The Cross,pipe, cataloged under National Stock Number 4730-00-255-8257, 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 Naval Air Systems Command Managed Original Design Activity Not Material/parts Supplier. Government technical data includes 18 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 10 commercial cross-references from 9 manufacturers, enabling identification through both NSN and commercial part number lookups. 12 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Cancelled.
| Parameter | Value |
|---|---|
| NSN | 4730-00-255-8257 |
| Primary Part Number | 1551AS294 |
| Item Name | Cross,pipe |
| FSC / FSG | 4730 / 47 — No Item Name Available |
| Manufacturer | Naval Air Systems Command Managed Original Design Activity Not Material/parts Supplier |
| Status | CANCELLED |
| Connection Type | THREADED INTERNAL PIPE ALL ENDS |
| Surface Treatment Document and Classification | QQ-Z-325,TY 1 FED SPEC SINGLE TREATMENT RESPONSE INSIDE |
| Maximum Operating Temp | 260.0 FAHRENHEIT FIRST RESPONSE DEGF |
| Leg Length | 1.310 INCHES NOMINAL ALL ENDS IN |
| Media for Which Designed | STEAM FIRST RESPONSE |
| Connection Style | PLAIN (PIPE) ALL ENDS |
| Surface Treatment | ZINC INSIDE |
| Nominal Pipe Size Accommodated | 0.750 INCHES FIRST END IN |
| Maximum Operating Temp | 65.6 FAHRENHEIT SECOND RESPONSE DEGF |
| Media for Which Designed | WATER-OIL-GAS SECOND RESPONSE |
| Surface Treatment | ZINC OUTSIDE |
| Nominal Thread Size | 0.750 INCHES ALL ENDS IN |
| Operating Pressure | 300.0 POUNDS PER SQUARE INCH (PSI) MAXIMUM SINGLE RESPONSE LBS |
| Surface Treatment Document and Classification | QQ-Z-325,TY 1 FED SPEC SINGLE TREATMENT RESPONSE OUTSIDE |
| Thread Series Designator | NPT FIRST END |
| Material Document and Classification | ASTM A197 ASSN STD SINGLE MATERIAL RESPONSE OVERALL |
| Material | IRON OVERALL |
| Nondefinitive Spec/std Data | 2 TYPE |
| Acquisition Status | CANCELLED |
| HAZMAT | No |
| Part Number | Manufacturer |
|---|---|
| 1551AS294 | Naval Air Systems Command Managed Original Design Activity Not Material/parts Supplier (USA) |
| 661 3-4 | Stockham Valves and Fittings Inc (USA) |
| 1551AS294-6X05 | Flagg Stanley G & Co Inc Dba Flagg Brass (USA) |
| BM11359-01C03 | Demarkus Corp Refrigeration Engineering Corp (USA) |
| WWP521 | Federal Specifications Promulgated by General Services Administration Washington DC (USA) |
| 5905A6C | Hamilton Sundstrand Corporation (USA) |
| ASME B16.3 | The American Society of Mechanical Engineers (USA) |
| WWP521 | Allied Plumbing Sales Co Inc (USA) |
| 1107 3-4IN | Itt Grinnell Corp (USA) |
| 1551AS294-6052 | Naval Air Systems Command Managed Original Design Activity Not Material/parts Supplier (USA) |
NSN 4730-00-255-8257 is a Cross,pipe, manufactured by Naval Air Systems Command Managed Original Design Activity Not Material/parts Supplier, classified under FSC 4730 (No Item Name Available). Status: cancelled.
NSN 4730-00-255-8257 has 10 cross-referenced part numbers: 1551AS294 (Naval Air Systems Command Managed Original Design Activity Not Material/parts Supplier), 661 3-4 (Stockham Valves and Fittings Inc), 1551AS294-6X05 (Flagg Stanley G & Co Inc Dba Flagg Brass), BM11359-01C03 (Demarkus Corp Refrigeration Engineering Corp), WWP521 (Federal Specifications Promulgated by General Services Administration Washington DC) and 5 more.
There are 12 known substitutes for 4730-00-255-8257: 5120-00-230-3670, 6150-00-505-1575, 4730-01-300-4093 and 9 more. Verify interchangeability with system specifications before substitution.
Key specifications for 1551AS294: Connection Type: THREADED INTERNAL PIPE ALL ENDS; Surface Treatment Document and Classification: QQ-Z-325,TY 1 FED SPEC SINGLE TREATMENT RESPONSE INSIDE; Maximum Operating Temp: 260.0 FAHRENHEIT FIRST RESPONSE DEGF; Leg Length: 1.310 INCHES NOMINAL ALL ENDS IN. 18 total characteristics are documented in the Federal Logistics Information System.
NSN 4730-00-255-8257 is currently cancelled. Check with the Defense Logistics Agency for current availability and authorized substitutes.