The Tee,tube, cataloged under National Stock Number 4730-01-343-5446, 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 Sae International Dba Sae International. Government technical data includes 16 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 11 commercial cross-references from 4 manufacturers, enabling identification through both NSN and commercial part number lookups. 11 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 4730-01-343-5446 |
| Primary Part Number | MS21912K12 |
| Item Name | Tee,tube |
| FSC / FSG | 4730 / 47 — No Item Name Available |
| Manufacturer | Sae International Dba Sae International |
| Status | ACTIVE |
| Thread Class | 3A ALL ENDS A |
| Leg Length | 1.625 INCHES NOMINAL SECOND END IN |
| Leg Length | 2.469 INCHES NOMINAL FIRST END IN |
| Thread Series Designator | UN ALL ENDS |
| Nominal Thread Size | 1.062 INCHES ALL ENDS IN |
| Thread Quantity Per Inch | 12 ALL ENDS |
| Seat Angle | 12.0 DEGREES ALL ENDS |
| Nominal Thread Size | 1.062 INCHES FIRST END BULKHEAD IN |
| Leg Length | 1.625 INCHES NOMINAL THIRD END IN |
| Connection Style | FLARELESS (TUBE) ALL ENDS |
| Thread Quantity Per Inch | 12 FIRST END BULKHEAD |
| Material | STEEL COMP 316 OVERALL |
| Thread Class | 31 FIRST END BULKHEAD |
| Nominal Outside Diameter Tube Accommodated | 0.750 INCHES ALL ENDS IN |
| Thread Series Designator | UN FIRST END BULKHEAD |
| Connection Type | THREADED EXTERNAL TUBE ALL ENDS |
| Acquisition Status | ACTIVE |
| HAZMAT | No |
| Part Number | Manufacturer |
|---|---|
| AS21912 | Society of Automotive Engineers Inc (USA) |
| MS21912K12 | Society of Automotive Engineers Inc (USA) |
| 18280 | Society of Automotive Engineers Inc (USA) |
| 21912 | Sae International Dba Sae International (USA) |
| SAE-AS18280 | Sae International Dba Sae International (USA) |
| MS21912K12 PRIMARY | Sae International Dba Sae International (USA) |
| 18280 | Sae International Dba Sae International (USA) |
| 21912 | Society of Automotive Engineers Inc (USA) |
| 157618213 | Leonardo S.p.a. - Electronics Division - Defence Business Area (ITA) |
| AS21912 | Sae International Dba Sae International (USA) |
| MS21912K12 | Military Standards Promulgated by Military Departments Under Authority of Defense Standardization Manual 4120 3-M |
NSN 4730-01-343-5446 is a Tee,tube, manufactured by Sae International Dba Sae International, classified under FSC 4730 (No Item Name Available). Status: active.
NSN 4730-01-343-5446 has 11 cross-referenced part numbers: AS21912 (Society of Automotive Engineers Inc), MS21912K12 (Society of Automotive Engineers Inc), 18280 (Society of Automotive Engineers Inc), 21912 (Sae International Dba Sae International), SAE-AS18280 (Sae International Dba Sae International) and 6 more.
There are 11 known substitutes for 4730-01-343-5446: 4330-00-097-4230, 3110-00-100-2364, 4320-00-126-5239 and 8 more. Verify interchangeability with system specifications before substitution.
Key specifications for MS21912K12: Thread Class: 3A ALL ENDS A; Leg Length: 1.625 INCHES NOMINAL SECOND END IN; Leg Length: 2.469 INCHES NOMINAL FIRST END IN; Thread Series Designator: UN ALL ENDS. 16 total characteristics are documented in the Federal Logistics Information System.