Thumb screw with knurled head; Metric M4-0.7 thread with 13mm thread length. Pack of 2 screws.
Excellent replacement for lost screws or upgrades for smaller ones on your astronomy accessories. Will work with commonly available eyepiece holders, adapters, diagonals, barlows, etc. that are threaded for M4 screws. Large knurled head makes it easier to grip with gloves on.
You will receive 2 pieces of the long screw shown on the upper right side of the product photo above. The shorter screw on the bottom left is not included and is sold separately.
Measurements - Long Screw:
A = Head Height: 0.32 in (8.1mm)
B = Head Diameter: 0.38 in (9.8mm)
C = Shoulder Height: 0.19 in (4.9mm)
D = Shoulder Diameter: 0.29 in (7.5mm)
L = Total Length: 1.10 in (28mm)
T = Thread Length: 0.51 in (13mm)
Thread Size: M4-0.7
Thread Style: Coarse
Head Style: Knurled Thumbscrew
Drive Style: None
Material: Varies based on available stock