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21 5/16"
3/8" / 5/16"
UPC Code

Sea Dog Maritime is one of the top high-quality marine product distributors. They ensured that the engine components and accessories they produce fit specified requirements.

BATTERY TERMINAL (WINGNUT) (3-415210-1) Ideal for use in the aquatic environment. A clamp-type wing nut terminal can be used to convert a standard post battery to a marine or other special-purpose battery. The epoxy coating option aids in polarity identification and corrosion resistance. A wingnut, also known as a butterfly nut, is a nut with two large metal "wings" on each side that allows it to be tightened and loosened by hand without the use of tools.

Key Features:

  • Easy engagement and removal.
  • Lower torque requirement for tightening.
  • Hand tightening is simple and does not require the use of a tool.
  • Usually, it does not require heat treatment.
  • Wingnuts can be used with or without washers.
  • Durable and safe to use.
  • It lasts longer than other substandard product materials.


  • Brand: Sea Dog Marine
  • SKU: 3-415210-1
  • UPC: 035514415156
  • Weight: 0.75 LBS
  • Alternate Products SKU: "385407", "5-51006", "3-415210-1"
  • This product replaces: “415210, “415210-1, “3-415210, “35514415156.

Important Note. A wing-out, a cast-in-place stud, and a failure-prone combo. Both should be avoided, especially when using hefty cables.

Wing nut style battery terminals convert battery posts to stud connectors and permit quick disconnection from the battery. Polarity specific to meet USCG regulations. Die cast lead

This product replaces:

    415210, 415210-1, 3-415210, 35514415156

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ProPride 3P Hitch, Hassle Free, 60-Day No Risk Guarantee

You can return the 3P Hitch at any time during the first 60 days of use for a complete refund. That's a 100% risk free guarantee. 60 days begins when you receive the product unless otherwise arranged for a later date. We must receive the product in Holly, MI in 60 days or less. To initiate a return you can contact us for a return merchandise authorization. If the hitch was purchased during a FREE shipping promotion, $290 will be deducted for any returned hitches.


We can ship to virtually any address in the Continental US. Note that there are restrictions on some products, and some products cannot be shipped to international destinations.

When you place an order, we will estimate shipping and delivery dates for you based on the availability of your items and the shipping options you choose. Depending on the shipping provider you choose, shipping date estimates may appear on the shipping quotes page.

Please also note that the shipping rates for many items we sell are weight-based. The weight of any such item can be found on its detail page. To reflect the policies of the shipping companies we use, all weights will be rounded up to the next full pound.

Returns Policy

You may return most new, unopened items within 30 days of delivery for a full refund. We'll also pay the return shipping costs if the return is a result of our error (you received an incorrect or defective item, etc.)

You should expect to receive your refund within four weeks of giving your package to the return shipper, however, in many cases you will receive a refund more quickly. This time period includes the transit time for us to receive your return from the shipper (5 to 10 business days), the time it takes us to process your return once we receive it (3 to 5 business days), and the time it takes your bank to process our refund request (5 to 10 business days).

If you need to return an item, please Contact Us with your order number and details about the product you would like to return. We will respond quickly with instructions for how to return items from your order.

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