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Lug Nuts Needed For Sumec SR004B 14" x 5" RV Aluminum Trailer Wheels  

Updated 11/03/2025 | Published 01/19/2025

Question:

I have Sumec SR004B 14 x 5 rv aluminum rims that I am putting on my boat trailer but not sure which lugs to use. I was going to purchase solid stainless steel 1/2 x 20 with 60 degree cone. Will these work or do I need something different. The trailer is a for Bass tracker 18 dlx pontoon boat if that means anything.

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Back side of wheel
Back side of wheel
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Wheel face
Wheel face
(click to enlarge)

Expert Reply:

Hey Steve,

I wasn't able to find any info on wheels using the SR004B part number but it does look like these are conical so the # 12CLN you referenced would work if your wheel studs are 1/2'-20. If they're 9/16"-18 then you'll need the # TA76QR instead.

I'd love to add a picture of your boat and trailer to the page after you get your wheels installed if you'd like to email me a few?

expert reply by:
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Kevin C
Jon G. profile picture

Jon G.

11/3/2025

Hey Steve, how did things go with the lug nuts for your Bass Tracker trailer wheels? Did the 1/2"-20 option end up being the right fit? Your update could make it easier for others matching wheels to similar trailers.

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