The Coupling Half,self-Sealing, cataloged under National Stock Number 4730-01-180-0926, 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 Huntington Ingalls Inc Div Newport News Shipbuilding. Government technical data includes 11 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 6 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.
| Parameter | Value |
|---|---|
| NSN | 4730-01-180-0926 |
| Primary Part Number | 503-4556027 |
| Item Name | Coupling Half,self-Sealing |
| FSC / FSG | 4730 / 47 — No Item Name Available |
| Manufacturer | Huntington Ingalls Inc Div Newport News Shipbuilding |
| Status | ACTIVE |
| Operating Pressure | 1750.0 POUNDS PER SQUARE INCH (PSI) MAXIMUM SINGLE RESPONSE LBS |
| Nominal Thread Size | 0.750 INCHES ALL ENDS IN |
| Surface Treatment | ZINC OR CADMIUM BODY |
| Thread Series Designator | UNF ALL ENDS |
| Features Provided | SELF-SEALING |
| Thread Class | 2B ALL ENDS |
| Connection Type | THREADED INTERNAL BOSS FIRST FLUID END CONNECTION |
| Connection Style | BOSS GASKET SEAL ALL ENDS |
| Reference Number Differentiating Characteristics | AS DIFFERENTIATED BY FREE FROM MERCURY CONTAMINATION |
| Style Designator | MALE COUPLING HALF |
| Material | STEEL BODY |
| Acquisition Status | ACTIVE |
| HAZMAT | No |
| Part Number | Manufacturer |
|---|---|
| 503-4556027 | Huntington Ingalls Inc Div Newport News Shipbuilding (USA) |
| 2670-57 | Huntington Ingalls Inc Div Newport News Shipbuilding (USA) |
| 2670-57 ITEM 9 | Huntington Ingalls Inc Div Newport News Shipbuilding (USA) |
| 5400-S2-8 | Danfoss Power Solutions II, Llc (USA) |
| 5400-S2-8 | Eaton Aeroquip Llc Dba Jackson North 1 Div Fluid and Electrical Distribution (USA) |
| 2670-57 PC9 | Huntington Ingalls Inc Div Newport News Shipbuilding (USA) |
NSN 4730-01-180-0926 is a Coupling Half,self-Sealing, manufactured by Huntington Ingalls Inc Div Newport News Shipbuilding, classified under FSC 4730 (No Item Name Available). Status: active.
NSN 4730-01-180-0926 has 6 cross-referenced part numbers: 503-4556027 (Huntington Ingalls Inc Div Newport News Shipbuilding), 2670-57 (Huntington Ingalls Inc Div Newport News Shipbuilding), 2670-57 ITEM 9 (Huntington Ingalls Inc Div Newport News Shipbuilding), 5400-S2-8 (Danfoss Power Solutions II, Llc), 5400-S2-8 (Eaton Aeroquip Llc Dba Jackson North 1 Div Fluid and Electrical Distribution) and 1 more.
There are 12 known substitutes for 4730-01-180-0926: 4730-00-051-4675, 6930-00-346-7188, 4730-00-477-5072 and 9 more. Verify interchangeability with system specifications before substitution.
Key specifications for 503-4556027: Operating Pressure: 1750.0 POUNDS PER SQUARE INCH (PSI) MAXIMUM SINGLE RESPONSE LBS; Nominal Thread Size: 0.750 INCHES ALL ENDS IN; Surface Treatment: ZINC OR CADMIUM BODY; Special Features: FOR NAVY NUCLEAR PROPULSION PLANT PRODUCTS ONLY. 13 total characteristics are documented in the Federal Logistics Information System.