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6685-00-078-0098 (MILA25933A)

6685-00-078-0098 is equivalent to manufacture part number 2109. It is a pressurized compartmen altimeter and is classified under Federal Supply Class 6685 (6685 - Pressure, Temperature, and Humidity Instruments), stocked for defense, aerospace, MRO, and industrial maintenance applications. This item is cataloged in the NATO supply system under 6685 - Pressure, Temperature, and Humidity Instruments and is available through NSN-PARTS for U.S. government MRO, and commercial procurement.

NSN 6685000780098
ALT NSN 6685-00-078-0098
NIIN 00-078-0098
NCB 00
FSC 6685
NSIN 078-0098
MNF PART 2109
DESC ALTIMETER, PRESSURIZED COMPARTMEN
ALT DESC PRESSURIZED COMPARTMEN ALTIMETER
MNF ALT's 2109 | AAU3AA | MILA25933A
OTHER ALT's 2109 | AAU3AA | MILA25933A
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Availability:
1+ in stock, ready to be shipped
Part & Reference Numbers (3)
Part NumberCAGEManufacturer StatusRNCCRNVCDACRNAACRNFCRNSCRNJCSADCHCCMSDS
2109 26136 KEARFLEX ENGINEERING COMPANY A 5 1 1 KE 3 D
AAU3AA 23669 AERONAUTICAL AND AERONAUTICAL H 5 9 5 KE 3 B
MILA25933A 81349 MILITARY SPECIFICATIONS A 2 2 3 KE 3 D
Item Characteristics (20)
MRCRequirementReply
ABFYOVERALL DEPTH2.375 INCHES NOMINAL
ABKWOVERALL HEIGHT2.360 INCHES MINIMUM AND 2.390 INCHES MAXIMUM
ABMKOVERALL WIDTH2.360 INCHES MINIMUM AND 2.390 INCHES MAXIMUM
AFRACONTACT QUANTITY3
AKSFCONTACT TYPEPIN
APSJSCALE QUANTITY1
AQFZSCALE NAMEALTITUDE
ASKXELECTRICAL CONNECTION QUANTITY1
ASKZELECTRICAL CONNECTION IDENTIFYING NUMBERDM5605-3P
ASPCPOINTER QUANTITY1
ASPDPOINTER FINISHNONLUMINOUS
ASPYNONLUMINOUS SCALE MARKING AND COLORLETTERS WHITE AND LINED INCREMENTS WHITE AND NUMERALS WHITE
ASSBMECHANICAL CONNECTION QUANTITY1
ASSCMECHANICAL CONNECTION SIZE1/4/0.250/ IN.
ASSDMECHANICAL CONNECTION TYPEINTERNAL TUBE
ASSSPOINTER COLORWHITE
AXGYMOUNTING METHODPANEL
BBHLSCALE SMALLEST INCREMENT GRADUATION1000 FT
BLJNCONNECTOR CONTROLLING AGENCYDEUTSCH
ZZZTNONDEFINITIVE SPEC/STD DATAAAU3AA TYPE
Management Data
MOESOSAACUIUI ConvMgmt CtrlUnit PriceQUPCIICSLCEffectiveC/H
DN NRP V EA 7RPFAR9 $2327 0 U 0 01-OCT-2025 C
Navy Management
COGSMICIRRCSMCC
7RPFAR9
MOE Rules (4)
MOE RuleFormerAssignedAMCAMSCIMCIMCANIMSCDSORPICASICAAACCollaboratorsReceivers
N2R4 01-APR-91 1 T E KE V JA NI KE KE
VJ01 01-FEB-19 VJ VJ
ZP01 01-APR-91 ZP ZP
ZU01 01-MAR-08 ZU ZU
Freight / Transportation
NMFCSubUFCHMCLTLLCLWCCTCCSHCADCACCRVCIntegActyDescription
057690 X 32860 D D 653 Z 9 A SZ KE ALTIMETERS IN BOXES
Packaging Data — Part 1
PICA/SICATOSICQMOPClng/DryPres MatWrap MatPkg CatCush/DunThkUIUnit ContSourceUnpkg WtUnpkg Dim
P B 000 51 1 00 FA ZZZ0 GH D EA ED A 0000.0 000000000000
Packaging Data — Part 2
PICA/SICALvl ALvl BLvl CUCLSpc MkgInter ContOPIPack WtPack CubePack DimSupplemental
P Q F F B 03 00 M 0001.5 0000.125 0060 X 0060 X 0060
Special Packaging Instructions (1)
Design ActyContainer NSNSPI NoRevSPI DatePICA/SICA
P
Phrase Data (1)
CodeStatementMOEUSC
RREFER TO NET PRICE 1762.00DNL
Identification
Item Name Code (INC)03387
Primary INC (PINC)0003387
NIIN Assigned11-AUG-1967
Schedule B (Export)9025801500
Precious Metals Ind (PMIC)A
Criticality CodeN
DEMIL CodeA
DEMIL Integrity Code7
Hazardous Material Ind (HMIC)P
ADP Equipment Ind0
Item Indicator (II)4
RPD MRC4
Shipping Weight & Cube
Shipping Weight2 lb
Shipping Cube0.229 cu ft
Standardization / Related NSNs (1)
Related NSNISCDecision Date
211-NOV-1971

