Compression Fittings on Fuel Hard Line

For these compression fittings, how close or what is the tolereance of the OD of the tubing they wil work with? For my new in tank sender I would like to convert all fittings to AN instead of hose and clamp.

Hi there!
Thank you for your question regarding the compression fittings. To provide you with the most accurate information, could you please specify which size and style of fitting you are inquiring about?

Additionally, I’d love to assist you further! If you could let me know which specific products you’re looking to pair together, I’d be happy to create a custom kit option for you if possible.

Looking forward to your response!

Best regards,
Evil Energy Team

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The Fuel line is .382" / 9.81mm in diameter top line.
Return line is .316" / 8.34 mm in diameter lower right line.
Vapor line:
.250" / 6.57mm Small diameter.
.317" / 8.22mm Large diameter Lower left.

The tubes would be cut with a die cut off wheel to be smooth. ( Barbs would be cut off)

So fittings I am assuming -6an and -4an