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Optical Element Retainer NSN 5855-01-171-6944

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 5855-01-171-6944 NSN: 5855-01-171-6944

Features and Characteristics

Shoulder Diameter
1.730 inches
Shoulder Length
0.050 inches
Hole Diameter
1.700 inches
Overall Length
0.170 inches
Guide Design
Thread relief
Guide Location
Shoulder
Internal Annular Serration
Not provided
Setscrew Notch
Not provided
Flange Thread Size
Aa1.850 in.-40uns-2a
Material
Steel, qq-s-763, class 416, cond a
Material
Steel comp 416
Material Specification
Qq-s-763, class 416, cond a federal specification single material response
Style Designator
Shouldered
FSC
5855 Emitted And Reflected Radiation Night Vision Equipment
NIIN
011716944
NSN
5855011716944

Manufacturer Part Numbers

Part numbers registered to this national stock number.
Part Number
Cage
Status
MSDS
Part Number:
13074811
Cage Code:
04939
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 5855-01-171-6944
What are the manufacturers of nsn 5855011716944?
Does this nsn 5855011716944 have a shelf life?
No. This NSN does not have an applicable shelf life.
What is the formal definition of nsn 5855011716944
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 5855011716944 contain any precious metals?
No precious metal content.
Does nsn 5855011716944 contain any hazardous materials?
No MSDS. No hazardous material.
What is the ESD classification of nsn 5855011716944?
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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