6181390

View detailed technical data, stock status, and sourcing information for: 6181390

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6181390
Federal Supply Group
Fire Control Equipment
Federal Supply Classification
1240 Optical Sighting and Ranging Equipment
National Stock Number
1240-00-618-1390
Item Name Code
21859
Assigment Date
01/01/1963 (63 years ago)

An item specifically designed to hold and/or position a mirror(s), prism(s), reflector(s), or the like, in an optical system. Excludes:cell,optical element; holder,mirror and holder,reflector.

0.770 inches minimum and 0.780 inches maximum overall length, 0.156 inches and 0.172 inches thread length, right-hand thread direction, +2.4042 to 2.4090 inches and +2.2922 to 2.2978 inches thread pitch diameters, 2a and 2b thread class

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 and 2b
Thread Pitch Diameters
+2.4042 to 2.4090 inches and +2.2922 to 2.2978 inches
Thread Direction
right-hand
Thread Length
0.156 inches and 0.172 inches
Overall Length
0.770 inches minimum and 0.780 inches maximum
Thread Size
2-7/16 in.-24 and 2-5/16 in.-32
Overall Diameter
2.438 inches nominal
Screw Thread Series Designator
uns
Drive Type
slotted face
Thread Location
external and internal
Eccentric Construction
not provided
Chamfer Location
opposite drive end
Chamfer Size
0.010 in. by 45 deg
Element Securing Method
threaded ring
Material
aluminum alloy 6061
Material Document And Classification
ww-t-700/6, t4 or t6,type 1 fed spec single material response
Fsc Application Data
periscope,battery command

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
6181390 Optical Element Cell

FAQs

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

What is the FSCG of the NSN 1240-00-618-1390?
The FSCG of the NSN 1240-00-618-1390 is 1240
Does the NSN 1240-00-618-1390 have a Schedule B code assigned?
Yes, the Schedule B code is 9803200000
Does NSN 1240-00-618-1390 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 1240-00-618-1390 contain precious materials?
Item does not contain precious metal.
Does NSN 1240-00-618-1390 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 1240-00-618-1390 was assigned to the Federal Catalog?
It was assigned 63 years ago, on Tue, Jan 1, 1963

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