Split Lock Washers

Choosing the Right Split Lock Washer

We supply split lock washers in multiple styles with various materials and finish options. Understanding the characteristics of each material and collar type is key when selecting the right split lock washer for your application.

Split Lock Washer Collar Options

• Regular Split Lock Washers: Most common style. Suitable for general-purpose fastening and light-to-medium vibration resistance.
• High Collar Lock Washers: Designed for use with socket head cap screws. The taller profile provides greater surface contact and improved holding power.
• Heavy Split Lock Washers: Thicker than standard for increased spring tension. Used in heavy-duty or high-load environments.

Material Options

• Steel: Provides strength for most general-purpose applications. Often combined with zinc coatings to resist rust.
• 18-8 Stainless Steel: Offers excellent corrosion resistance for harsh or outdoor environments.
• 316 Stainless Steel: Superior corrosion resistance and suitable for applications that require exposure to saltwater or corrosive chemicals.

Finish Options

• Plain Finish: No coating; best for dry indoor environments where corrosion isn't a concern.
• Black Oxide: Aesthetic black finish with mild corrosion resistance.
• Zinc Clear (Cr+3)/Zinc Yellow-Chromate: The zinc coating offers moderate corrosion resistance against moisture.
• Galvanized: Hot-dipped galvanized steel washers are 10 times as corrosion resistant as zinc- and zinc yellow-chromate plated washers.

Benefits of Split Lock Washers

• Provides reliable resistance to loosening
• Simple to install
• Works with various bolt and nut styles and materials
• Available in multiple sizes and finishes to suit a range of environmental factors

Application Considerations for Helical Spring Lock Washers

Split lock washers are used in nearly any industrial application where vibration or temperature changes could cause a bolt or nut to loosen. The helical shape bites into both the fastener and the substrate, reducing the risk of becoming loose. Split lock washers are found in everything from machinery and industrial equipment to automotive and agricultural components. A few considerations when using these washers:

• The washer's inner diameter must match the bolt diameter for a proper fit.
• Not recommended for high-torque applications that require a greater clamping force.
• On soft surfaces, pair with a flat washer to prevent damage or embedment.
• Consider whether the washer will be exposed to corrosive conditions like moisture or chemicals. If so, choose an appropriate corrosion-resistant material and finish.

Split Lock Washer FAQs

What are split lock washers for?

Split lock washers help prevent threaded fasteners from loosening due to vibration, thermal changes, or other external factors. The split and twisted design generates tension to maintain a secure hold.

When should you use a split washer?

Use a split washer when fasteners are subject to movement or vibration and you need extra resistance to loosening without using chemical threadlockers.

What is a high-collar lock washer?

A high-collar washer is a taller version of a standard split lock washer. It is typically used with socket head cap screws and provides better surface contact and load distribution.

Can split lock washers be reused?

Yes, but only if the washer is not visibly damaged or deformed. You can reuse split lock washers as long as the washer still provides proper tension.

What are the disadvantages of split lock washers?

Split lock washers aren't designed for exceptionally high torque applications. If being used with softer materials, they should be used with a flat washer.

Other names for split lock washers?

Yes. Split lock washers are also called helical spring washers, split ring washers, spring lock washers, and sometimes just "lock washers."

Why Choose Fastco to be Your Split Lock Washer Supplier?

As a leading distributor of top-quality industrial fasteners, customers nationwide rely on Fastco for fast turnaround times and an extensive ready-to-ship inventory. Our team takes a hands-on approach to customer service, offering personalized support from quote to delivery. Whether you need bulk orders of split lock washers or one-off purchases, our team is here to help you source the right parts for the job.

Contact Us to Learn How Fastco Can Supply Helical Spring Lock Washers For You

Need help selecting the right split lock washer? Contact Fastco today to speak with our team or request a quote online. If you need additional fasteners, we've got you covered. Explore our selection of bolts, screws, nuts, flat washers, and more. Fastco is your one-stop source for all your industrial fastener supplies.