The Union,tube, cataloged under National Stock Number 4730-00-204-1972, 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 11 specifications, cited from the U.S. Government catalog. The record lists 3 manufacturer part numbers for this item, enabling identification through both NSN and commercial part number lookups. 6 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 4730-00-204-1972 |
| Primary Part Number | AS21902-8 |
| Item Name | Union,tube |
| FSC / FSG | 4730 / 47 — Hose, Pipe, Tube, Lubrication, and Railing Fittings |
| Manufacturer | Sae International Dba Sae International |
| Status | ACTIVE |
| Surface Treatment Document and Classification | QQ-P-416,TYPE 1,CLASS 2 FED SPEC SINGLE TREATMENT RESPONSE OVERALL |
| Connection Style | EXTERNAL SEAT FOR GASKET SEAL (BOSS) ALL ENDS |
| Nominal Overall Length | 1.375 INCHES IN |
| Connection Type | THREADED EXTERNAL BOSS ALL ENDS |
| Style Designator | FLARELESS W/ CENTER WRENCHING FACILITY |
| Nominal Thread Size | 0.750 INCHES ALL ENDS IN |
| Specification/standard Data | 96906-MS21902 GOVERNMENT STANDARD |
| Surface Treatment | CADMIUM OVERALL |
| Thread Class | 3A ALL ENDS A |
| Material | STEEL OVERALL |
| 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 |
|---|---|
| AS21902-8 PRIMARY | Sae International Dba Sae International (USA) |
| MS21902-8 | Goodrich Actuation Systems Ltd (GBR) |
| MS21902-8 | Sae International Dba Sae International (USA) |
| Reference | Meaning |
|---|---|
| AS21902-8 | 3/9 Design control — primary reference U.S. Government activity |
| MS21902-8 | 5/9 Secondary reference Claverham Ltd |
| SAE-AS18280 | 3/1 Design control — primary reference Sae International Dba Sae International |
| MS21902-8 | 5/9 Secondary reference U.S. Government activity |
| 4730002041972 | 6/9 Informative reference only E.c.a Etablissement Central Des Approvisionnements Des Forces Armees Royales |
| MS21902-8 | 5/9 Secondary reference U.S. Government activity |
NSN 4730-00-204-1972 is a Union,tube, manufactured by Sae International Dba Sae International, classified under FSC 4730, Hose, Pipe, Tube, Lubrication, and Railing Fittings. Status: active.
NSN 4730-00-204-1972 has 3 manufacturer part numbers on file: AS21902-8 (Sae International Dba Sae International), MS21902-8 (Goodrich Actuation Systems Ltd), MS21902-8 (Sae International Dba Sae International).
Key specifications for AS21902-8: Surface Treatment Document and Classification: QQ-P-416,TYPE 1,CLASS 2 FED SPEC SINGLE TREATMENT RESPONSE OVERALL; Connection Style: EXTERNAL SEAT FOR GASKET SEAL (BOSS) ALL ENDS; Nominal Overall Length: 1.375 INCHES IN; Connection Type: THREADED EXTERNAL BOSS ALL ENDS. 11 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.