PartsTable TECHNICAL DATA SHEET
Download PDF
NSN 4730-01-299-9490Government record, cited
Home › MRO › Pipe, Tubing, Hose, and Fittings › 4730-01-299-9490

Reducer, Pipe4730-01-299-9490

NSN 4730-01-299-9490 · NIIN 012999490 · Part number 1551AS717-042
Naval Air Systems Command Managed Original Design Activity Not Material/parts Supplier · FSC 4730 — Hose, Pipe, Tube, Lubrication, and Railing Fittings · FSG 47 — Pipe, Tubing, Hose, and Fittings · CAGE 30003
Government record, cited
NSN 4730-01-299-9490 — this item is cataloged by the U.S. Government under National Stock Number 4730-01-299-9490. Manufacturer of record part number: 1551AS717-042.
Also searched as  4730-01-299-9490 · 4730012999490 · NIIN 012999490 · 01-299-9490 · FSC 4730 Hose, Pipe, Tube, Lubrication, and Railing Fittings · CAGE 30003 · 1551AS717-042 · 1551AS717 · 1551AS717 1/2X3/8
Nearby stock numbers  ·
L 0.750 INCHES IN NPT FIRST END HOSE FITTING
4730-01-299-9490 — Hose, Pipe, Tube, Lubrication, and Railing Fittings
Features
  • Reducer,pipe — FSC 4730
  • Connection Style: PLAIN (PIPE) FIRST END
  • Connection Style: PLAIN (PIPE) SECOND END
  • Nominal Overall Length: 0.750 INCHES IN
  • Connection Type: THREADED INTERNAL PIPE FIRST END
  • Connection Type: THREADED EXTERNAL PIPE SECOND END
  • Operating Pressure: 150.0 POUNDS PER SQUARE INCH (PSI) MAXIMUM SINGLE RESPONSE LBS
  • Nominal Thread Size: 0.500 INCHES SECOND END IN
Identification
  • NSN: 4730-01-299-9490
  • NIIN: 012999490
  • FSC: 4730 — Hose, Pipe, Tube, Lubrication, and Railing Fittings
  • FSG: 47 — Pipe, Tubing, Hose, and Fittings
  • Primary part number: 1551AS717-042
  • Manufacturer: Naval Air Systems Command Managed Original Design Activity Not Material/parts Supplier
General Description

The Reducer,pipe, cataloged under National Stock Number 4730-01-299-9490, is classified within Federal Supply Class 4730 (Hose, Pipe, Tube, Lubrication, and Railing Fittings) of the Pipe, Tubing, Hose, and Fittings group. The manufacturer of record is Naval Air Systems Command Managed Original Design Activity Not Material/parts Supplier. Government technical data includes 14 specifications, cited from the U.S. Government catalog. The record lists 2 manufacturer part numbers for this item, enabling identification through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. 7 items share a part number with this NSN in the catalog (possible match — not a government interchangeability claim). Current acquisition status: Active.

