PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

MIL-F-1183HUnion,pipe

Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M · NSN 4730-00-542-5191 · FSC 4730 · No Item Name Available
Verified by PartsTable
NSN 4730-00-542-5191 — this item is cataloged by the U.S. Government under National Stock Number 4730-00-542-5191. Primary manufacturer part number: MIL-F-1183H.
Features
  • Union,pipe — FSC 4730
  • Seat Type: BEVELED
  • Maximum Operating Temp: 150.0 FAHRENHEIT SECOND RESPONSE DEGF
  • Maximum Operating Temp: 425.0 FAHRENHEIT FIRST RESPONSE DEGF
  • Connection Type: UNTHREADED INTERNAL PIPE ALL ENDS
  • Media for Which Designed: WATER-OIL-GAS SECOND RESPONSE
  • Coupling Flange Shape: ROUND
  • Style Designator: SCREWED
Applications
  • Fluid conveyance
  • Hydraulic system plumbing
  • Pneumatic line routing
  • Applications requiring Copper Alloy 903 or Copper Alloy 922 Overall construction
General Description

The Union,pipe, cataloged under National Stock Number 4730-00-542-5191, 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 Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M. Government technical data includes 17 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 12 commercial cross-references from 6 manufacturers, enabling identification through both NSN and commercial part number lookups. 12 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Cancelled.

Technical Specifications
ParameterValue
NSN4730-00-542-5191
Primary Part NumberMIL-F-1183H
Item NameUnion,pipe
FSC / FSG4730 / 47 — No Item Name Available
ManufacturerMilitary Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M
StatusCANCELLED
Seat TypeBEVELED
Maximum Operating Temp150.0 FAHRENHEIT SECOND RESPONSE DEGF
Maximum Operating Temp425.0 FAHRENHEIT FIRST RESPONSE DEGF
Connection TypeUNTHREADED INTERNAL PIPE ALL ENDS
Media for Which DesignedWATER-OIL-GAS SECOND RESPONSE
Coupling Flange ShapeROUND
Style DesignatorSCREWED
Operating Pressure200.0 POUNDS PER SQUARE INCH (PSI) MAXIMUM FIRST RESPONSE LBS
MaterialCOPPER ALLOY 903 OR COPPER ALLOY 922 OVERALL
Media for Which DesignedSTEAM FIRST RESPONSE
Operating Pressure400.0 POUNDS PER SQUARE INCH (PSI) MAXIMUM SECOND RESPONSE LBS
Connection StyleSOCKET W/ GROVE (PIPE) ALL ENDS
Nominal Pipe Size Accommodated0.750 INCHES ALL ENDS IN
Furnished Items and Quantity2 BRAZING RING
Nominal Overall Length2.334 INCHES IN
Material Document and ClassificationQQ-C-390 FED SPEC 1ST MATERIAL RESPONSE OR ASTM-B61 ASSN STD 2ND MATERIAL RESPONSE OVERALL
Specification/standard Data81349-MIL-F-1183J GOVERNMENT SPECIFICATION
Lifecycle & Compliance
Acquisition StatusCANCELLED
HAZMATNo
Verified Substitutes 12
5935-00-192-4789 INTERCHANGEABLE
Jack,telephone
4720-00-477-179520370 INTERCHANGEABLE
Hose,preformed
Gates Corporation
4730-00-542-5101 INTERCHANGEABLE
Coupling,pipe
4730-00-542-5102 INTERCHANGEABLE
Coupling,pipe
4730-00-542-5103 INTERCHANGEABLE
Coupling,pipe
4730-00-542-5104 INTERCHANGEABLE
Coupling,pipe
4730-00-542-5105 INTERCHANGEABLE
Coupling,pipe
4730-00-542-5108 INTERCHANGEABLE
Coupling,pipe
4730-00-542-5192 INTERCHANGEABLE
Union,pipe
4730-00-542-5194 INTERCHANGEABLE
Union,pipe
Cross-Reference Index
Part NumberManufacturer
MIL-F-1183H Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M
150-428GPC370 Hardie-Tynes Co., Inc. (USA)
20-370 Hardie-Tynes Co., Inc. (USA)
389988PC370 Naval Ship Systems Command (USA)
FIG5321-150 Flagg Stanley G & Co Inc Dba Flagg Brass (USA)
4730PL1340684 Jednolity Indeks Materialowy - Uniform Material Index (POL)
MIL-F-1183 Milwaukee Valve Co, Inc Div Milwaukee Valve Company, Llc (USA)
MIL-F-1183/10-13A3 Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M
MIL-DTL-1183/10 Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M
MILF1183 Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M
MIL-F-1183J Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M
M1183/10-13A3 Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M
Related Parts
5935-00-192-4789INTERCHANGEABLE
JACK,TELEPHONE
4720-00-477-1795INTERCHANGEABLE
HOSE,PREFORMED
20370
4730-00-542-5101INTERCHANGEABLE
COUPLING,PIPE
4730-00-542-5102INTERCHANGEABLE
COUPLING,PIPE
4730-00-542-5103INTERCHANGEABLE
COUPLING,PIPE
4730-00-542-5104INTERCHANGEABLE
COUPLING,PIPE
4730-00-542-5105INTERCHANGEABLE
COUPLING,PIPE
4730-00-542-5108INTERCHANGEABLE
COUPLING,PIPE
4730-00-542-5192INTERCHANGEABLE
UNION,PIPE
4730-00-542-5194INTERCHANGEABLE
UNION,PIPE
5940-00-549-1030INTERCHANGEABLE
TERMINAL BOARD
600-JJ-3/4ST-09
4730-01-107-4164INTERCHANGEABLE
UNION,PIPE

Frequently Asked Questions

What is NSN 4730-00-542-5191?

NSN 4730-00-542-5191 is a Union,pipe, manufactured by Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M, classified under FSC 4730 (No Item Name Available). Status: cancelled.

What are the part numbers for NSN 4730-00-542-5191?

NSN 4730-00-542-5191 has 12 cross-referenced part numbers: MIL-F-1183H (Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M), 150-428GPC370 (Hardie-Tynes Co., Inc.), 20-370 (Hardie-Tynes Co., Inc.), 389988PC370 (Naval Ship Systems Command), FIG5321-150 (Flagg Stanley G & Co Inc Dba Flagg Brass) and 7 more.

What NSN replaces 4730-00-542-5191?

There are 12 known substitutes for 4730-00-542-5191: 5935-00-192-4789, 4720-00-477-1795, 4730-00-542-5101 and 9 more. Verify interchangeability with system specifications before substitution.

What are the specifications of MIL-F-1183H?

Key specifications for MIL-F-1183H: Seat Type: BEVELED; Maximum Operating Temp: 150.0 FAHRENHEIT SECOND RESPONSE DEGF; Maximum Operating Temp: 425.0 FAHRENHEIT FIRST RESPONSE DEGF; Connection Type: UNTHREADED INTERNAL PIPE ALL ENDS. 19 total characteristics are documented in the Federal Logistics Information System.

Is NSN 4730-00-542-5191 still in active supply?

NSN 4730-00-542-5191 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.
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