Model: C687-17
Optical Element Retaining RingSpecial Features:
32 pitch anti-reflection thread inside surface of both ends, six ea holes 0.1540 in. Dia. Drilled through external flange, external flange has two ea rectangle milled areas 1.812 in. From center of ring diameter to outer edge offlange and 1.000 in. Wide, 1 ea hole 0.110 in. Dia. Drille through external flange, 2 ea holes 0.188 in. Diameter drilled through body of ring
Properties:
A cylindrical item having an internally flanged diameter designed to retain a lens or window in the objective end, or a diopter scale at the viewing end of an optical instrument. It may have one or more of the following characteristics: internal thread or machined for a press fit, method of securing, and/or knurled periphery. For externally threaded items, see retainer, optical element. Excludes cell, optical element; nut, plain knurled; nut, plain round; and ring, retaining.
Part C687-17 NSN 6650-00-499-2802
Material Classification
Hazardous material, precious metals, criticality, enviroment, and electrostatic discharge indicatorsPackaging & Shipping
Freight Classification
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Schedule B and Export
- Schedule B: 9018500000
- SITC: 87225
- End Use: Medicinal equipment
- NAICS: 339115
- USDA: 1
Freight Class: Other ophthalmic instruments and appliances and parts and accessories
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