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NSN 4730-01-185-9364Government record, cited
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Nut, Union4730-01-185-9364

NSN 4730-01-185-9364 · NIIN 011859364
FSC 4730 — Hose, Pipe, Tube, Lubrication, and Railing Fittings · FSG 47 — Pipe, Tubing, Hose, and Fittings
Government record, cited
Also searched as  4730-01-185-9364 · 4730011859364 · NIIN 011859364 · 01-185-9364 · FSC 4730 Hose, Pipe, Tube, Lubrication, and Railing Fittings · SS-545-2104397 · SS545-2104397 PC-4 1/4IPS
Nearby stock numbers  ·
⌀1.035 INCHES NOMINAL IN 12 HOSE FITTING
4730-01-185-9364 — Hose, Pipe, Tube, Lubrication, and Railing Fittings
Features
  • Nut,union — FSC 4730
  • Width Across Flats: 1.500 INCHES NOMINAL IN
  • Shoulder Step Width: 0.219 INCHES NOMINAL IN
  • Thread Series: UNF
  • Material Document and Classification: QQ-N-281,CL-B FED SPEC SINGLE MATERIAL RESPONSE OVERALL
  • Maximum Working Pressure Rating and Service for Which Designed: 3000.0 POUNDS PER SQUARE INCH (PSI) AIR AND 3000.0 POUNDS PER SQUARE INCH (PSI) OIL AND 3000.0 POUNDS PER SQUARE INCH (PSI) WATER LBS
  • Thread Direction: RIGHT-HAND
  • Nominal Thread Size: 1.125 INCHES IN
Identification
  • NSN: 4730-01-185-9364
  • NIIN: 011859364
  • FSC: 4730 — Hose, Pipe, Tube, Lubrication, and Railing Fittings
  • FSG: 47 — Pipe, Tubing, Hose, and Fittings
General Description

