Product Details | OPTICAL FLAT

5210-01-594-8508 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.

Part Alternates: V860606, 5210-01-594-8508, 01-594-8508, 5210015948508, 015948508

Measuring Tools | Measuring Tools, Craftsmen's

Supply Group (FSG) NSN Assign. NIIN
52 25 APR 2011 01-594-8508

Cross Reference | NSN 5210-01-594-8508

Part Number Cage Code Manufacturer
V860606 62679 VAN KEUREN

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Technical Data | NSN 5210-01-594-8508

Characteristic Specifications
III DESIGN TYPE REFERENCE DOUBLE
MATERIAL QUARTZ, FUSED
DIAMETER 6.000 INCHES NOMINAL
THICKNESS 1.000 INCHES NOMINAL
CASE PROVIDED
SPECIAL FEATURES ACTUAL WORKING SURFACE FLATNESS TOLERANCE 0.000001 IN

Restrictions/Controls & Freight Information | NSN 5210-01-594-8508

Category Code Description
Hazardous Material Indicator CodeNThere is no data in the HMIS and the NSN is in an FSC not generally suspected of containing hazardous materials
Demilitarization Code:ANon-Munitions List Item/ Non-Strategic List Item - Demilitarization not required.
Electro-static Discharge Susceptible:ANo known Electrostatic Discharge (ESD) or Electromagnetic Interference (EMI) sensitivity
Precious Metals Indicator Code:AItem does not contain precious metal
Criticality Code:X The item does not have a nuclear hardened feature or any other critical feature such as tolerance, fit restriction or application.
Automatic Data Processing Equipment:0Represents items with no ADP components. NOTE: Codes 1 through 6 are only to be used when the item is Automatic Data Processing Equipment (ADPE) in its entirety and is limited to the type meeting only one of the definitions for codes 1 through 6. (See code 9)
Category Code Description
No Freight Information