Replacement Tension and Focus Lock Thumb Screw Set for GSO Crayford Focusers
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Thumb screws with knurled head; Metric M4-0.7 thread with 7mm (1x) and 13mm (1x) thread length. Pack of 2 screws - one short and one long.
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.
Useful Resources
Measurements - Short 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: 0.83 in (21mm)
T = Thread Length: 0.27 in (7mm)
Thread Size: M4-0.7
Thread Style: Coarse
Head Style: Knurled Thumbscrew
Drive Style: None
Material: Coming soon
Color: Silver
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
Color: Silver
Other Information
- Country of Manufacture: Taiwan
Thumb screws with knurled head; Metric M4-0.7 thread with 7mm (1x) and 13mm (1x) thread length. Pack of 2 screws - one short and one long.
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.
Thumb screws with knurled head; Metric M4-0.7 thread with 7mm (1x) and 13mm (1x) thread length. Pack of 2 screws - one short and one long.
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.
Useful Resources
Measurements - Short 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: 0.83 in (21mm)
T = Thread Length: 0.27 in (7mm)
Thread Size: M4-0.7
Thread Style: Coarse
Head Style: Knurled Thumbscrew
Drive Style: None
Material: Coming soon
Color: Silver
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
Color: Silver
Other Information
- Country of Manufacture: Taiwan
Replacement Tension and Focus Lock Thumb Screw Set for GSO Crayford Focusers