Product Details | OPTICAL FLAT

5210-01-234-8551 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: D6173Q4S, D617-3Q4S, 5210-01-234-8551, 01-234-8551, 5210012348551, 012348551

Measuring Tools | Measuring Tools, Craftsmen's

Supply Group (FSG) NSN Assign. NIIN
52 21 JUN 1986 01-234-8551

Demand History | NSN 5210-01-234-8551

Part Number Request Date QTY Origin
5210-01-234-8551 2013-02-12 1 DIBBS
5210-01-234-8551 2012-08-09 1 DIBBS

Cross Reference | NSN 5210-01-234-8551

Part Number Cage Code Manufacturer
D617-3Q4S 91141 DAVIDSON OPTRONICS INC.

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Technical Data | NSN 5210-01-234-8551

Characteristic Specifications
SPECIAL FEATURES USED FOR TESTING FLATNESS AND PERFORMING MECHANICAL CALIBRATION; CONSISTS OF OPTICAL FLAT 3 IN. IN DIAMETER,MADE OF QUARTZ,WITH A FLATNESS OF +/- 0.000005 INCHES,THICKNESS OF 0.500 TO 0.650 INCHES; E/I F16 STD INU
MANUFACTURERS CODE 91141
DESIGN CONTROL REFERENCE D617-3Q4S

Restrictions/Controls & Freight Information | NSN 5210-01-234-8551

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: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
NMF Description 121570 GAGES AIR LIQUID LEVEL PRESSURE
Less than car load rating
Less than truck load rating J 100.2
Water commodity Code 657 unknown
Originating Activity Code TG Warner-Robins Air Logistics Center
Robins AFB, GA 31098-5609
Air Dimension Code A Shipment is not a consolidation and does not exceed 72 inches in any dimension.
Air Commodity V Vehicles, machinery, shop and warehouse equipment and supplies, including special tools and equipment, ground servicing and special purpose vehicles, marine equipment and supplies, repair and maintenance parts for the above.
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 5210-01-234-8551

Category Code Description
Budget Code9 General Support DIV57X4921.070:Air Force decentrally managed expense items (ERRC XB3, XF-3) with a unit cost of less than $250,000 that are requisitioned/procured at base (retail) level from DLA, GSA, Army, Navy, Depot Maintenance Service, Air Force Industrial Fund (AFMC), local manufacture and commercial vendors.
Price ValidationE The current standard price is an estimated price.
  • Estimated Price challenges are allowed, but follow procedures in para 60.b. (3) of section L of this manual.
  • This code will be changed to a P code upon notification of a contract price or this code will be changed to an updated code upon determination of a valid price.
Fund CodeSFStock fund applicable to items managed for the Air Force by the respective Inventory Control Point.
Source of SupplySMSDefense Logistics Agency
Enterprise Business Systems
AgencyDFDepartment of the Air Force
Service OrganizationFU.S. Air Force
ReparabilityNStock Fund (except Munitions)
Acquisition Advice CodesJNOT STOCKED, CENTRALLY PROCURED # (NON-STOCKED ITEMS) IMM/Service centrally managed but not stocked item. Procurement will be initiated only after receipt of a requisition.
Controlled Item CodeUUNCLASSIFIED
Shelf Life Code0Nondeteriorative
Purchasing QTY
UOM
Q
EA : Each