3183221
View detailed technical data, stock status, and sourcing information for: 3183221
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A graduated scale, usually cylindrical in shape, attached to, or forming a part of, the focusing nut or knob of the eyepiece of an optical instrument. It is read in conjunction with a line or dart indicator to measure the change in refracting power of the eyepiece, in diopters, and introduces correction to compensate for the eyesight variation of the observer. It may have a knurled periphery and/or teeth on the inside diameter.
1.525 inches nominal overall length, 3a thread class, right-hand thread direction, +0.8679 to 0.9062 inches thread pitch diameters, 0.168 inches thread length
Product Characteristics
Below you’ll find the complete technical specifications and performance data for this part, including material details and compliance information.
- Thread Class
- 3a
- Thread Pitch Diameters
- +0.8679 to 0.9062 inches
- Thread Direction
- right-hand
- Thread Length
- 0.168 inches
- Overall Length
- 1.525 inches nominal
- Thread Size
- 0.9062-32
- Overall Diameter
- 1.210 inches nominal
- Screw Thread Series Designator
- uns
- Thread Location
- external
- Eccentric Construction
- provided
- Cell Eccentricity From Geometric Axis
- 0.003 inches
- Chamfer Location
- larger diameter end
- Material
- copper alloy
Related Parts
This NSN group includes multiple components designed to meet specific performance and operational standards. Each listing provides detailed specs, functionality data, and replacement compatibility information:
| Part Number | Name |
|---|---|
| 3183221 | Optical Element Cell |
FAQs
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What is the FSCG of the NSN 1240-01-269-1044?
Does the NSN 1240-01-269-1044 have a Schedule B code assigned?
Does NSN 1240-01-269-1044 require demilitarization?
Does NSN 1240-01-269-1044 contain precious materials?
Does NSN 1240-01-269-1044 contain hazardous materials?
When the NSN 1240-01-269-1044 was assigned to the Federal Catalog?
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