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Optical Element Retaining Ring NSN 1240-01-258-2395

Item Description

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.

NSN 1240-01-258-2395 NSN: 1240-01-258-2395

Features and Characteristics

Overall Length
1.540 inches
Outside Diameter
6.970 inches
Aperture Diameter
5.570 inches
Internal Flange Thickness
0.060 inches
Knurled Periphery
Not provided
Material
Aluminum alloy
Material
Aluminum alloy
Surface Treatment
Any acceptable
FSC
1240 Optical Sighting And Ranging Equipment
NIIN
012582395
NSN
1240012582395

Manufacturer Part Numbers

Part numbers registered to this national stock number.
Part Number
Cage
Status
MSDS
Part Number:
704AS1033-1 AND 704AS1638-2
Cage Code:
30003
Status:
A
MSDS:
Part Number:
891638
Cage Code:
96214
Status:
A
MSDS:
Part Number:
704AS1638-2
Cage Code:
30003
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 1240-01-258-2395
What are the manufacturers of nsn 1240012582395?
Does this nsn 1240012582395 have a shelf life?
No. This NSN does not have an applicable shelf life.
What is the formal definition of nsn 1240012582395
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.
Does nsn 1240012582395 contain any precious metals?
No precious metal content.
Does nsn 1240012582395 contain any hazardous materials?
No MSDS. No hazardous material.
What is the ESD classification of nsn 1240012582395?
No known electrostatic discharge.

Identification Group

Item Identification Guide (IIG) and Item Name Code (INC)
INC
FIIG
App. Key
Cond. Code
Status
INC:
22585
FIIG:
T271-J
App. Key:
JC
Cond. Code:
2
Status:
A

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