Lock Washers (⅜”, ½”, ⅝”, ¾”)

Lock Washers

Lock Washers – High-Tension Fasteners for Secure and Vibration-Resistant Joints

Split Ring Lock Washers are a critical component in mechanical and structural assemblies where bolt security is paramount. These washers are constructed from durable zinc-plated steel, which provides essential corrosion resistance for long-term use. When a nut or bolt is tightened over this washer, the split ring deforms and its sharp, biting edges mechanically lock the fastener in place. This creates a spring tension that actively maintains the clamping load and resists any tendency for the fastener to loosen due to vibration, dynamic load, or thermal expansion/contraction.

The washers are available in a range of common medium-to-large imperial diameters, including 3/8″, 1/2″, 5/8″, and 3/4″, making them highly versatile for various industrial and automotive applications.

Key Benefits

• Vibration Resistance: Mechanically locks the nut and bolt together, preventing rotation and loosening caused by dynamic load or vibration.

• High Tension: Provides a continuous spring force that maintains clamping load even when the joint experiences minor dimensional changes.

• Corrosion Resistance: Zinc plating protects the high-carbon steel from rust and weathering, ensuring joint longevity.

• Wide Size Coverage: Available in common medium-to-large imperial diameters (3/8″, 1/2″, 5/8″, 3/4″) for varied applications.

• Easy Installation: Simple to install beneath the bolt head or nut.

Technical Specifications

• Product Type: Split Ring Lock Washer / Helical Spring Washer

• Sizes Available: 3/8″, 1/2″, 5/8″, 3/4″ (Inner Diameter)

• Material: Steel

• Design: Single Coil Split Ring

• Application: Vibration Prevention, Maintaining Joint Tension

• Grade: Industrial/Mechanical

Perfect For

• Securing critical fasteners on engines, industrial pumps, and vibrating machinery.

• Structural steel connections in construction and bridge building.

• Automotive chassis and suspension assembly.

• Any bolted joint that must remain tight and secure over time.

Application Instructions

• Placement: Place one lock washer beneath the nut or the bolt head.

• Tightening: Tighten the fastener to the proper torque specification. The washer will compress, and its sharp ends will bite into the bearing surface.

• Checking: Ensure the washer is completely flat after tightening (if it is not flat, the fastener is under-torqued).

• Safety: Use a flat washer beneath the lock washer if the bearing surface is soft (e.g., wood or soft plastic).

Pro Tips

• Do not reuse a lock washer; once fully compressed, its spring tension is significantly compromised.

• Clean the fastener threads before installation to ensure accurate torque readings and maximum locking effectiveness.

• For added security in extreme environments, consider using a thread locking compound in conjunction with the lock washer.

• Store unused washers in a dry environment to maintain the integrity of the zinc plating.

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