M6 Flange Nut with Wing Screw - BGM PRO - Vespa PK, PK S, PK XL, PX - Black

BGM PRO Flange Nut M6 – Black, for Vespa PK/PX Brake and Clutch Levers

Small part, important function: The black BGM PRO M6 flange nut secures the adjusted position of the brake or clutch lever screw on the Vespa handlebar. It prevents the screw from accidentally turning, which could alter the lever play.

The high-quality black zinc-nickel coating ensures a discreet appearance and good corrosion protection. Thanks to the integrated flange, the nut can be locked against the handlebar housing without an additional washer.

The advantages at a glance

• Secure adjustment: Locks the position of the lever screw after adjusting the lever play
• Integrated flange: Larger contact surface without a separate washer
• Black zinc-nickel plating: High-quality appearance and good corrosion protection
• Precise fit: For compatible M6 lever screws on Vespa PK and PX handlebars
• Ideal for repairs: Replacement for missing, damaged, or corroded locknuts

What is the nut on the lever screw for?

On compatible Vespa handlebars, the screw for the brake or clutch lever is screwed directly into a thread in the handlebar housing.

This serves two purposes: It acts as the lever’s pivot point and, depending on how deeply it is screwed in, allows for adjustment of the axial lever play.

The flange nut serves exclusively to secure this adjustment. It holds the lever screw in its intended position and prevents the set play from changing due to accidental rotation of the screw.

A correctly adjusted lever should have as little lateral or axial play as possible, but must still move smoothly at all times.

How to Adjust Lever Play Correctly – A Quick Guide

The adjustment is straightforward and can be performed with the brake or clutch lever installed:

• 1. Loosen the lock nut: Loosen the M6 flange nut on the underside of the lever screw.
• 2. Adjust the lever play: Carefully turn the lever screw in or out until the lever has only minimal axial play.
• 3. Check for smooth operation: Actuate the lever several times. It must move smoothly over its entire travel without sticking.
• 4. Secure the adjustment: Hold the lever screw in place and lock the BGM PRO flange nut against the handlebar housing.
• 5. Final check: Check the lever play and free movement again. Then verify that the brake or clutch is functioning correctly.

Important: Do not tighten the lever screw so much that the lever becomes jammed between the mounts on the handlebar housing. Even after locking it in place, the lever must remain smooth-operating.

Adjusting the axial lever play should not be confused with adjusting the clutch or brake cable play. Cable play is adjusted separately using the designated adjustment mechanisms.

Black zinc-nickel coating

The BGM PRO flange nut features a high-quality black zinc-nickel finish. This provides good protection against corrosion and blends in particularly well with black handlebar fittings and similarly designed vehicle modifications.

The integrated flange seat distributes the forces generated during tightening over a larger area than a standard hex nut without a flange.

This makes the nut suitable for both meticulous restoration and for replacing corroded or damaged original fasteners.

Technical Specifications

Compatible Vehicles

For Vespa models with the corresponding M6 lever screw and lock nut, including:

• Vespa PK50 / PK80 / PK125
• Vespa PK S
• Vespa PK XL
• Vespa PX80 / PX125 / PX150 / PX200
• Other models with a comparable M6 lever mounting

Before ordering, compare the thread size and the existing mounting configuration.

Package Contents

• 1 × BGM PRO flange nut M6, black zinc-nickel plated

The lever screw is not included.

Frequently Asked Questions (FAQ)

Is the lever secured exclusively by this nut?

No. The lever screw is already screwed into the thread of the handlebar housing. The flange nut serves as a lock nut and secures the adjusted screw position.

Can I use the nut to adjust the lever play?

The actual adjustment is made by turning the lever screw in or out. The nut is then tightened to lock the adjustment in place.

How much play should the lever have?

The lever should have as little axial play as possible, but should be able to move freely and without jamming at all times. A smooth-operating lever is more important than a completely play-free but stiff setting.

Do I need an additional washer?

Thanks to the integrated flange seat, no additional washer is required for the lock nut itself. However, any spacer or spring washers provided within the lever mount must still be used.

Can I use the nut for brake and clutch levers?

Yes. The BGM PRO flange nut is suitable for both levers, provided a matching M6 lever bolt with a corresponding lock nut is used.