If the NSN isn't available, are there substitutes or alternate part numbers for NSN 6685-00-078-0098?

NSN 6685-00-078-0098 is associated with the following manufacturer alternate part numbers: 2109, AAU3AA, MILA25933A. Whether you need to buy, order, or get wholesale pricing on any of these part numbers, NSN-PARTS.COM accepts quote requests for pricing and availability, including obsolete and hard-to-find inventory.

FAQ

6685-00-078-0098

What National Stock Number (NSN) Category does this 6685-00-078-0098


NSN 6685-00-078-0098 belongs to Federal Supply Class 6685 which is 6685 - Pressure, Temperature, and Humidity Instruments. This FSC is part of the federal supply catalog maintained by the U.S. Department of Defense and is used to standardize the procurement and cataloging of military and government components across all branches of the armed forces and federal agencies.

What traceability documentation is available for parts ordered through NSN-PARTS.COM?

Traceability is a core part of our sourcing process. Depending on the part and its supply chain origin, we can provide Certificates of Conformance (C of C), manufacturer packing slips, date codes, lot codes, and sourcing documentation that traces the item back through the distribution chain. For government and defense procurement, we understand that documentation requirements can be strict if your purchase order or contract specifies particular traceability requirements, include them in your RFQ and we will confirm our ability to meet them before order confirmation.

Does NSN 6685-00-078-0098 have an alternate part number?

Yes. NSN 6685-00-078-0098 is also referenced by manufacturer part number MILA25933A, where MILA25933A is the original equipment manufacturer designation for this item. When sourcing this part, buyers may encounter either the NSN 6685-00-078-0098 or the MPN MILA25933A depending on the procurement system or supplier being used. NSN-PARTS.COM accepts quote requests using either the NSN or the manufacturer part number. For a full list of alternate part numbers associated with this NSN, see below.

Which country originally cataloged this NSN, and what is its National Codification Bureau (NCB) code?

Every NSN includes a two-digit National Codification Bureau (NCB) code in positions 5 and 6 of the full 13-digit number. That code identifies which country originally cataloged the item through the NATO codification system. You can find the NCB code for this part listed in the product description above. Use the table below to identify the originating country and its NATO membership status.

For this NSN, the NCB code is 00, which means it was originally cataloged by USA (NATO). Use the table below for a full reference of all NCB codes and their associated countries.

