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Optical Element Cell NSN 1240-00-504-8251

Item Description

A cylindrical item specifically designed to hold a lens, reticle, or window in an optical system. Includes eccentric cells and/or rings designed to be rotated within the instrument to shift an optical element to a prescribed position.

NSN 1240-00-504-8251 NSN: 1240-00-504-8251

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Features and Characteristics

Thread Class
3b and 3a
Thread Length
0.438 inches and 0.312 inches
Overall Height
0.609 inches
Thread Size
0.723-48 and 0.825-48
Overall Diameter
0.825 inches
Screw Thread Series Designator
Uns and uns
Drive Type
Slotted face
Thread Location
Internal and external
Eccentric Construction
Not provided
Chamfer Location
Both ends
Chamfer Size
0.01 in. By 45 deg
Element Securing Method
Threaded ring
Material
Brass, mil-b-13492, comp 1-canceled
Material
Brass, mil-b-13492, comp 1-canceled
Surface Treatment
Oxide
Surface Treatment
Black oxide
Fsc Application Data
Telescope m7, integrated with fire control
FSC
1240 Optical Sighting And Ranging Equipment
NIIN
005048251
NSN
1240005048251

Manufacturer Part Numbers

Part numbers registered to this national stock number.
Part Number
Cage
Status
MSDS
Part Number:
5048251
Cage Code:
19200
Status:
A
MSDS:

Foreign Trade & Schedule B

What is a Schedule B number? Find more information at help.cbp.gov
  • Schedule B Number: 9803200000
  • NAICS: 990000
  • SITC: 93100
  • Description: Military equipments not identified by kind
  • End Use (Code 50060):
    Military apparel and footwear

Q & A

Frequently asked questions for NSN 1240-00-504-8251
What are the manufacturers of nsn 1240005048251?
Does this nsn 1240005048251 have a shelf life?
No. This NSN does not have an applicable shelf life.
What is the formal definition of nsn 1240005048251
A cylindrical item specifically designed to hold a lens, reticle, or window in an optical system. includes eccentric cells and/or rings designed to be rotated within the instrument to shift an optical element to a prescribed position.
Does nsn 1240005048251 contain any precious metals?
Precious metal content is unknown.
Does nsn 1240005048251 contain any hazardous materials?
No MSDS. No hazardous material.
What is the ESD classification of nsn 1240005048251?
No known electrostatic discharge.

Identification Group

Item Identification Guide (IIG) and Item Name Code (INC)
INC
FIIG
App. Key
Cond. Code
Status
INC:
21859
FIIG:
T271-J
App. Key:
JB
Cond. Code:
2
Status:
A

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