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Optical Element Retaining Ring NSN 6650-01-285-3385

Item Description

A cylindrical item having an internally flanged diameter designed to retain a lens or window in the objective end, or a diopter scale at the viewing end of an optical instrument. It may have one or more of the following characteristics: internal thread or machined for a press fit, method of securing, and/or knurled periphery. For externally threaded items, see retainer, optical element. Excludes cell, optical element; nut, plain knurled; nut, plain round; and ring, retaining.

NSN 6650-01-285-3385 NSN: 6650-01-285-3385

Features and Characteristics

Thread Class
3a
Thread Pitch Diameters
+1.6826/+1.6862 inches
Thread Length
0.250 inches
Outside Diameter
1.719 inches
Thread Size
1 23/32-20
Screw Thread Series Designator
Uns
Thread Location
External
Special Features
125 microinch surface finish
Material
Brass
Material
Copper alloy
Surface Treatment
Black oxide, mil-f-495
FSC
6650 Components And Accessories Test Equipment Optical Instruments
NIIN
012853385
NSN
6650012853385

Manufacturer Part Numbers

Part numbers registered to this national stock number.
Part Number
Cage
Status
MSDS
Part Number:
5525872
Cage Code:
53711
Status:
A
MSDS:

Foreign Trade & Schedule B

What is a Schedule B number? Find more information at help.cbp.gov
  • Schedule B Number: 9018500000
  • NAICS: 339115
  • SITC: 87225
  • Description: Other ophthalmic instruments and appliances and parts and accessories
  • End Use (Code 21610):
    Medicinal equipment

Q & A

Frequently asked questions for NSN 6650-01-285-3385
What are the manufacturers of nsn 6650012853385?
Does this nsn 6650012853385 have a shelf life?
No. This NSN does not have an applicable shelf life.
What is the formal definition of nsn 6650012853385
A cylindrical item having an internally flanged diameter designed to retain a lens or window in the objective end, or a diopter scale at the viewing end of an optical instrument. it may have one or more of the following characteristics: internal thread or machined for a press fit, method of securing, and/or knurled periphery. for externally threaded items, see retainer, optical element. excludes cell, optical element; nut, plain knurled; nut, plain round; and ring, retaining.
Does nsn 6650012853385 contain any precious metals?
No precious metal content.
Does nsn 6650012853385 contain any hazardous materials?
No MSDS. No hazardous material.
What is the ESD classification of nsn 6650012853385?
No known electrostatic discharge.

Identification Group

Item Identification Guide (IIG) and Item Name Code (INC)
INC
FIIG
App. Key
Cond. Code
Status
INC:
22585
FIIG:
T271-J
App. Key:
JC
Cond. Code:
2
Status:
A

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  •   On Time Delivery
  •   Certificate of Conformance
  •   Quality Inspected Parts
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