PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

S19051Nut,tube Coupling

Bae Systems Land & Armaments L.p. · NSN 4730-00-288-8449 · FSC 4730 · No Item Name Available
Verified by PartsTable
NSN 4730-00-288-8449 — this item is cataloged by the U.S. Government under National Stock Number 4730-00-288-8449. Primary manufacturer part number: S19051.
Features
  • Nut,tube Coupling — FSC 4730
  • Length to Shoulder: 0.969 INCHES NOMINAL IN
  • Seat Angle: 60.00 DEGREES NOMINAL
  • Nominal Thread Size: 1.187 INCHES IN
  • Width Across Flats: 1.375 INCHES NOMINAL IN
  • Material: STEEL OVERALL
  • Thread Class: 2B
  • Thread Direction: RIGHT-HAND
Applications
  • Structural fastening and assembly
  • Equipment mounting
  • Panel and housing attachment
  • Fluid conveyance
  • Hydraulic system plumbing
General Description

The Nut,tube Coupling, cataloged under National Stock Number 4730-00-288-8449, 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 Bae Systems Land & Armaments L.p.. Government technical data includes 15 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 3 commercial cross-references from 3 manufacturers, enabling identification through both NSN and commercial part number lookups. 12 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.

Technical Specifications
ParameterValue
NSN4730-00-288-8449
Primary Part NumberS19051
Item NameNut,tube Coupling
FSC / FSG4730 / 47 — No Item Name Available
ManufacturerBae Systems Land & Armaments L.p.
StatusACTIVE
Length to Shoulder0.969 INCHES NOMINAL IN
Seat Angle60.00 DEGREES NOMINAL
Nominal Thread Size1.187 INCHES IN
Width Across Flats1.375 INCHES NOMINAL IN
MaterialSTEEL OVERALL
Thread Class2B
Thread DirectionRIGHT-HAND
Nut StyleTUBE COUPLING
Smallest Inside Diameter0.783 INCHES NOMINAL IN
Nominal Tube Outside Diameter0.750 INCHES IN
Nut Height1.141 INCHES NOMINAL IN
Surface TreatmentCADMIUM OVERALL
Thread Quantity Per Inch14
Fabrication MethodFORGED OR MACHINED
Thread SeriesUNS
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 12
6625-00-003-097110880 INTERCHANGEABLE
Frequency Meter Matched Set
Creating Technology Solutions, Llc Dba Technology Research Corp Div Technology Research Corp
4730-00-050-4203AS15001-1 INTERCHANGEABLE
Fitting,lubrication
Sae International Dba Sae International
5975-00-194-8878 INTERCHANGEABLE
Junction Box
4730-00-407-1083CS4730-0100 INTERCHANGEABLE
Shield,flange Scree
Dla Land and Maritime Dba Engineering and Technical Support Div Document Standardization Division (vendor Item Drawings)
5910-00-578-174110-81009 INTERCHANGEABLE
Capacitor,fixed,paper Dielectric
Unison Industries Llc
5970-00-581-4726 INTERCHANGEABLE
Insulation Sleeving,electrical
4730-00-701-28873MSC2N-B INTERCHANGEABLE
Adapter,straight,pipe to Tube
Parker-Hannifin Corporation Div Instrumentation Products Division
4130-00-752-9119124173 INTERCHANGEABLE
Filter Element,air Conditioning
Falls Filtration Technologies, Inc.
6125-00-827-7075680-3-334063 INTERCHANGEABLE
Motor-Generator
Cae Usa Inc.
5310-01-102-5379 INTERCHANGEABLE
Nut,self-Locking,hexagon
Cross-Reference Index
Part NumberManufacturer
S19051 Amz Alabama Inc. (USA)
S19051 PRIMARY Bae Systems Land & Armaments L.p. (USA)
30012 Chicago Fittings (USA)
Related Parts
6625-00-003-0971INTERCHANGEABLE
FREQUENCY METER MATCHED SET
10880
4730-00-050-4203INTERCHANGEABLE
FITTING,LUBRICATION
AS15001-1
5975-00-194-8878INTERCHANGEABLE
JUNCTION BOX
4730-00-407-1083INTERCHANGEABLE
SHIELD,FLANGE SCREE
CS4730-0100
5910-00-578-1741INTERCHANGEABLE
CAPACITOR,FIXED,PAPER DIELECTRIC
10-81009
5970-00-581-4726INTERCHANGEABLE
INSULATION SLEEVING,ELECTRICAL
4730-00-701-2887INTERCHANGEABLE
ADAPTER,STRAIGHT,PIPE TO TUBE
3MSC2N-B
4130-00-752-9119INTERCHANGEABLE
FILTER ELEMENT,AIR CONDITIONING
124173
6125-00-827-7075INTERCHANGEABLE
MOTOR-GENERATOR
680-3-334063
5310-01-102-5379INTERCHANGEABLE
NUT,SELF-LOCKING,HEXAGON
5330-01-127-4536INTERCHANGEABLE
SEAL,NONMETALLIC CHANNEL
300-12
5998-01-135-9110INTERCHANGEABLE
CIRCUIT CARD ASSEMBLY

Frequently Asked Questions

What is NSN 4730-00-288-8449?

NSN 4730-00-288-8449 is a Nut,tube Coupling, manufactured by Bae Systems Land & Armaments L.p., classified under FSC 4730 (No Item Name Available). Status: active.

What are the part numbers for NSN 4730-00-288-8449?

NSN 4730-00-288-8449 has 3 cross-referenced part numbers: S19051 (Amz Alabama Inc.), S19051 (Bae Systems Land & Armaments L.p.), 30012 (Chicago Fittings).

What NSN replaces 4730-00-288-8449?

There are 12 known substitutes for 4730-00-288-8449: 6625-00-003-0971, 4730-00-050-4203, 5975-00-194-8878 and 9 more. Verify interchangeability with system specifications before substitution.

What are the specifications of S19051?

Key specifications for S19051: Length to Shoulder: 0.969 INCHES NOMINAL IN; Seat Angle: 60.00 DEGREES NOMINAL; Nominal Thread Size: 1.187 INCHES IN; Width Across Flats: 1.375 INCHES NOMINAL IN. 15 total characteristics are documented in the Federal Logistics Information System.

Validated with multiple authoritative sources, including Government, OEM, and Certified sources.
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