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Optical Element Retainer NSN 1240-01-123-4821

Item Description

A cylindrical, externally threaded item having a centrally located hole specifically designed to retain by means of either a raised box (shoulder), or counterbore, countersink, or a similar shaped recess, an optical element such as a lens, reticle, cell, and the like, in optical assemblies. It must have drilled holes or slots to facilitate assembly and disassembly. For items which house the optical element(s), and form the internal or central portions of an optical system, see cell, optical element. Excludes ring, externally threaded.

NSN 1240-01-123-4821 NSN: 1240-01-123-4821

Features and Characteristics

Hole Diameter
1.455 inches
Overall Length
0.500 inches
Hole Or Slot Quantity
2
Drive Type
Slotted
Style Designator
Shouldered
FSC
1240 Optical Sighting And Ranging Equipment
NIIN
011234821
NSN
1240011234821

Manufacturer Part Numbers

Part numbers registered to this national stock number.
Part Number
Cage
Status
MSDS
Part Number:
O101
Cage Code:
78908
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 1240-01-123-4821
What are the manufacturers of nsn 1240011234821?
Does this nsn 1240011234821 have a shelf life?
No. This NSN does not have an applicable shelf life.
What is the formal definition of nsn 1240011234821
A cylindrical, externally threaded item having a centrally located hole specifically designed to retain by means of either a raised box (shoulder), or counterbore, countersink, or a similar shaped recess, an optical element such as a lens, reticle, cell, and the like, in optical assemblies. it must have drilled holes or slots to facilitate assembly and disassembly. for items which house the optical element(s), and form the internal or central portions of an optical system, see cell, optical element. excludes ring, externally threaded.
Does nsn 1240011234821 contain any precious metals?
No precious metal content.
Does nsn 1240011234821 contain any hazardous materials?
No MSDS. No hazardous material.
What is the ESD classification of nsn 1240011234821?
No known electrostatic discharge.

Identification Group

Item Identification Guide (IIG) and Item Name Code (INC)
INC
FIIG
App. Key
Cond. Code
Status
INC:
22451
FIIG:
T271-K
App. Key:
KA
Cond. Code:
2
Status:
A

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  •   Quality Inspected Parts
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