Optical Instrument Lens NSN 6650-00-520-4253

Item Description

An unmounted, transparent, color free lens which may be treated with a low reflection coating to increase light transmission. Includes single and compound elements. For items having two plane parallel surfaces, see window, optical instrument. Excludes reticle, optical instrument.

NSN: 6650-00-520-4253

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Features and Characteristics

Diameter

Between 0.686 inches and 0.689 inches

Axial Thickness

0.236 inches and 0.024 inches

Compound Lensaxial Thickness

Between 0.240 inches and 0.272 inches

Compound Lens Edge Thickness

0.166 inches

Equivalent Focal Length

1.444 inches

Back Focal Length

1.281 inches

Refraction Index

1.5411 and 1.6210

Abbe Constant

59.900 and 36.200

Compound Lens Style

Doublet

Individual Lens Style

Double convex and meniscus diverging

Element Left Surface Radius

0.793 inches and -0.595 inches

Element Right Surface Radius

-0.595 inches and -4.220 inches

Special Features

Reflection reducing treatment on front andback surfaces, jan-m-621

Material

Glass, optical, mil-g-174, grade c, type 541-599 or glass, optical, mil-g-174, grade c, type 621-362

Material

Glass, optical, mil-g-174, grade c, type 541-599 or glass, optical, mil-g-174, grade c, type 621-362

Fsc Application Data

Binocular, m7, m16

FSC

6650 Components And Accessories Test Equipment Optical Instruments

NIIN

005204253

NSN

6650005204253

Manufacturer Part Numbers

Part numbers registered to this national stock number.

Part Number

Cage

Status

MSDS

Part Number:

5204253

Cage Code:

19200

Status:

MSDS:

Part Number:

6650005204253

Cage Code:

A00AM

Status:

MSDS:

Part Number:

1240005204253

Cage Code:

A00AM

Status:

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 6650-00-520-4253

What are the manufacturers of nsn 6650005204253?

Us Army Ardec Rdecom (19200)
E.c.a Etablissement Central (A00AM)

Does this nsn 6650005204253 have a shelf life?
No. This NSN does not have an applicable shelf life.

What is the formal definition of nsn 6650005204253
An unmounted, transparent, color free lens which may be treated with a low reflection coating to increase light transmission. includes single and compound elements. for items having two plane parallel surfaces, see window, optical instrument. excludes reticle, optical instrument.

Does nsn 6650005204253 contain any precious metals?
Precious metal content is unknown.

Does nsn 6650005204253 contain any hazardous materials?
No MSDS. No hazardous material.

What is the ESD classification of nsn 6650005204253?
No known electrostatic discharge.

Identification Group

Item Identification Guide (IIG) and Item Name Code (INC)

INC

FIIG

App. Key

Cond. Code

Status

INC:

21884

FIIG:

T271-E

App. Key:

Cond. Code:

Status:

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On Time Delivery
Certificate of Conformance
Quality Inspected Parts
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