789-9

View detailed technical data, stock status, and sourcing information for: 789-9

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789-9
Federal Supply Group
Fire Control Equipment
Federal Supply Classification
1240 Optical Sighting and Ranging Equipment
National Stock Number
1240-00-210-4398
Item Name Code
21859
Assigment Date
01/01/1963 (63 years ago)

An unmounted, transparent, color free lens which may be treated with a low reflection coating to increase light transmission. Includes single and compound elements. For items having two plane parallel surfaces, see window, optical instrument. Excludes:reticle, optical instrument.

right-hand thread direction, 2a thread class, +1.1036 to 1.1086 inches thread pitch diameters, 0.200 inches thread length, 0.200 inches nominal overall 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
2a
Thread Pitch Diameters
+1.1036 to 1.1086 inches
Thread Direction
right-hand
Thread Length
0.200 inches
Overall Length
0.200 inches nominal
Thread Size
1 7/64-32
Overall Diameter
1.124 inches nominal
Screw Thread Series Designator
uns
Drive Type
slotted face
Thread Location
external
Eccentric Construction
not provided
Chamfer Location
both ends
Element Securing Method
internal flange
Material
aluminum

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
1390120 Optical Element Cell
789-9 Optical Element Cell
789PC9 Optical Element Cell

FAQs

Find helpful answers about installation, operation, maintenance, compliance, and troubleshooting.

What is the FSCG of the NSN 1240-00-210-4398?
The FSCG of the NSN 1240-00-210-4398 is 1240
Does the NSN 1240-00-210-4398 have a Schedule B code assigned?
Yes, the Schedule B code is 9803200000
Does NSN 1240-00-210-4398 require demilitarization?
Usml or ccl military items - demil required. Destroy item and components to prevent restoration or repair to a usable condition. (note 5).
Does NSN 1240-00-210-4398 contain precious materials?
Item does not contain precious metal.
Does NSN 1240-00-210-4398 contain hazardous materials?
Indicates there is no data in the hmirs and the nsn is in a fsc not generally suspected of containing hazardous materials.
When the NSN 1240-00-210-4398 was assigned to the Federal Catalog?
It was assigned 63 years ago, on Tue, Jan 1, 1963

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