The Tee,tube to Boss, cataloged under National Stock Number 4730-01-442-2701, is classified within Federal Supply Class 4730 (Hose, Pipe, Tube, Lubrication, and Railing Fittings) of the Pipe, Tubing, Hose, and Fittings group. The manufacturer of record is Sae International Dba Sae International. Government technical data includes 8 specifications, cited from the U.S. Government catalog. The record lists 1 manufacturer part number for this item, enabling identification through both NSN and commercial part number lookups. 5 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 4730-01-442-2701 |
| Primary Part Number | MS21911W8 |
| Item Name | Tee,tube to Boss |
| FSC / FSG | 4730 / 47 — Hose, Pipe, Tube, Lubrication, and Railing Fittings |
| Manufacturer | Sae International Dba Sae International |
| Status | ACTIVE |
| Connection Style | EXTERNAL SEAT FOR GASKET SEAL (BOSS) THIRD END |
| Connection Style | FLARELESS (TUBE) FIRST END |
| Connection Style | GASKET SEAL (BOSS) SECOND END |
| Leg Length | 1.344 INCHES NOMINAL THIRD END IN |
| Leg Length | 1.000 INCHES MINIMUM AND 1.062 INCHES MAXIMUM SECOND END IN |
| Leg Length | 2.031 INCHES MINIMUM AND 2.125 INCHES MAXIMUM FIRST END IN |
| Thread Series Designator | UNIFIED NATIONAL JOINT FINE (UNJF) FIRST END BULKHEAD |
| Thread Series Designator | UNIFIED NATIONAL JOINT FINE (UNJF) ALL ENDS |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL A — No Demilitarization Required |
| Hazard | No hazard code in the DLA record (HMIC N) |
| Criticality Code | X |
| Part Number | Manufacturer |
|---|---|
| MS21911W8 PRIMARY | Sae International Dba Sae International (USA) |
| Reference | Meaning |
|---|---|
| MS21911W8 | 5/9 Secondary reference U.S. Government activity |
| AS21911 | 5/9 Secondary reference Sae International Dba Sae International |
| AS21911 | 5/9 Secondary reference U.S. Government activity |
| SAE-AS18280 | 3/1 Design control — primary reference Sae International Dba Sae International |
| MS21911W8 | 5/9 Secondary reference U.S. Government activity |
NSN 4730-01-442-2701 is a Tee,tube to Boss, manufactured by Sae International Dba Sae International, classified under FSC 4730, Hose, Pipe, Tube, Lubrication, and Railing Fittings. Status: active.
NSN 4730-01-442-2701 has 1 manufacturer part number on file: MS21911W8 (Sae International Dba Sae International).
Key specifications for MS21911W8: Connection Style: EXTERNAL SEAT FOR GASKET SEAL (BOSS) THIRD END; Connection Style: FLARELESS (TUBE) FIRST END; Connection Style: GASKET SEAL (BOSS) SECOND END; Leg Length: 1.344 INCHES NOMINAL THIRD END IN. 8 specifications are documented in the U.S. Government catalog.
No hazard code in the DLA record (HMIC N). Hazard information on this page is shown exactly as it appears in the DLA record.
U.S. Government catalog: edition PUBLOGDVD v12.0.0 (OCT 2026), edition date 2026-10-01, retrieved 2026-10-16.
U.S. Government catalog: edition PUBLOGDVD v12.0.0 (OCT 2026), edition date 2026-10-01, retrieved 2026-10-18.