PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

201091Coupling Half,self-Sealing

Mcnally Industries, Llc · NSN 4730-01-225-9016 · FSC 4730 · No Item Name Available
Verified by PartsTable
NSN 4730-01-225-9016 — this item is cataloged by the U.S. Government under National Stock Number 4730-01-225-9016. Primary manufacturer part number: 201091.
Features
  • Coupling Half,self-Sealing — FSC 4730
  • Connection Type: THREADED INTERNAL TUBE FIRST FLUID END CONNECTION
  • Maximum Operating Temp: 120.0 CELSIUS SINGLE RESPONSE DEGC
  • Thread Quantity Per Inch: 12 ALL ENDS
  • Connection Style: INVERTED FLARE ALL ENDS
  • Thread Class: 3B ALL ENDS
  • Operating Pressure: 600.0 POUNDS PER SQUARE INCH (PSI) MAXIMUM SINGLE RESPONSE LBS
  • Media for Which Designed: WATER, SALT SINGLE RESPONSE
Applications
  • Applications requiring Steel Body construction
General Description

The Coupling Half,self-Sealing, cataloged under National Stock Number 4730-01-225-9016, 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 Mcnally Industries, Llc. Government technical data includes 12 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 4 commercial cross-references from 4 manufacturers, enabling identification through both NSN and commercial part number lookups. 8 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.

Technical Specifications
ParameterValue
NSN4730-01-225-9016
Primary Part Number201091
Item NameCoupling Half,self-Sealing
FSC / FSG4730 / 47 — No Item Name Available
ManufacturerMcnally Industries, Llc
StatusACTIVE
Connection TypeTHREADED INTERNAL TUBE FIRST FLUID END CONNECTION
Maximum Operating Temp120.0 CELSIUS SINGLE RESPONSE DEGC
Thread Quantity Per Inch12 ALL ENDS
Connection StyleINVERTED FLARE ALL ENDS
Thread Class3B ALL ENDS
Operating Pressure600.0 POUNDS PER SQUARE INCH (PSI) MAXIMUM SINGLE RESPONSE LBS
Media for Which DesignedWATER, SALT SINGLE RESPONSE
Nominal Thread Size1.312 INCHES ALL ENDS IN
MaterialSTEEL BODY
Seat Angle37.0 DEGREES LOCATION NOT OTHERWISE SPECIFIED
Thread Series DesignatorUNIFIED NATIONAL JOINT (UNJ) ALL ENDS
Style DesignatorMALE COUPLING HALF
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 8
5330-00-311-8165201091 INTERCHANGEABLE
Gasket
Twin Disc, Incorporated Dba Twin Disc Mid-Atlantic
5305-00-693-7770201091 INTERCHANGEABLE
Screw,instrument
Waltham Aircraft Clock Corp
5995-00-753-133920109-1 INTERCHANGEABLE
Wiring Harness,branched
Grimes Aerospace Company
5999-00-831-8762380635-1 INTERCHANGEABLE
Contact,electrical
Te Connectivity Corporation
7035-01-095-315620109-1 INTERCHANGEABLE
Alphanumeric Displa
Smiths Aerospace, Inc., Electronic Systems-Grand Rapids
3040-01-139-6024201091 INTERCHANGEABLE
Shaft,straight
Admiral Filter Company Llc
5935-01-347-3230 INTERCHANGEABLE
Connector,receptacle,electrical
5930-01-351-574780-1091 INTERCHANGEABLE
Switch Subassembly
Fabwright Inc
Cross-Reference Index
Part NumberManufacturer
5520411 Naval Sea Systems Command (USA)
1376-18-407 Bae Systems Land & Armaments L.p. (USA)
4730PL0838705 Jednolity Indeks Materialowy - Uniform Material Index (POL)
201091 PRIMARY Mcnally Industries, Llc (USA)
Related Parts
5330-00-311-8165INTERCHANGEABLE
GASKET
201091
5305-00-693-7770INTERCHANGEABLE
SCREW,INSTRUMENT
201091
5995-00-753-1339INTERCHANGEABLE
WIRING HARNESS,BRANCHED
20109-1
5999-00-831-8762INTERCHANGEABLE
CONTACT,ELECTRICAL
380635-1
7035-01-095-3156INTERCHANGEABLE
ALPHANUMERIC DISPLA
20109-1
3040-01-139-6024INTERCHANGEABLE
SHAFT,STRAIGHT
201091
5935-01-347-3230INTERCHANGEABLE
CONNECTOR,RECEPTACLE,ELECTRICAL
5930-01-351-5747INTERCHANGEABLE
SWITCH SUBASSEMBLY
80-1091

Frequently Asked Questions

What is NSN 4730-01-225-9016?

NSN 4730-01-225-9016 is a Coupling Half,self-Sealing, manufactured by Mcnally Industries, Llc, classified under FSC 4730 (No Item Name Available). Status: active.

What are the part numbers for NSN 4730-01-225-9016?

NSN 4730-01-225-9016 has 4 cross-referenced part numbers: 5520411 (Naval Sea Systems Command), 1376-18-407 (Bae Systems Land & Armaments L.p.), 4730PL0838705 (Jednolity Indeks Materialowy - Uniform Material Index), 201091 (Mcnally Industries, Llc).

What NSN replaces 4730-01-225-9016?

There are 8 known substitutes for 4730-01-225-9016: 5330-00-311-8165, 5305-00-693-7770, 5995-00-753-1339 and 5 more. Verify interchangeability with system specifications before substitution.

What are the specifications of 201091?

Key specifications for 201091: Overall Length: 105.0 MILLIMETERS NOMINAL MM; Connection Type: THREADED INTERNAL TUBE FIRST FLUID END CONNECTION; Maximum Operating Temp: 120.0 CELSIUS SINGLE RESPONSE DEGC; Thread Quantity Per Inch: 12 ALL ENDS. 13 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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