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Optical Element Retainer NSN 5855-01-171-2817

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 5855-01-171-2817 NSN: 5855-01-171-2817

Features and Characteristics

Shoulder Length
0.260 inches
Hole Diameter
1.720 inches
Width
0.040 inches
Overall Length
0.300 inches
Flange Diameter
1.969 inches
Hole Or Slot Quantity
4
Depth
0.040 inches
Drive Type
Slotted
Internal Annular Serration
Not provided
Setscrew Notch
Not provided
Shoulder Thread Size
1.9375 in.-32
Material
Aluminum alloy, qq-a-225/8, alloy 6061, t6
Material
Aluminum alloy 6061
Material Specification
Qq-a-225/8, alloy 6061, t6 federal specification single material response
Surface Treatment
Anodize
Style Designator
Shouldered
Surface Treatment
Anodized, mil-a-8625, type 1, class 2
FSC
5855 Emitted And Reflected Radiation Night Vision Equipment
NIIN
011712817
NSN
5855011712817

Manufacturer Part Numbers

Part numbers registered to this national stock number.
Part Number
Cage
Status
MSDS
Part Number:
13074744
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 5855-01-171-2817
What are the manufacturers of nsn 5855011712817?
Does this nsn 5855011712817 have a shelf life?
No. This NSN does not have an applicable shelf life.
What is the formal definition of nsn 5855011712817
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 5855011712817 contain any precious metals?
No precious metal content.
Does nsn 5855011712817 contain any hazardous materials?
No MSDS. No hazardous material.
What is the ESD classification of nsn 5855011712817?
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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