PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

517-5563843 ITEReducer,pipe

Naval Sea Systems Command · NSN 4730-01-012-9451 · FSC 4730 · No Item Name Available
Verified by PartsTable
NSN 4730-01-012-9451 — this item is cataloged by the U.S. Government under National Stock Number 4730-01-012-9451. Primary manufacturer part number: 517-5563843 ITE.
Features
  • Reducer,pipe — FSC 4730
  • Connection Type: UNTHREADED EXTERNAL PIPE SECOND END
  • Specification/standard Data: 81349-MIL-F1183J GOVERNMENT SPECIFICATION
  • Nondefinitive Spec/std Data: 42 SIZE AND A TYPE
  • Reducer Type: CONCENTRIC
  • Connection Type: UNTHREADED INTERNAL PIPE FIRST END
  • Nominal Pipe Size Accommodated: 0.500 INCHES SECOND END IN
  • Connection Style: SOCKET W/ GROVE (PIPE) FIRST END
Applications
  • Fluid conveyance
  • Hydraulic system plumbing
  • Pneumatic line routing
  • Applications requiring Copper Alloy Overall construction
General Description

The Reducer,pipe, cataloged under National Stock Number 4730-01-012-9451, is classified within Federal Supply Class 4730 (No Item Name Available) of the Pipe, Tubing, Hose, and Fittings group. The primary manufacturer of record is Naval Sea Systems Command. Government technical data includes 19 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 11 commercial cross-references from 4 manufacturers, enabling identification through both NSN and commercial part number lookups. 2 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Cancelled.

Technical Specifications
ParameterValue
NSN4730-01-012-9451
Primary Part Number517-5563843 ITE
Item NameReducer,pipe
FSC / FSG4730 / 47 — No Item Name Available
ManufacturerNaval Sea Systems Command
StatusCANCELLED
Connection TypeUNTHREADED EXTERNAL PIPE SECOND END
Specification/standard Data81349-MIL-F1183J GOVERNMENT SPECIFICATION
Nondefinitive Spec/std Data42 SIZE AND A TYPE
Reducer TypeCONCENTRIC
Connection TypeUNTHREADED INTERNAL PIPE FIRST END
Nominal Pipe Size Accommodated0.500 INCHES SECOND END IN
Connection StyleSOCKET W/ GROVE (PIPE) FIRST END
Nominal Overall Length1.060 INCHES IN
Media for Which DesignedSTEAM FIRST RESPONSE
Furnished Items and Quantity1 BRAZING RING
Media for Which DesignedWATER-OIL-GAS SECOND RESPONSE
MaterialCOPPER ALLOY OVERALL
Nominal Pipe Size Accommodated0.250 INCHES FIRST END IN
Maximum Operating Temp425.0 FAHRENHEIT FIRST RESPONSE DEGF
Material Document and ClassificationQQ-C-390 FED SPEC SINGLE MATERIAL RESPONSE OR ASTM B61 ASSN STD SINGLE MATERIAL RESPONSE OR ASTM B62 ASSN STD SINGLE MATERIAL RESPONSE OVERALL
Operating Pressure200.0 POUNDS PER SQUARE INCH (PSI) MAXIMUM FIRST RESPONSE LBS
Connection StylePLAIN (PIPE) SECOND END
Maximum Operating Temp150.0 FAHRENHEIT SECOND RESPONSE DEGF
Operating Pressure400.0 POUNDS PER SQUARE INCH (PSI) MAXIMUM SECOND RESPONSE LBS
Lifecycle & Compliance
Acquisition StatusCANCELLED
HAZMATNo
Verified Substitutes 2
4730-01-248-00519713478 INTERCHANGEABLE
Flange,pipe
Huntington Ingalls Inc Div Newport News Shipbuilding
4730-01-258-10529715627 INTERCHANGEABLE
Elbow,pipe
Huntington Ingalls Inc Div Newport News Shipbuilding
Cross-Reference Index
Part NumberManufacturer
517-5563843 ITE Naval Sea Systems Command (USA)
00699067570115 Flagg Stanley G & Co Inc Dba Flagg Brass (USA)
MIL-DTL-1183/8 Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M
M1183/8-42A Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M
M118318-42A Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M
MIL-F-1183 Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M
2523168 Huntington Ingalls Inc Div Newport News Shipbuilding (USA)
5157-098 Flagg Stanley G & Co Inc Dba Flagg Brass (USA)
517-5563843 Naval Sea Systems Command (USA)
6558-473 Huntington Ingalls Inc Div Newport News Shipbuilding (USA)
517-5563843 ITEM F36 Naval Sea Systems Command (USA)
Related Parts
4730-01-248-0051INTERCHANGEABLE
FLANGE,PIPE
9713478
4730-01-258-1052INTERCHANGEABLE
ELBOW,PIPE
9715627

Frequently Asked Questions

What is NSN 4730-01-012-9451?

NSN 4730-01-012-9451 is a Reducer,pipe, manufactured by Naval Sea Systems Command, classified under FSC 4730 (No Item Name Available). Status: cancelled.

What are the part numbers for NSN 4730-01-012-9451?

NSN 4730-01-012-9451 has 11 cross-referenced part numbers: 517-5563843 ITE (Naval Sea Systems Command), 00699067570115 (Flagg Stanley G & Co Inc Dba Flagg Brass), MIL-DTL-1183/8 (Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M), M1183/8-42A (Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M), M118318-42A (Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M) and 6 more.

What NSN replaces 4730-01-012-9451?

There are 2 known substitutes for 4730-01-012-9451: 4730-01-248-0051, 4730-01-258-1052. Verify interchangeability with system specifications before substitution.

What are the specifications of 517-5563843 ITE?

Key specifications for 517-5563843 ITE: Connection Type: UNTHREADED EXTERNAL PIPE SECOND END; Specification/standard Data: 81349-MIL-F1183J GOVERNMENT SPECIFICATION; Nondefinitive Spec/std Data: 42 SIZE AND A TYPE; Reducer Type: CONCENTRIC. 19 total characteristics are documented in the Federal Logistics Information System.

Is NSN 4730-01-012-9451 still in active supply?

NSN 4730-01-012-9451 is currently cancelled. Check with the Defense Logistics Agency for current availability and authorized substitutes.

Validated with multiple authoritative sources, including Government, OEM, and Certified sources.
PartsTable Design LLC · partstable.com