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5210-01-306-9785
Optical Flat
5210013069785 013069785 D-617-6-Q-1-D
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. View more Optical Flat
January 2023
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Restrictions 5210-01-306-9785
5210-01-306-9785 is a Optical Flat that does not have a nuclear hardened feature or any other critical feature such as tolerance, fit restriction or application. Demilitarization of this item has been confirmed and is not currently subject to changes. This item is considered a low risk when released from the control of the Department of Defense. The item may still be subject to the requirements of the Export Administration Regulations (EAR) and the Code of Federal Regulations (CFR). This item is not suspected to be hazardous. This item does not contain a precious metal.
End Users 5210-01-306-9785
- US Air Force (FGG4)
- Effective Date:
- 1 Sep 2000
- Former MOE Rule:
- FEE4
- Republic of Korea (ZH01)
- Effective Date:
- 1 Jul 1993
Approved Sources 5210-01-306-9785
- Part Number
- Manufacturer
- Status
- D-617-6-Q-1-D
- Manufacturer
- 91141 - Davidson Optronics Inc. (Active)
- Primary Buy
- Primary Buy
Datasheet 5210-01-306-9785
- Characteristic
- Specifications
- FIIG
- Specifications
- T303-J
- Case [ALFK]
- Provided
- Diameter [ABMZ]
- 6.000 Inches Nominal
- Design Type [APGF]
- Working Double
- Material [MATT]
- Quartz, Fused
- Thickness [ABNM]
- 1.000 Inches Minimum And 1.250 Inches Maximum
NATO Stock Numbers Related to 5210-01-306-9785
Freight Information 5210-01-306-9785
5210-01-306-9785 has freight characteristics.It has a National Motor Freight Classification (NMFC) of 186630. A Sub NMFC of X. It has a NMFC Description of TOOLS:NOI O/T PLSTC IN BBLS/BXS. 5210-01-306-9785 is rated as class 77.5 when transported by Less-Than Truckload (LTL) freight. 5210-01-306-9785 is rated as class 77.5 when transported by Less-Than Carload (LCL) rail or ocean freight. It has a Uniform Freight Classification (UFC) number of 91810 which rates the freight between FCL and LCL. 5210-01-306-9785 has a variance between NMFC and UFC when transported by rail and the description should be consulted. It has a Water Commodity Code (WCC) of 738 for ocean manifesting and military sealift. 5210-01-306-9785 is not classified as a special type of cargo when transported by water. 5210-01-306-9785 is not a consolidation and does not exceed 84" in any dimension. It should be compatible with a standard 72" Aircraft Cargo Door when transported by air.