Technical Specifications
ParameterValue
NSN4730-01-299-9490
Primary Part Number1551AS717-042
Item NameReducer,pipe
FSC / FSG4730 / 47 — Hose, Pipe, Tube, Lubrication, and Railing Fittings
ManufacturerNaval Air Systems Command Managed Original Design Activity Not Material/parts Supplier
StatusACTIVE
Connection StylePLAIN (PIPE) FIRST END
Connection StylePLAIN (PIPE) SECOND END
Nominal Overall Length0.750 INCHES IN
Connection TypeTHREADED INTERNAL PIPE FIRST END
Connection TypeTHREADED EXTERNAL PIPE SECOND END
Operating Pressure150.0 POUNDS PER SQUARE INCH (PSI) MAXIMUM SINGLE RESPONSE LBS
Nominal Thread Size0.500 INCHES SECOND END IN
Nominal Thread Size0.375 INCHES FIRST END IN
Surface TreatmentZINC OVERALL
Media for Which DesignedSTEAM SINGLE RESPONSE
MaterialIRON OVERALL
Thread Series DesignatorNPT SECOND END
Thread Series DesignatorNPT FIRST END
Reducer TypeCONCENTRIC
Lifecycle & Compliance
Acquisition StatusACTIVE
DEMIL CodeDEMIL A — No Demilitarization Required
HazardNo hazard code in the DLA record (HMIC N)
Criticality CodeX
⇄ Related Items 7
Each row states its source: a government interchangeability/replacement code, or a possible match on a shared part number.
4730-01-299-94911551AS717-074 POSSIBLE MATCH
REDUCER,PIPE
Possible match (shared part number)Naval Air Systems Command Managed Original Design Activity Not Material/parts Supplier
4730-01-299-94921551AS717-092 POSSIBLE MATCH
REDUCER,PIPE
Possible match (shared part number)Naval Air Systems Command Managed Original Design Activity Not Material/parts Supplier
4730-01-299-94931551AS717-104 POSSIBLE MATCH
REDUCER,PIPE
Possible match (shared part number)Naval Air Systems Command Managed Original Design Activity Not Material/parts Supplier
4730-01-300-31751551AS717-273 POSSIBLE MATCH
BUSHING,PIPE
Possible match (shared part number)Naval Air Systems Command Managed Original Design Activity Not Material/parts Supplier
4730-01-300-41251551AS717-023 POSSIBLE MATCH
REDUCER,PIPE
Possible match (shared part number)Naval Air Systems Command Managed Original Design Activity Not Material/parts Supplier
4730-01-300-41261551AS717-054 POSSIBLE MATCH
REDUCER,PIPE
Possible match (shared part number)Naval Air Systems Command Managed Original Design Activity Not Material/parts Supplier
4730-01-372-66811551AS717-094 POSSIBLE MATCH
BUSHING,PIPE
Possible match (shared part number)Naval Air Systems Command Managed Original Design Activity Not Material/parts Supplier
Cross-Reference Index
Part NumberManufacturer
1551AS717 1/2X3/8 Flagg Stanley G & Co Inc Dba Flagg Brass (USA)
1551AS717-042 PRIMARY Naval Air Systems Command Managed Original Design Activity Not Material/parts Supplier (USA)
Reference documents
ReferenceMeaning
1551AS717 D/9 Drawing number reference only
Naval Air Systems Command Managed Original Design Activity Not Material/parts Supplier
Related Parts
4730-01-299-9491POSSIBLE MATCH
REDUCER,PIPE
1551AS717-074
4730-01-299-9492POSSIBLE MATCH
REDUCER,PIPE
1551AS717-092
4730-01-299-9493POSSIBLE MATCH
REDUCER,PIPE
1551AS717-104
4730-01-300-3175POSSIBLE MATCH
BUSHING,PIPE
1551AS717-273
4730-01-300-4125POSSIBLE MATCH
REDUCER,PIPE
1551AS717-023
4730-01-300-4126POSSIBLE MATCH
REDUCER,PIPE
1551AS717-054
4730-01-372-6681POSSIBLE MATCH
BUSHING,PIPE
1551AS717-094

Frequently Asked Questions

What is NSN 4730-01-299-9490?

NSN 4730-01-299-9490 is a Reducer,pipe, manufactured by Naval Air Systems Command Managed Original Design Activity Not Material/parts Supplier, classified under FSC 4730, Hose, Pipe, Tube, Lubrication, and Railing Fittings. Status: active.

What part numbers are listed for NSN 4730-01-299-9490?

NSN 4730-01-299-9490 has 2 manufacturer part numbers on file: 1551AS717 1/2X3/8 (Flagg Stanley G & Co Inc Dba Flagg Brass), 1551AS717-042 (Naval Air Systems Command Managed Original Design Activity Not Material/parts Supplier).

What NSN replaces 4730-01-299-9490?

7 possible matches (shared part number, not a government interchangeability claim): 4730-01-299-9491, 4730-01-299-9492, 4730-01-299-9493. Verify interchangeability with system specifications before substitution.

What are the specifications of 1551AS717-042?

Key specifications for 1551AS717-042: Connection Style: PLAIN (PIPE) FIRST END; Connection Style: PLAIN (PIPE) SECOND END; Nominal Overall Length: 0.750 INCHES IN; Connection Type: THREADED INTERNAL PIPE FIRST END. 14 specifications are documented in the U.S. Government catalog.

Is NSN 4730-01-299-9490 hazardous material?

No hazard code in the DLA record (HMIC N). Hazard information on this page is shown exactly as it appears in the DLA record.

Sources

U.S. Government catalog: edition PUBLOGDVD v12.0.0 (OCT 2026), edition date 2026-10-01, retrieved 2026-10-16.

U.S. Government catalog: edition PUBLOGDVD v12.0.0 (OCT 2026), edition date 2026-10-01, retrieved 2026-10-18.

PartsTable — the parts reference. Every fact cited to its source.
partstable.com/parts/4730-01-299-9490
✓ Data cited from the U.S. Government catalog; commercial cross-references from OEM and certified industry sources.
PartsTable Design LLC · partstable.com
partstable.com · © 2026 PartsTable. Data for reference only.
Home · MRO Catalog · Pipe, Tubing, Hose, and Fittings