Eyepiece Thumbscrews with Rounded Tips
Replacements for the thumbscrews that hold your
eyepieces, diagonals and other valuable goodies.
Stainless steel thumbscrews have rRounded tips
reduce marring of eyepiece barrels. Knobs you
can get a grip on and extended lengths available.
Lengths refer to the shaft of the screws, not
including the head or cap. Lengths over 20mm or
3/4" may not be fully threaded.
$10 Minimum Total Order!
screws have knurled knobs and rounded tips.
METRIC SIZES: . . . . . . . . . . . . M3 and M4 sizes are available in RED. Please call or email.
thumbscrews are softer than stainless steel and have
higher profile knurled knobs. (Tips not rounded)
Stainless Steel Socket Cap Screws:
Price includes shipping in the USA! - - -
$10 Minimum Order!
If you are unsure of the size you need, check out
the Thumbscrew Assortment Kit
Stainless steel thumbscrews with low profile black plastic knobs
are available in sizes from 4-40 to 3/8" and M3 to M10. Please
email for pricing and delivery.
Nylon Thumbscrews are Here
Metric Slotted Nylon Thumbscrews are Here
M3 and M4 are the two most likely metric thumbscrews used
in off-shore accessories. These are the ones that are either
too small to grip or are lost in the grass!
(The screws below are not available, for reference only)
M3-.5 screws are used in many off-shore 1-1/4" focusers, diagonals, barlows, etc.
M4-.7 screws are used in many off-shore 2" focusers, diagonals, etc.