Nominal thread diameter 100 mm; pitch 0.75 mm. Right-hand; 1 start.
Very large thread used on large-aperture telescope focusers and accessories.
Nominal thread diameter 101.5 mm; pitch 0.75 mm. Right-hand; 1 start.
Found on some large telescope drawtube assemblies and accessories.
Nominal thread diameter 104 mm; pitch 0.75 mm. Right-hand; 1 start.
Nominal thread diameter 104 mm; pitch 24 tpi. Right-hand; 1 start.
Large telescope focuser thread; also filter thread on some super-telephoto lenses (Canon, Nikon 500mm+ primes).
Filter thread on some lenses.
Equipment and systems: Sigma 60-600mm f4.5-6.7 DG DN lens (Sony version).
Found on some very large telescope accessories.
Found on some large telescope accessories.
Found on some very large telescope accessories and professional astronomical equipment.
Equipment and systems: Sirui Jupiter 28-85mm lens filter thread.
Very large thread on large-aperture telescope accessories.
Equipment and systems: Apo-Nikkor 11/760mm process lens.
Nominal thread diameter 111 mm; pitch 0.75 mm. Right-hand; 1 start.
Found on some very large telescope drawtube assemblies.
Nominal thread diameter 112 mm; pitch 1.5 mm. Right-hand; 1 start.
Nominal thread diameter 112.6 mm; pitch 1 mm. Right-hand; 1 start.
Found on some large telescope accessories.
Equipment and systems: Omegon ED 100/600 APO Doublet.
Found on some large telescope accessories.
Nominal thread diameter 115 mm; pitch 1 mm. Right-hand; 1 start.
Nominal thread diameter 116 mm; pitch 0.75 mm. Right-hand; 1 start.
Nominal thread diameter 116 mm; pitch 1 mm. Right-hand; 1 start.
Nominal thread diameter 117 mm; pitch 0.75 mm. Right-hand; 1 start.
Found on some very large telescope accessories and professional astronomical equipment.
Found on some very large telescope accessories.
Nominal thread diameter 118 mm; pitch 1 mm. Right-hand; 1 start.
Nominal thread diameter 120 mm; pitch 1 mm. Right-hand; 1 start.
Nominal thread diameter 120 mm; pitch 1.5 mm. Right-hand; 1 start.
Nominal thread diameter 122 mm; pitch 0.75 mm. Right-hand; 1 start.
Very large telescope thread; used on some Schmidt-Cassegrain accessories and large refractors.
Very large thread found on some large-aperture telescope accessories.
Nominal thread diameter 125 mm; pitch 0.75 mm. Right-hand; 1 start.
Nominal thread diameter 127 mm; pitch 1 mm. Right-hand; 1 start.
Nominal thread diameter 127 mm; pitch 32 tpi. Right-hand; 1 start.
Very large telescope thread found on some large-aperture refractor focusers and observatory equipment.
Nominal thread diameter 134 mm; pitch 1 mm. Right-hand; 1 start.
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