Product Details | OPTICAL FLAT

5210-00-947-6293 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: GG0635, 5210-00-947-6293, 00-947-6293, 5210009476293, 009476293

Measuring Tools | Measuring Tools, Craftsmen's

Supply Group (FSG) NSN Assign. NIIN
52 30 MAR 1966 00-947-6293

Cross Reference | NSN 5210-00-947-6293

Part Number Cage Code Manufacturer
GG0635 81348 FEDERAL SPECIFICATIONS PROMULGATED BY GENERAL SERVICES

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Technical Data | NSN 5210-00-947-6293

Characteristic Specifications
DESIGN TYPE MASTER DOUBLE
MATERIAL GLASS, BOROSILICATE CROWN
WORKING SURFACE FLATNESS ACCURACY 0.00000200 INCHES NOMINAL
DIAMETER 3.000 INCHES NOMINAL
THICKNESS 0.6875 INCHES NOMINAL
CASE PROVIDED
NONDEFINITIVE SPEC/STD DATA II TYPE AND 2 CLASS
DEPARTURE FROM CITED DESIGNATOR ABNM
MANUFACTURERS CODE 81348
NON-DEFINITIVE GOVERNMENT SPEC/STD REFERENCE GG0635

Restrictions/Controls & Freight Information | NSN 5210-00-947-6293

Category Code Description
Shelf-Life Code:0Nondeteriorative
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.
Controlled Inventory Item Code:UUNCLASSIFIED
Precious Metals Indicator Code:UPrecious metal type is unknown
Criticality Code:X The item does not have a nuclear hardened feature or any other critical feature such as tolerance, fit restriction or application.
Category Code Description
NMF Description 058110 OPTICAL GOODS OR INSTRUMENTS NOI
Less than car load rating D 200
Less than truck load rating D 200.0
Water commodity Code 744 unknown
Originating Activity Code CX Defense Supply Center Richmond
Richmond, VA 23297-5000
Air Dimension Code A Shipment is not a consolidation and does not exceed 72 inches in any dimension.
Air Commodity M Medical supplies, equipment, samples records, etc.
Air Special Handling Z No special handling required.
Special Handling Code 9 unknonwn
HAZMAT
Type of Cargo Z No special type of cargo code applicable

Management | NSN 5210-00-947-6293

Category Code Description
Cognizance Codes9QNavy-owned stocks of items accepted by the General Services Administration for support of Navy requirements
Naval Inventory Control Point, Mechanicsburg
Source of SupplyGSAGeneral Services Administration
Washington, D.C. 20406
AgencyDNDepartment of the Navy
Service OrganizationNU.S. Navy
Acquisition Advice CodesVTERMINAL ITEM # Identifies items in stock, but future procurement is not authorized. Requisitions may continue to be submitted until stocks are exhausted. Preferred item National Stock Number is normally provided by application of the phrase: When Exhausted Use (NSN). Requisitions will be submitted in accordance with IMM/Service requisitioning procedures as applicable.
Controlled Item CodeUUNCLASSIFIED
Shelf Life Code0Nondeteriorative
Purchasing QTY
UOM
1
EA : Each