface, and tighten to the recommended torque. The countersunk profile plus external teeth delivers a secure, finished look while preventing fastener rotation.

Stock is ready for shipment and suitable for DIY projects, shop upgrades, and professional builds requiring a dependable locking solution with superior edge-to-surface performance.