Country NCB Code(s) Status
USA00 and 01NATO
Unassigned (USA)02 through 10n/a
West Germany / Germany11n/a
Belgium12NATO
France13NATO
Italy14NATO
Czechoslovakia / Czech Republic15NATO
Netherlands16NATO
South Africa17NATO
Brazil18Tier 1
Canada19Tier 2
Denmark20 and 21NATO
Greece22NATO
Iceland23NATO
Norway24NATO
Portugal25NATO
Turkey26NATO
Luxembourg27NATO
Argentina28Tier 2
Japan29Tier 1
Israel30Tier 2
Singapore31Tier 2
Spain32NATO
Malaysia33Tier 2
Thailand34Tier 1
Egypt35Tier 1
Republic of Korea36Tier 2
Estonia37NATO
Romania38NATO
Slovakia39NATO
Austria40Tier 2
Slovenia41NATO
Poland42NATO
United Nations-standard items43n/a
Indonesia44Tier 2
Philippines45Other
Lithuania46NATO
Fiji47Other
Tonga48Other
Bulgaria49NATO
Hungary50NATO
Chile51Tier 1
Croatia52NATO
North Macedonia53NATO
Latvia54NATO
Oman55Tier 1
Russian Federation56Other
Finland57NATO
Albania58NATO
Kuwait59Other
Ukraine60Tier 2
Belarus61Tier 2
Morocco62Tier 1
Sweden63NATO
Papua, New Guinea64Other
Australia65Tier 2
Afghanistan66Other
Georgia67Tier 1
Saudi Arabia69n/a
United Arab Emirates70Tier 1
India71Tier 2
Serbia72Tier 2
Pakistan73Other
Bosnia-Herzegovina74Tier 1
Brunei75Tier 1
Montenegro76NATO
Jordan77Tier 1
Peru78Tier 1
Colombia79Tier 2
Qatar80Tier 1
Algeria81Other
New Zealand82Tier 2
United Kingdom98 and 99NATO
What is your process for locating excess inventory for hard-to-find NSN PARTS?

When a part is not immediately available through standard distribution channels, our sourcing team conducts a multi-channel search that includes authorized distributor networks, government surplus and DLA excess inventory, independent broker networks, and manufacturer direct channels where applicable. Every potential source is evaluated for authenticity and traceability before we present it as a viable option. We do not source from unvetted or unknown suppliers, and we will never offer parts we cannot document. If we locate stock, we provide full sourcing details with your quote so your procurement and quality teams can make an informed decision before committing to an order.

Are parts sourced through NSN-PARTS.COM traceable back to the original manufacturer?

We make every effort to ensure full chain-of-custody traceability for every part we supply. Our preferred sourcing path is always manufacturer-direct or through authorized distribution channels, which provides the strongest traceability and the lowest counterfeit risk. When parts must be sourced through independent or excess channels; as is often the case for obsolete or long-discontinued components, we require sourcing documentation at every link in the chain and apply additional scrutiny to confirm authenticity. Parts that cannot be adequately documented are not offered for sale. If your program has specific traceability requirements such as QPL, QML, or QSLD compliance, please include those details in your RFQ so we can confirm sourcing eligibility upfront.

Testimonials

Sent an RFQ on a Friday afternoon and had a quote back within the hour. Parts showed up ahead of schedule. That kind of response time matters a lot when equipment is down.

Lead Tech, Part 145 Repair Station

We work on older military equipment and finding parts is a constant battle. NSN-Parts has come through for us more times than I can count. Good people, fast turnaround.

Diane R., Defense Contractor – Procurement

I had three distributors tell me a part was gone for good. NSN-Parts had it in stock and shipped it the same day. They're my first call now

Logistics Specialist, USAF

The FSC search actually works. I found what I needed without digging through a bunch of irrelevant results. Ordering was simple and the parts were exactly what was listed.

Priya M., Supply Chain Analyst

I've been sourcing NSN PARTS for a long time and it's hard to find a distributor that really knows the catalog. These guys do. They answer questions fast and know what they're talking about.

Robert H., Aviation Parts Buyer

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