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Optical Flat NSN 5210-01-189-1619

Item Description

A flat, transparent piece of glass, generally of fused quartz, with one or both principal surfaces polished to within a few millionths of an inch of a true plane. It is used in conjunction with a monochromatic light source to measure the flatness of precision finished surfaces, and to determine the distance and parallelism between precision finished surfaces by comparison with known standards. In operation the flat is superimposed, reference surface downward, on the parts under test and when illuminated by monochromatic light the rays reflected from the reference surface are either reinforced or neutralized by the rays reflected from the surface under test producing interference bands which reveal any variations in the thickness of the film of air between surface under test and the flat. Excludes optical parallels.

NSN 5210-01-189-1619 NSN: 5210-01-189-1619

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Features and Characteristics

Case
Not provided
Design Type
Master single
Working Surface Flatness Accuracy
0.00000200 inches
Material
Quartz, fused
FSC
5210 Craftsmen's Measuring Tools
NIIN
011891619
NSN
5210011891619

Manufacturer Part Numbers

Part numbers registered to this national stock number.
Part Number
Cage
Status
MSDS
Part Number:
GG-O-635
Cage Code:
81348
Status:
A
MSDS:
Part Number:
24-10-10SMM
Cage Code:
62679
Status:
A
MSDS:

Q & A

Frequently asked questions for NSN 5210-01-189-1619
What are the manufacturers of nsn 5210011891619?
Does this nsn 5210011891619 have a shelf life?
No. This NSN does not have an applicable shelf life.
What is the formal definition of nsn 5210011891619
A flat, transparent piece of glass, generally of fused quartz, with one or both principal surfaces polished to within a few millionths of an inch of a true plane. it is used in conjunction with a monochromatic light source to measure the flatness of precision finished surfaces, and to determine the distance and parallelism between precision finished surfaces by comparison with known standards. in operation the flat is superimposed, reference surface downward, on the parts under test and when illuminated by monochromatic light the rays reflected from the reference surface are either reinforced or neutralized by the rays reflected from the surface under test producing interference bands which reveal any variations in the thickness of the film of air between surface under test and the flat. excludes optical parallels.
Does nsn 5210011891619 contain any precious metals?
No precious metal content.
Does nsn 5210011891619 contain any hazardous materials?
No MSDS. No hazardous material.
What is the ESD classification of nsn 5210011891619?
No known electrostatic discharge.

Identification Group

Item Identification Guide (IIG) and Item Name Code (INC)
INC
FIIG
App. Key
Cond. Code
Status
INC:
18274
FIIG:
T303-J
App. Key:
JA
Cond. Code:
1
Status:
A

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