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4510-00-278-9549 (MIL-V-291931A1.5)

4510-00-278-9549 is equivalent to manufacture part number 185-186. It is a flush valve and is classified under Federal Supply Class 4510 (4510 - Plumbing Fixtures and Accessories), stocked for defense, aerospace, MRO, and industrial maintenance applications. This item is cataloged in the NATO supply system under 4510 - Plumbing Fixtures and Accessories and is available through NSN-PARTS for U.S. government MRO, and commercial procurement.

NSN: 4510002789549
ALT NSN: 4510-00-278-9549
NIIN: 00-278-9549
NCB: 00
FSC: 4510
NSIN: 278-9549
MNF PART: 185-186
DESC: VALVE, FLUSH
ALT DESC: FLUSH VALVE
MNF ALT's: 185 | 185-186 | 185YV | 186 | 186YV | 186YVSU | 2745K11 | 451 | AQUAFLUSH | ASSE | FLUSHB0Y | FLUSHBOY | K9082BSP | K9084BSP | M291931A1.5 | M29193-1A1.5 | MIL-V-291931A1.5 | R0YAL | REGAL | ROYAL
OTHER ALT's: 1037A1A1A1B ASSE1037A1A1A1B | 185 | 185186 | 185YV | 186 | 186 R0YAL186 | 186 REGAL186 | 186 ROYAL186 | 186YV | 186YVSU | 2745K11 | 451 | 451 FLUSHB0Y451 | 451 FLUSHBOY451 | K9082BSP | K9084BSP | M291931A15 | MILV291931A15 | Z-6003 AQUAFLUSHZ6003

SKU MIL-V-291931A1.5

4510 - Categorized Part
4510 - Plumbing Fixtures and Accessories

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Federal Supply Class · 4510 - PLUMBING FIXTURES AND ACCESSORIES
Part & Reference Numbers (18)
Part NumberCAGEManufacturerStatusRNCCRNVCDACRNAACRNFCRNSCRNJCSADCHCCMSDS
18578330SLOAN VALVE COMPANYA595AX4B
185-18678330SLOAN VALVE COMPANYA596AX3B
185YV78330SLOAN VALVE COMPANYAC1E906AW
18678330SLOAN VALVE COMPANYAC16ZZAC
186YV78330SLOAN VALVE COMPANYAC1EAX6BY
186YVSU78330SLOAN VALVE COMPANYA596AX3B
2745K1139428MCMASTER-CARR SUPPLY COA524AX3D
45171718COYNE & DELANY COMPANYA596AX3B
AQUAFLUSH Z-600303966ZURN INDUSTRIES INCA326AX
ASSE 1037A1A1A1B16236DLA WEAPONS SUPPORT (COLUMBUS)A59EAXB
FLUSHBOY 45171718COYNE & DELANY COMPANYA326AX
K9082BSP87327SPEAKMAN COMPANYAC1FAX6AW
K9084BSP87327SPEAKMAN COMPANYAC16AX6AW
M29193-1A1.581349MILITARY SPECIFICATIONSA59EAX4B
M291931A1.581349MILITARY SPECIFICATIONSA596AX4B
MIL-V-291931A1.581349MILITARY SPECIFICATIONSA59FAXB
REGAL 18678330SLOAN VALVE COMPANYA326ZZ
ROYAL 18678330SLOAN VALVE COMPANYA596AXB
Management Data
MOESOSAACUIUI ConvMgmt CtrlUnit PriceQUPCIICSLCEffectiveC/H
DASMSZEAJ2200X-$107.781U001-OCT-2025C
DFSMSZEASF9---V$107.781U001-OCT-2025C
DMSMSDEA15B2---$107.781U001-OCT-2025C
DNSMSZEA9B-----$107.781U001-OCT-2025C
DSSMSZEA$107.781U001-OCT-2025C
GPSMSZEA$107.781U001-OCT-2025C
MOE Rules (10)
MOE RuleFormerAssignedAMCAMSCIMCIMCA
A920A18601-JUL-061LZCD
C918C00301-JUL-061L
FGGIFGKZ01-JUL-061LZTG
G80001-OCT-9300
G86001-APR-9100
MC47MC1001-JUL-061LZPA
N9BZN9ZD01-JUL-061LZGH
YB0101-APR-91
ZU0101-APR-91
ZW0101-DEC-05
Freight / Transportation
NMFCSubWCCTCCDescription
051080Z576ZFAUCETS,BIBCOCKS,GATES VALVES
Phrase Data (1)
CodeStatementMOEUSC
4REVERSAL OF PHRASE CODE A 4510-00-107-2850DMM
Identification
Item Name Code (INC)07162
Primary INC (PINC)0007162
NIIN Assigned01-JAN-1961
Schedule B (Export)8481809015
Precious Metals Ind (PMIC)A
Criticality CodeX
DEMIL CodeA
DEMIL Integrity Code1
Hazardous Material Ind (HMIC)N
Item Indicator (II)4
RPD MRC3
Standardization / Related NSNs (1)
Related NSNISCDecision Date
215-DEC-1974
Supersedes (Cancelled NSNs) (9)
Cancelled NSNEffective
4510-01-200-935701-APR-1990
4510-00-973-994801-AUG-1989
4510-00-107-285001-AUG-1992
4510-01-088-036101-DEC-1989
4510-00-223-611901-JAN-1987
4510-00-277-517801-JUL-1992
4510-00-216-579501-SEP-1987
4510-00-146-058812-JAN-1972
4510-00-287-365718-AUG-1967

If the NSN isn't available, are there substitutes or alternate part numbers for NSN 4510-00-278-9549?

NSN 4510-00-278-9549 is associated with the following manufacturer alternate part numbers: 185, 185-186, 185YV, 186, 186YV, 186YVSU, 2745K11, 451, AQUAFLUSH, ASSE, FLUSHB0Y, FLUSHBOY, K9082BSP, K9084BSP, M291931A1.5, M29193-1A1.5, MIL-V-291931A1.5, R0YAL, REGAL, ROYAL. 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

4510-00-278-9549

What National Stock Number (NSN) Category does this 4510-00-278-9549


NSN 4510-00-278-9549 belongs to Federal Supply Class 4510 which is 4510 - Plumbing Fixtures and Accessories. 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 4510-00-278-9549 have an alternate part number?

Yes. NSN 4510-00-278-9549 is also referenced by manufacturer part number MILV291931A15, where MILV291931A15 is the original equipment manufacturer designation for this item. When sourcing this part, buyers may encounter either the NSN 4510-00-278-9549 or the MPN MILV291931A15 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.

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Diane R., Defense Contractor – Procurement

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