SKU: SLW516

5/16" Conquest Split Lock Washer - Plain Finish

5/16" Conquest Split Lock Washer - Plain Finish!

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Specifications

Diameter: 5/16"
Finish: Plain
Material: Carbon Steel
Inside Diameter: Max: 0.322" Min: 0.314"
Manufacturer name: Conquest Fasteners
Outside Diameter: 0.583"
Quantity: 1
Thickness: Max: 0.088" Min: 0.078"
Width: 0.125"
Description

Conquest Split Lock Washers with a plain finish are engineered to keep fasteners from working loose under load and vibration. These helical spring-style washers bite into both the underside of the bolt head and the surface it’s securing, maintaining tension that helps resist loosening over time.

These washers are commonly used in applications where constant motion, heat cycles, or heavy equipment can cause fasteners to back off. They’re ideal for general construction, industrial assembly, machinery repair, and field maintenance work.

Manufactured to meet reliable performance standards, the plain finish makes them a cost-effective solution where corrosion resistance isn’t the top priority. These washers are compatible with a wide variety of bolts and nuts across multiple diameters and thread sizes.

Key Features:

  • Split Lock Design: Creates spring tension and resistance against loosening due to vibration or torque.
  • Plain Finish: Ideal for dry, indoor environments or where minimal corrosion resistance is acceptable.
  • Durable Steel Construction: Built to maintain compression and hold integrity during tightening and long-term use.
  • Versatile Options: Available in multiple diameters to match your bolt size and application needs.

Applications:

  • Machinery and equipment assembly
  • Structural framing
  • Maintenance and repair jobs
  • Automotive and trailer fasteners
  • Agricultural tools and equipment

Installation:

Simply place the split lock washer between the fastener head (or nut) and the surface to be clamped. As the bolt or nut is tightened, the washer flattens and its edges bite into the surfaces to help resist rotation. No special tools are required—just proper torque per your bolt size and spec.

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× WARNING: This product can expose you to chemicals which are known to the State of California to cause cancer, birth defects and other reproductive harm. For more information visit: www.P65Warnings.ca.gov.

Customer Reviews

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M
Mark Sivdas
Excellent quality products and even better customer service.

I ordered bolts, nuts, washers and lock washers in different sizes. My first order was off in quantities which I realized just after completing the purchase but that gave me a chance to experience their customer service which was immediate, friendly and accomplished what I needed. I called and had the first ordered canceling in minutes so I could fix the quantities I needed. Most of my order arrived the next day, amazingly, since it came from Iowa to Virginia. What was not in stock was shipped out and arrived within a week at no additional charge. Shipping was very reasonable for the speed. Packaging was minimal which was great since nuts and bolts don't need excessive packaging or big boxes which often come with online orders. Prices were so much less than big box stores that even with shipping, I saved hundreds on my order. I will never buy the same products anywhere but from Fasteners Plus.