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Optical Element Retainer NSN 5855-01-276-4494

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 5855-01-276-4494 NSN: 5855-01-276-4494

Features and Characteristics

Hole Diameter
2.870 inches
Overall Length
0.110 inches
Recess Diameter
2.870 inches
Recess Depth
2.870 inches
End Application
Dlsm-b-850321
Hole Chamfer Diameter
2.870 inches
Material
Aluminum alloy, qq-a-250/11, t6 or aluminum alloy, qq-a-225/8, alloy 6061, t6
Material
Aluminum alloy 6061 or aluminum alloy 6061
Material Specification
Qq-a-250/11, t6 federal specification 1st material response and qq-a-225/8, alloy 6061, t6 federal specification 2nd material response
Style Designator
Recessed
Fsc Application Data
Night vision equipment, emitted and reflected radiation
FSC
5855 Emitted And Reflected Radiation Night Vision Equipment
NIIN
012764494
NSN
5855012764494

Manufacturer Part Numbers

Part numbers registered to this national stock number.
Part Number
Cage
Status
MSDS
Part Number:
SM-D-850324
Cage Code:
80063
Status:
A
MSDS:

Foreign Trade & Schedule B

What is a Schedule B number? Find more information at help.cbp.gov
  • Schedule B Number: 9014900000
  • NAICS: 334511
  • SITC: 87412
  • Description: Parts & accessories for direction finding compasses and other navigational instruments and appliances
  • End Use (Code 22220):
    Marine engines, parts

Q & A

Frequently asked questions for NSN 5855-01-276-4494
What are the manufacturers of nsn 5855012764494?
Does this nsn 5855012764494 have a shelf life?
No. This NSN does not have an applicable shelf life.
What is the formal definition of nsn 5855012764494
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 5855012764494 contain any precious metals?
No precious metal content.
Does nsn 5855012764494 contain any hazardous materials?
No MSDS. No hazardous material.
What is the ESD classification of nsn 5855012764494?
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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  •   Certificate of Conformance
  •   Quality Inspected Parts
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