The Nut,tube Coupling,reducing, cataloged under National Stock Number 4730-01-176-6732, 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 15 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 7 commercial cross-references from 4 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 | 4730-01-176-6732 |
| Primary Part Number | 2670-57 ITEM 93 |
| Item Name | Nut,tube Coupling,reducing |
| FSC / FSG | 4730 / 47 — No Item Name Available |
| Manufacturer | Huntington Ingalls Inc Div Newport News Shipbuilding |
| Status | ACTIVE |
| Thread Series | UNF |
| Thread Quantity Per Inch | 20 |
| Material | COPPER ALLOY OVERALL |
| Fabrication Method | MACHINED |
| Thread Direction | RIGHT-HAND |
| Nominal Tube Outside Diameter | 0.250 INCHES IN |
| Seat Angle | 45.0 DEGREES NOMINAL |
| Nominal Thread Size | 0.438 INCHES IN |
| Smallest Inside Diameter | 0.188 INCHES NOMINAL IN |
| Nut Style | TUBE COUPLING |
| Thread Class | 2B |
| Specification/standard Data | 81343-J513 PROFESSIONAL/INDUSTRIAL ASSOCIATION STANDARD |
| Width Across Flats | 0.750 INCHES NOMINAL IN |
| Nut Height | 0.594 INCHES NOMINAL IN |
| Nondefinitive Spec/std Data | 36A FIGURE A |
| Acquisition Status | ACTIVE |
| HAZMAT | No |
| Part Number | Manufacturer |
|---|---|
| 2670-57 ITEM 93 | Huntington Ingalls Inc Div Newport News Shipbuilding (USA) |
| 845-2445071ITEM53 | Naval Ship Systems Command (USA) |
| 3-010168B/IRPOD/ | Society of Automotive Engineers Inc (USA) |
| J513 | Society of Automotive Engineers Inc (USA) |
| J513 | Sae International Dba Sae International (USA) |
| 503-4556027 | Huntington Ingalls Inc Div Newport News Shipbuilding (USA) |
| 6502977 | Huntington Ingalls Inc Div Newport News Shipbuilding (USA) |
NSN 4730-01-176-6732 is a Nut,tube Coupling,reducing, manufactured by Huntington Ingalls Inc Div Newport News Shipbuilding, classified under FSC 4730 (No Item Name Available). Status: active.
NSN 4730-01-176-6732 has 7 cross-referenced part numbers: 2670-57 ITEM 93 (Huntington Ingalls Inc Div Newport News Shipbuilding), 845-2445071ITEM53 (Naval Ship Systems Command), 3-010168B/IRPOD/ (Society of Automotive Engineers Inc), J513 (Society of Automotive Engineers Inc), J513 (Sae International Dba Sae International) and 2 more.
There are 12 known substitutes for 4730-01-176-6732: 4730-01-175-1135, 4730-01-175-5443, 4730-01-175-7075 and 9 more. Verify interchangeability with system specifications before substitution.
Key specifications for 2670-57 ITEM 93: Thread Series: UNF; Thread Quantity Per Inch: 20; Material: COPPER ALLOY OVERALL; Fabrication Method: MACHINED. 15 total characteristics are documented in the Federal Logistics Information System.