The Nut,union, cataloged under National Stock Number 4730-01-185-9364, is classified within Federal Supply Class 4730 (Hose, Pipe, Tube, Lubrication, and Railing Fittings) of the Pipe, Tubing, Hose, and Fittings group. Government technical data includes 14 specifications, cited from the U.S. Government catalog. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 9 items share a part number with this NSN in the catalog (possible match — not a government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
NSN4730-01-185-9364
Item NameNut,union
FSC / FSG4730 / 47 — Hose, Pipe, Tube, Lubrication, and Railing Fittings
StatusACTIVE
Width Across Flats1.500 INCHES NOMINAL IN
Shoulder Step Width0.219 INCHES NOMINAL IN
Thread SeriesUNF
Material Document and ClassificationQQ-N-281,CL-B FED SPEC SINGLE MATERIAL RESPONSE OVERALL
Maximum Working Pressure Rating and Service for Which Designed3000.0 POUNDS PER SQUARE INCH (PSI) AIR AND 3000.0 POUNDS PER SQUARE INCH (PSI) OIL AND 3000.0 POUNDS PER SQUARE INCH (PSI) WATER LBS
Thread DirectionRIGHT-HAND
Nominal Thread Size1.125 INCHES IN
Nut Height1.406 INCHES NOMINAL IN
Nut StyleHEXAGON
Thread Class3B
Thread Quantity Per Inch12
MaterialNICKEL ALLOY OVERALL
Smallest Inside Diameter0.672 INCHES NOMINAL IN
Shoulder Seat Diameter1.035 INCHES NOMINAL IN
Lifecycle & Compliance
Acquisition StatusACTIVE
DEMIL CodeDEMIL A — No Demilitarization Required
HazardNo hazard code in the DLA record (HMIC N)
Criticality CodeX
⇄ Related Items 9
Each row states its source: a government interchangeability/replacement code, or a possible match on a shared part number.
4730-01-185-9365SS545-2104397 PC-4 3/8IPS POSSIBLE MATCH
NUT,UNION
Possible match (shared part number)Naval Ship Systems Command
4730-01-185-9366SS545-2104397 PC-4 3/4IPS POSSIBLE MATCH
NUT,UNION
Possible match (shared part number)Naval Ship Systems Command
4730-01-186-0681SS545-2104397 PC-4 1 IPS POSSIBLE MATCH
NUT,UNION
Possible match (shared part number)Naval Ship Systems Command
4730-01-195-6394SS-545-2104397 PC 3.1/4 IN IPS POSSIBLE MATCH
TAILPIECE,UNION
Possible match (shared part number)Naval Sea Systems Command
4730-01-195-6395SS-545-2104397 PC 3.3/8 IN IPS POSSIBLE MATCH
TAILPIECE,UNION
Possible match (shared part number)Naval Sea Systems Command
4730-01-195-6396SS-545-2104397 PC 3.1/2 IN IPS POSSIBLE MATCH
TAILPIECE,UNION
Possible match (shared part number)Naval Sea Systems Command
4730-01-195-6397SS-545-2104397 PC 1.1/4 IN IPS POSSIBLE MATCH
THREAD PIECE,UNION
Possible match (shared part number)Naval Sea Systems Command
4730-01-196-9211SS-545-2104397 PC 3.3/4 IN IPS POSSIBLE MATCH
TAILPIECE,UNION
Possible match (shared part number)Naval Ship Systems Command
4730-01-196-9213SS-545-2104397 PC 1.1/2 IN IPS POSSIBLE MATCH
THREAD PIECE,UNION
Possible match (shared part number)Naval Ship Systems Command
Cross-Reference Index
No manufacturer part numbers on file in the U.S. Government catalog.
Reference documents
ReferenceMeaning
SS-545-2104397 D/9 Drawing number reference only
U.S. Government activity
SS545-2104397 PC-4 1/4IPS 3/2 Design control — primary reference
U.S. Government activity
Related Parts
4730-01-185-9365POSSIBLE MATCH
NUT,UNION
SS545-2104397 PC-4 3/8IPS
4730-01-185-9366POSSIBLE MATCH
NUT,UNION
SS545-2104397 PC-4 3/4IPS
4730-01-186-0681POSSIBLE MATCH
NUT,UNION
SS545-2104397 PC-4 1 IPS
4730-01-195-6394POSSIBLE MATCH
TAILPIECE,UNION
SS-545-2104397 PC 3.1/4 IN IPS
4730-01-195-6395POSSIBLE MATCH
TAILPIECE,UNION
SS-545-2104397 PC 3.3/8 IN IPS
4730-01-195-6396POSSIBLE MATCH
TAILPIECE,UNION
SS-545-2104397 PC 3.1/2 IN IPS
4730-01-195-6397POSSIBLE MATCH
THREAD PIECE,UNION
SS-545-2104397 PC 1.1/4 IN IPS
4730-01-196-9211POSSIBLE MATCH
TAILPIECE,UNION
SS-545-2104397 PC 3.3/4 IN IPS
4730-01-196-9213POSSIBLE MATCH
THREAD PIECE,UNION
SS-545-2104397 PC 1.1/2 IN IPS

Frequently Asked Questions

What is NSN 4730-01-185-9364?

NSN 4730-01-185-9364 is a Nut,union, classified under FSC 4730, Hose, Pipe, Tube, Lubrication, and Railing Fittings. Status: active.

What NSN replaces 4730-01-185-9364?

9 possible matches (shared part number, not a government interchangeability claim): 4730-01-185-9365, 4730-01-185-9366, 4730-01-186-0681. Verify interchangeability with system specifications before substitution.

What are the specifications of 4730-01-185-9364?

Key specifications for 4730-01-185-9364: Width Across Flats: 1.500 INCHES NOMINAL IN; Shoulder Step Width: 0.219 INCHES NOMINAL IN; Thread Series: UNF; Material Document and Classification: QQ-N-281,CL-B FED SPEC SINGLE MATERIAL RESPONSE OVERALL. 14 specifications are documented in the U.S. Government catalog.

Is NSN 4730-01-185-9364 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.

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✓ Data cited from the U.S. Government catalog; commercial cross-references from OEM and certified industry sources.
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