Product Details | BOSS REDUCER

4730-00-187-3575 A straight fitting having a boss connection of a different size at each end. Both connections have external or internal machine threads (straight threads other than pipe or hose series) and are designed to facilitate a gasket, preformed packing, washer, or the like to form a seal at the boss. Excludes BUSHING (as modified).

Part Alternates: AN9191D, AN919-1D, AS4841, AS5174, AS5174D0402, 1100331, 110-033-1, 2730089002, 273-0089-002, 7M637DA1D, 7M637DA-1D, 8071598, 4730-00-187-3575, 00-187-3575, 4730001873575, 001873575

Pipe, Tubing, Hose, and Fittings | Hose, Pipe, Tube, Lubrication, and Railing Fittings

Supply Group (FSG) NSN Assign. NIIN
47 01 JAN 1961 00-187-3575

Demand History | NSN 4730-00-187-3575

Part Number Request Date QTY Origin
1100331 2024-06-17 5 United States
4730-00-187-3575 2024-05-09 428 DIBBS
4730-00-187-3575 2023-11-16 1128 DIBBS
4730-00-187-3575 2022-05-09 341 DIBBS
4730-00-187-3575 2022-04-28 341 DIBBS
4730-00-187-3575 2019-05-02 20 United States
AN9191D 2016-06-16 2 China
4730-00-187-3575 2016-06-05 1103 DIBBS
4730-00-187-3575 2015-05-06 498 DIBBS
AS5174 2013-11-06 6 US
AS4841 2011-03-10 8
4730-00-187-3575 2010-03-12 681 DIBBS
4730-00-187-3575 2008-12-05 113 DIBBS

Cross Reference | NSN 4730-00-187-3575

Part Number Cage Code Manufacturer
110-033-1 97499 BELL HELICOPTER TEXTRON INC.
273-0089-002 94756 BOEING COMPANY, THE DBA BOEING
7M637DA-1D 01673 SPS TECHNOLOGIES, LLC DBA AIRDROME PRECISION COMPONENTS
7M637DA-1D 14798 DESIGNED METAL CONNECTIONS, INC. DBA PERMASWAGE
7M637DA-1D 52930 NELSON AERO SPACE, INC.
8071598 18876 U S ARMY AVIATION AND MISSILE COMMAND
AN919-1D 00624 EATON CORPORATION DBA AEROSPACE DIV
AN919-1D 06581 ALLAN AIRCRAFT SUPPLY CO, LLC
AN919-1D 13899 HYDRO FITTING MANUFACTURING CORPORATION
AN919-1D 14397 FABER ENTERPRISES, INC.
AN919-1D 14798 DESIGNED METAL CONNECTIONS, INC. DBA PERMASWAGE
AN919-1D 22995 CROWN FITTING CO INC
AN919-1D 71563 COLLINS ENGINEERING CORP
AN919-1D 88044 AERONAUTICAL STANDARDS GROUP DEPT OF NAVY AND AIR FORCE
AN919-1D R1120 SATAIR A/S
AS4841 81343 SOCIETY OF AUTOMOTIVE ENGINEERS INC
AS5174 81343 SOCIETY OF AUTOMOTIVE ENGINEERS INC
AS5174D0402 81343 SOCIETY OF AUTOMOTIVE ENGINEERS INC

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Technical Data | NSN 4730-00-187-3575

Characteristic Specifications
MATERIAL ALUMINUM ALLOY 2014 OVERALL
MATERIAL DOCUMENT AND CLASSIFICATION QQ-A-225/4,T4 FED SPEC SINGLE MATERIAL RESPONSE OVERALL
SURFACE TREATMENT ANODIZE OVERALL
CONNECTION TYPE THREADED EXTERNAL BOSS ALL ENDS
CONNECTION STYLE B81 FLARED W/GASKET SEAL ALL ENDS
THREAD SERIES DESIGNATOR UNF ALL ENDS
NOMINAL THREAD SIZE 0.438 INCHES 1ST END 0.312 INCHES 2ND END
THREAD CLASS 3A ALL ENDS
NOMINAL OVERALL LENGTH 1.250 INCHES
REDUCER TYPE CONCENTRIC
FURNISHED ITEMS AND QUANTITY 2 PREFORMED PACKING
SPECIAL FEATURES WEAPON SYSTEM ESSENTIAL
SPECIFICATION/STANDARD DATA 88044-AN919 GOVERNMENT STANDARD
CRITICALITY CODE JUSTIFICATION FEAT
III END ITEM IDENTIFICATION ATTACK HELICOPTER MODEL AH-1S;AIRCRAFT STRATOLIFTER C-135
MANUFACTURERS CODE 88044
DEFINITIVE GOVERNMENT SPEC/STD REFERENCE AN919-1D

Restrictions/Controls & Freight Information | NSN 4730-00-187-3575

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:YThe item does not have a nuclear hardened feature but does have other critical feature(s) such as tolerance, fit restriction or application.
Category Code Description
NMF Description 051400 PIPE FITTINGS ALUMINUM
Less than car load rating
Less than truck load rating P 77.5
Water commodity Code 576 unknown
Originating Activity Code XX
Air Dimension Code A Shipment is not a consolidation and does not exceed 72 inches in any dimension.
Air Commodity B Construction materials: Includes paint and related materials, prefabricated building, wood products, metal and composition materials and their products, commercial hardware and miscellaneous items, cement, asphalt, building maintenance materials.
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 4730-00-187-3575

Category Code Description
Cognizance Codes9BNavy-owned stocks of DLA material
Naval Inventory Control Point, Mechanicsburg
Source of SupplySMSDefense Logistics Agency
Enterprise Business Systems
AgencyDNDepartment of the Navy
Service OrganizationNU.S. Navy
Acquisition Advice CodesDDoD INTEGRATED MATERIEL-MANAGED, STOCKED, AND ISSUED # Issue, transfer, or shipment is not subject to specialized controls other than those imposed by the Integrated Materiel Manager/Service supply policy. 1. The item is centrally managed, stocked, and issued. 2. Requisitions must contain the fund citation required to acquire the item. Requisitions will be submitted in accordance with Integrated Materiel Manager(IMM)/Service requisitioning procedures.
Controlled Item CodeUUNCLASSIFIED
Shelf Life Code0Nondeteriorative
Purchasing QTY
UOM
1
EA : Each