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

Description & Features

Designed for mixed-thread brake line connections, this Brakequip fitting combines a female M10x1.25 metric thread on one end with a 5/8 NF external thread on the other. The dual-thread configuration makes it well suited for applications where metric and unified fine thread standards meet, a common requirement in vehicle brake system repairs and hydraulic line adaptations across automotive and light industrial equipment.

The BRAKEQUIP FITTING - FEMALE M10X1.25 X 5/8NF EXT.THRD. is a Brakequip product, a brand recognised for brake and hydraulic line fittings in the automotive aftermarket and workshop trade. Its compact adapter design allows technicians to bridge incompatible thread types without custom fabrication or intermediate components.

SKU: HFMFX01

Supplier Part Number (MPN): HFMFX01

Alternate Part Numbers: C1MB81

Specifications

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)

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

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?

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

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.

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

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