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Brake Nuts - M12 x 1.25 - 19.4 mm - Pack of 25 - BN189

Brake Nuts - M12 x 1.25 - 19.4 mm - Pack of 25 - BN189

These Mehr Brake Nuts are precision-engineered components designed for reliable performance in bra...

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eBayBrake Nuts M12 x 1.25, L: 19.4 mm Pack Of 25 - BN189
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B&QB&Q - Brake Nuts M12 X 1.25L: 19.4 mm Pack Of 25
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Product Information

Full details

The Mehr Brake Nuts (BN189) are precision-engineered components designed for mechanics, automotive enthusiasts, and repair professionals who require secure, high-durability hardware for vehicle braking systems. These male-configuration M12 x 1.25 nuts offer a reliable fit to ensure component integrity under pressure; however, users must verify the specific thread pitch and compatibility with their existing brake lines and calipers before installation to ensure a safe and proper seal.

All features

Model Part NumberBN189
BrandMehr

Extended Product Information

FAQs

What is the thread pitch for these brake nuts?

These nuts feature an M12 x 1.25 mm thread pitch.

Are these suitable for all vehicles?

No, these are specific to systems utilizing M12 x 1.25 specifications; always confirm compatibility with your vehicle's service manual.

How many nuts are in a pack?

The pack contains 25 brake nuts.

What is the internal diameter of the BN189 nut?

The internal diameter is 6.5 mm.

Should I use thread-locking compound on these nuts?

Generally, thread-locking compounds are not recommended for brake fittings; ensure the flare provides the seal and the nut is tightened to the correct torque.

Troubleshooting

Nut will not thread smoothly

Back the nut out completely, ensure the threads on the mating component are not damaged or filled with debris, and realign carefully.

Brake fluid leaking after installation

Ensure the flare on the brake line is correctly seated and the nut has been torqued to the manufacturer-specified value.

Pros and Cons

Pros

  • High-precision threads prevent cross-threading issues
  • Durable build quality for long-term safety
  • Convenient 25-pack size for major repairs
  • Standardized M12 x 1.25 metric specification

Cons

  • Compatible only with M12 x 1.25 threaded systems
  • Requires specific torque wrench settings for safety
  • Not intended for non-braking applications

Setup, Compatibility & Care

To ensure maximum safety, always verify that your vehicle's brake hardware specifically calls for an M12 x 1.25 mm thread pitch before usage.

  1. Preparation: Clean all mating surfaces to remove dirt, grease, or debris that could affect the integrity of the connection.
  2. Installation: Thread the nut by hand first to ensure the threads are aligned; never force the nut using a wrench if resistance is felt.
  3. Torqueing: Consult your vehicle's service manual for the specific torque requirements for brake line fittings and use a calibrated torque wrench.
  4. Inspection: After the initial installation, bleed the braking system and check every connection point for fluid seepage.
  5. Care: Avoid exposure to harsh acidic cleaners which may degrade the metallic coating of the nuts over time.

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