Small screw used, for example, to fix unmounted filters on filter drawers or filter wheels.
♦ M2 thread
♦ Thread length 3.5mm
♦ Countersunk head for small Phillips screwdrivers
♦ The total length of the screw is 5 mm
♦ Countersunk head diameter is 3.5mm
♦ Material is steel
TS-Optics knurled screws for secondary mirror collimation
Adjust the secondary mirror without tools, precisely and without the risk of a key or screwdriver falling on the primary mirror, for example.
Compared with normal small collimation screws, TS knurled screws have a number of advantages, such as flat milling surface. If there is a burr on the screw, it will dig into the aluminum secondary mirror mount. The collimation accuracy decreases. Also, the secondary mirror can twist during collimation. Therefore, a precise adjustment is impossible.
The screws fit, among other things, on all Newtonian telescopes from GSO, TS-Optics or Skywatcher and on all telescopes where the secondary mirror is fitted with M4 screws.
Especificaciones:
Material: | Steel (not stainless steel) |
Thread: | M2 |
Thread length: | 3.5 mm |
Total length of the screw: | 5 mm |