The Nut,tube Coupling, cataloged under National Stock Number 4730-00-202-6538, 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 Rtx Corporation Dba Pratt & Whitney Div Pratt &whitney. Government technical data includes 14 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. 2 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 4730-00-202-6538 |
| Primary Part Number | 227404 |
| Item Name | Nut,tube Coupling |
| FSC / FSG | 4730 / 47 — No Item Name Available |
| Manufacturer | Rtx Corporation Dba Pratt & Whitney Div Pratt &whitney |
| Status | ACTIVE |
| Thread Series | UNF |
| Material | STEEL COMP 303 OR STEEL COMP 303SE OR STEEL COMP 303 PLUS X OVERALL |
| Material Document and Classification | AMS 5640 ASSN STD ALL MATERIAL RESPONSES OVERALL |
| Smallest Inside Diameter | 0.360 INCHES NOMINAL IN |
| Nominal Tube Outside Diameter | 0.250 INCHES IN |
| Seat Angle | 45.00 DEGREES NOMINAL |
| Nominal Thread Size | 0.625 INCHES IN |
| Nut Height | 0.810 INCHES NOMINAL IN |
| Nut Style | TUBE COUPLING |
| Length to Shoulder | 0.670 INCHES NOMINAL IN |
| Width Across Flats | 0.747 INCHES NOMINAL IN |
| Thread Quantity Per Inch | 18 |
| Thread Direction | RIGHT-HAND |
| Thread Class | 3B |
| Acquisition Status | ACTIVE |
| HAZMAT | No |
NSN 4730-00-202-6538 is a Nut,tube Coupling, manufactured by Rtx Corporation Dba Pratt & Whitney Div Pratt &whitney, classified under FSC 4730 (No Item Name Available). Status: active.
NSN 4730-00-202-6538 has 4 cross-referenced part numbers: 227404 (Rtx Corporation Dba Pratt & Whitney Div Pratt &whitney), 227404 (Turbo Power & Marine System Inc Sub of United Technologies Corp), 227404 (Production Services Corp the), 227404 (Simon Paul Boiler and Welding Co).
There are 2 known substitutes for 4730-00-202-6538: 5962-00-341-0544, 5340-01-198-8261. Verify interchangeability with system specifications before substitution.
Key specifications for 227404: Thread Series: UNF; Material: STEEL COMP 303 OR STEEL COMP 303SE OR STEEL COMP 303 PLUS X OVERALL; Material Document and Classification: AMS 5640 ASSN STD ALL MATERIAL RESPONSES OVERALL; Smallest Inside Diameter: 0.360 INCHES NOMINAL IN. 14 total characteristics are documented in the Federal Logistics Information System.