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BRAKEQUIP FITTING - FEMALE M10X1.25 X 5/8NF EXT.THRD.

Alternate Part Numbers Alternate Part Number C1MB81	Brand Brakequip, LLC	Brand Brakequip	Pack Size 1.00	UOM EA	Supplier Part Number HFMFX01	Product Weight 0.09 lbs

Product Questions & Answers 2

Product Questions & Answers

Got a brake line repair on a older import where the hard line ends in M10x1.25 metric and the replacement section I picked up runs 5/8 NF. Will this fitting bridge those two together without needing some kind of middle adapter?

Question by: Scott W on Feb 4, 2026, 7:11 AM

That's exactly the situation this fitting was built for. One end is female M10x1.25 metric, the other carries a 5/8 NF external thread, so you can connect a metric line directly to a unified fine thread line in one piece. No intermediate components needed, no custom fab work. It's a common mismatch in brake line repairs, especially when you're mixing OEM metric hardware with aftermarket or domestic-spec replacement lines.

Answer by: Customer Support on Feb 5, 2026, 2:34 PM

got a brake line with M10x1.25 on one side, will this fitting let me hook it to a 5/8 NF threaded port?

Question by: Terry B on Mar 18, 2026, 5:57 PM

It is meant for exactly that kind of mixed-thread connection. One end is a female M10x1.25 metric thread, and the other end is a 5/8 NF external thread so you can adapt between those two thread standards without adding extra adapters.

Answer by: Customer Support on Mar 19, 2026, 9:10 PM