Thread size for rigid oil tank nipples

Bad threads on upper return line oil nipple

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FLHMAN880
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Thread size for rigid oil tank nipples

#1

Post by FLHMAN880 »

I have half boogered threads on the outer top nipple on a rigid oil tank. Does anyone know of that nipple can be chased with a die ?, or the best way to repair it ?..
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Re: Thread size for rigid oil tank nipples

#2

Post by Ratedspeed »

Yes, the thread can be chased with a 9/16-24 die, available from Mc Master-Carr, but the die is pricey @ $ 84.00 usd

Mike
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Re: Thread size for rigid oil tank nipples

#3

Post by FLHMAN880 »

Thanks Mike, I’ll see if I can borrow one spmewhere…..
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Re: Thread size for rigid oil tank nipples

#4

Post by junebug »

A common thread file will clean them right up!
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Re: Thread size for rigid oil tank nipples

#5

Post by RooDog »

eBay Item number 283809634916
around $20....
Seems to be a common gun smithing size....

https://www.ebay.com/itm/283809634916?h ... R7rR87qYYQ
Robert Luland
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Re: Thread size for rigid oil tank nipples

#6

Post by Robert Luland »

Avoid McMaster and Graingers (Zoro). Chinese junk sold to the highest bidder.
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Re: Thread size for rigid oil tank nipples

#7

Post by Ratedspeed »

I maintain a large fleet and have been using McMaster-Carr for years and never experienced a quality issue, but I do know they stock alot of the hard to find fasteners and they ship immediately. Can't say the same for W.W. Grainger though.
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Re: Thread size for rigid oil tank nipples

#8

Post by RooDog »

Unless you are in the business of reconditioning OE Harley oil fittings I see no point in springing for a "quality" piece. Repurpose you buckies for something else, like beer, maybe.....
....RooDog....
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Re: Thread size for rigid oil tank nipples

#9

Post by Ratedspeed »

When working with crossed threads or trying to clean up threads that have been chrome plated you'll want the sharpest, most accurate cutter available.
When knuck and pan tanks are bringing $500 - $1200 the cost of a quality tool seems fairly reasonable. YMMV
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Re: Thread size for rigid oil tank nipples

#10

Post by Robert Luland »

My point was if you're going to buy Chinese junk. Pay the going rate not the bend over rate.
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Re: Thread size for rigid oil tank nipples

#11

Post by Larry »

McMaster-Carr is typically more expensive than other vendors, but I receive orders in less than 24 hours. And they have in stock uncommon items such as PEEK.
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