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An endpiece screw is the small screw that holds the front frame piece to the temple arm. It passes through the barrels of the hinge. This screw is the single most important piece of hardware for connecting the frame front to the temple arm.
read more about endpiece screw on eyeglasses ...The main purpose is movement and connection. The screw acts as an axle that allows the temple arm to swing open and closed. It also holds the two halves of the frame (the front and the arm) together with the proper tension.
Endpiece screws loosen because they are constantly subject to friction and vibration every time the glasses are opened or closed. This normal wear causes the screw to slowly back out of the hinge barrels, leading to a floppy temple arm.
The best way to maintain the screw is with periodic tightening. An optician can quickly use a specialized screwdriver to tighten the screw. For at-home maintenance, a small optical screwdriver kit is needed to keep the temples snug and stable.
A loose endpiece screw causes your backup frames to sit crookedly on your face, which makes the vision correction misaligned. Tight screws make sure your backup glasses are stable and accurate, providing instant comfort and clarity when you remove your contacts.
No, regular household screwdrivers are usually too large and can strip the tiny threads on the endpiece screw. Only use a screwdriver designed for optics.
If the screw is lost, the temple arm will fall off. Stop wearing the frames and take them to an optician immediately for a replacement screw.
It depends on how often you wear and handle your frames, but having them checked once or twice a year by an optician is a good habit.
Avoid using glue or "Loctite" on eyeglass screws at home, as this makes it impossible for an optician to adjust the frames later. If your screws frequently loosen, ask an optician to install a "nylock" screw or a small plastic sleeve to hold them in place safely.
AOA. Caring for Your Eyeglasses (aoa.org). 2024.
The Vision Council. Eyewear Fasteners and Screws (thevisioncouncil.org). 2023.
ABDO. Minor Frame Repairs (abdo.org.uk). 2024.
Review of Optometry. Maintaining Patient Eyewear (reviewofoptometry.com). 2024.