These stainless steel case back screws are used to keep the back of the watch closed. This assortment allows you to be able to easily replace a watch case back screw that gets lost or damaged during a battery changing, or is simply old and worn down. These screws can also be used as a replacement for band pins with a threaded head. This assortment has 18 different sizes of screws with 20 pieces each size for a total of 360 pieces.
- Thread diameters are: 1.0mm, 1.2mm, and 1.4mm
- Head diameters range from 1.2mm to 2.5mm
- Thread lengths range from 1.5mm to 3.0mm
- Refills available in packages of 10