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Optical Element Retainer NSN 5855-01-039-2851

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 5855-01-039-2851 NSN: 5855-01-039-2851

Features and Characteristics

Shoulder Length
Between 0.365 inches and 0.375 inches
Tapered Hole Minor Diameter
Between 3.120 inches and 3.130 inches
Taper Angle In Deg
7.0
Overall Length
Between 0.734 inches and 0.744 inches
Flange Diameter
Between 3.495 inches and 3.505 inches
Hole Or Slot Quantity
3
Diameter
Between 0.120 inches and 0.130 inches
End Application
5855-01-039-2850 objective assembly
Drive Type
Drilled hole
Drive Facility Angular Spacing In Deg
120.0
Radius From Geometric Axis To Hole Center
1.585 inches
Guide Design
Thread relief
Internal Annular Serration
Not provided
Setscrew Notch
Not provided
Shoulder Thread Size
3.380 in.-32
Material
Aluminum alloy, 6061
Material
Aluminum alloy 6061
Style Designator
Shouldered
Surface Treatment
Dull black
Fsc Application Data
Night vision equipment
FSC
5855 Emitted And Reflected Radiation Night Vision Equipment
NIIN
010392851
NSN
5855010392851

Manufacturer Part Numbers

Part numbers registered to this national stock number.
Part Number
Cage
Status
MSDS
Part Number:
SM-D-850323
Cage Code:
04YE2
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 5855-01-039-2851
What are the manufacturers of nsn 5855010392851?
Does this nsn 5855010392851 have a shelf life?
No. This NSN does not have an applicable shelf life.
What is the formal definition of nsn 5855010392851
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 5855010392851 contain any precious metals?
No precious metal content.
Does nsn 5855010392851 contain any hazardous materials?
No MSDS. No hazardous material.
What is the ESD classification of nsn 5855010392851?
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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  •   On Time Delivery
  •   Certificate of Conformance
  •   Quality Inspected Parts
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