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A double-rivet endpiece is a spectacle construction method where the metal hinge plate is secured to the thick acetate frame using two small metal pins, called rivets. These pins pass completely through the plastic material near the hinge and are visible on the exterior of the frame.
read more about double rivet eyeglass endpiece ...The two-rivet system provides superior stability and strength. By using two points of permanent, fixed contact instead of relying on a single screw, the connection between the hinge and the frame is stabilized. This permanent fixture resists loosening and hinge failure over time.
The exposed, polished metal dots are considered a traditional hallmark of high-quality, hand-finished acetate frames. The visible rivets add a subtle, retro decoration to the temple area. The number of visible rivets often communicates the frame's robust build quality.
Unlike screw hinges, which can be tightened, a damaged rivet must be replaced by a specialized optician. The technician drills out the old pin and installs a new rivet with precision tools, creating a new, permanent bond.
The double-rivet design is a traditional construction method that maximizes the frame's structural lifespan. By creating a permanent bond between the hinge and the plastic material, the two rivets prevent the temple arm from wobbling or stretching, which is a measure of the frame's long-term quality.
No, the double rivet construction requires the thickness of plastic or acetate material to hold the pins securely.
Yes, the rivets are press-fitted to be permanent and should not be removed unless the frame is being repaired by a specialist.
The added weight is minimal, and the stability provided by the two points of contact is a welcome trade-off.
Riveted endpieces are more durable than glued hinges. However, if the rivets become loose, the frame front may wobble, causing your "fitting height" to shift. If you wear progressive lenses, this slight wobble can make reading difficult; have an optician re-tighten the rivets.
ABDO. Ophthalmic Frame Materials and Components (abdo.org.uk). 2024.
The Vision Council. Frame Component Durability (thevisioncouncil.org). 2023.
Review of Optometry. Dispensing for Progressive Success (reviewofoptometry.com). 2024.
College of Optometrists. Spectacle Frame Repair (college-optometrists.org). 2024.