PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

7891-051REVDPC49Coupling Half,self-Sealing

Electric Boat Corporation Div General Dynamics Electric Boat · NSN 4730-00-613-9863 · FSC 4730 · No Item Name Available
Verified by PartsTable
NSN 4730-00-613-9863 — this item is cataloged by the U.S. Government under National Stock Number 4730-00-613-9863. Primary manufacturer part number: 7891-051REVDPC49.
Features
  • Coupling Half,self-Sealing — FSC 4730
  • Style Designator: MALE COUPLING HALF
  • Mounting Flange Location: FIRST LEG
  • Nominal Thread Size: 1.000 INCHES ALL ENDS IN
  • Nominal Width Across Flats: 1.125 INCHES IN
  • Connection Type: THREADED EXTERNAL BOSS FIRST FLUID END CONNECTION
  • Thread Class: 2A ALL ENDS A
  • Nominal Thickness: 0.188 INCHES IN
Applications
  • Applications requiring Steel Body construction
General Description

The Coupling Half,self-Sealing, cataloged under National Stock Number 4730-00-613-9863, 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 Electric Boat Corporation Div General Dynamics Electric Boat. Government technical data includes 12 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 20 commercial cross-references from 14 manufacturers, enabling identification through both NSN and commercial part number lookups. 5 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.

Technical Specifications
ParameterValue
NSN4730-00-613-9863
Primary Part Number7891-051REVDPC49
Item NameCoupling Half,self-Sealing
FSC / FSG4730 / 47 — No Item Name Available
ManufacturerElectric Boat Corporation Div General Dynamics Electric Boat
StatusACTIVE
Style DesignatorMALE COUPLING HALF
Mounting Flange LocationFIRST LEG
Nominal Thread Size1.000 INCHES ALL ENDS IN
Nominal Width Across Flats1.125 INCHES IN
Connection TypeTHREADED EXTERNAL BOSS FIRST FLUID END CONNECTION
Thread Class2A ALL ENDS A
Nominal Thickness0.188 INCHES IN
Surface TreatmentCADMIUM BODY
Basic Shape StyleHEXAGON W/OUT BOLT HOLES MOUNTING FLANGE
Thread Series DesignatorUNEF ALL ENDS
Connection StyleEXTERNAL SEAT FOR GASKET SEAL ALL ENDS
MaterialSTEEL BODY
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 5
4730-00-051-4675 INTERCHANGEABLE
Coupling Half,self-Sealing
4730-01-180-0926 INTERCHANGEABLE
Coupling Half,self-Sealing
4730-01-201-3921 INTERCHANGEABLE
Coupling Half,self-Sealing
5365-01-580-10563827948 INTERCHANGEABLE
Spacer,plate
Oshkosh Defense Llc
4730-01-609-0401 INTERCHANGEABLE
Coupling,tube
Cross-Reference Index
Part NumberManufacturer
81.98126-0037 Man Truck & Bus Se (DEU)
81981260037 Man Truck & Bus Uk Limited (GBR)
81.98126-0037 Man Truck & Bus Uk Limited (GBR)
81981260037 Man Truck & Bus Se (DEU)
7891-051REVDPC49 PRIMARY Electric Boat Corporation Div General Dynamics Electric Boat (USA)
167869C1 International Harvester Co Agricultural Equipment Div (USA)
586-516-1720482REVAPC49 Naval Ship Systems Command (USA)
586-516-1720482REVAPC49 Naval Sea Systems Command (USA)
10030100 Liebherr-Werk Ehingen Gmbh (DEU)
5400S2-8 Eaton Aeroquip Llc Dba Jackson North 1 Div Fluid and Electrical Distribution (USA)
8691-052REVAPC49 Electric Boat Corporation Div General Dynamics Electric Boat (USA)
578-9200-1572633REVDPC49 Naval Ship Systems Command (USA)
293014796 Noske-Kaeser Germany Gmbh (DEU)
D7650-9 Keco Industries, Inc. (USA)
5400S2-8 Danfoss Power Solutions II, Llc (USA)
73645Q52PCF39 Electric Boat Corporation Div General Dynamics Electric Boat (USA)
5400-S2-8 Eaton Limited (GBR)
FV2110992 Qinetiq (GBR)
167869C1 Navistar Intl Corp Melrose Park Engine Plant Location /melrose Park/ (USA)
578-9200-1572633REVDPC49 Naval Sea Systems Command (USA)
Related Parts
4730-00-051-4675INTERCHANGEABLE
COUPLING HALF,SELF-SEALING
4730-01-180-0926INTERCHANGEABLE
COUPLING HALF,SELF-SEALING
4730-01-201-3921INTERCHANGEABLE
COUPLING HALF,SELF-SEALING
5365-01-580-1056INTERCHANGEABLE
SPACER,PLATE
3827948
4730-01-609-0401INTERCHANGEABLE
COUPLING,TUBE

Frequently Asked Questions

What is NSN 4730-00-613-9863?

NSN 4730-00-613-9863 is a Coupling Half,self-Sealing, manufactured by Electric Boat Corporation Div General Dynamics Electric Boat, classified under FSC 4730 (No Item Name Available). Status: active.

What are the part numbers for NSN 4730-00-613-9863?

NSN 4730-00-613-9863 has 20 cross-referenced part numbers: 81.98126-0037 (Man Truck & Bus Se), 81981260037 (Man Truck & Bus Uk Limited), 81.98126-0037 (Man Truck & Bus Uk Limited), 81981260037 (Man Truck & Bus Se), 7891-051REVDPC49 (Electric Boat Corporation Div General Dynamics Electric Boat) and 15 more.

What NSN replaces 4730-00-613-9863?

There are 5 known substitutes for 4730-00-613-9863: 4730-00-051-4675, 4730-01-180-0926, 4730-01-201-3921 and 2 more. Verify interchangeability with system specifications before substitution.

What are the specifications of 7891-051REVDPC49?

Key specifications for 7891-051REVDPC49: Style Designator: MALE COUPLING HALF; Mounting Flange Location: FIRST LEG; Nominal Thread Size: 1.000 INCHES ALL ENDS IN; Nominal Width Across Flats: 1.125 INCHES IN. 13 total characteristics are documented in the Federal Logistics Information System.

Validated with multiple authoritative sources, including Government, OEM, and Certified sources.
PartsTable Design LLC · partstable.com