The Adapter,straight,tube to Boss, cataloged under National Stock Number 4730-00-595-1561, 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 15 specifications, cited from the U.S. Government catalog. The record lists 4 manufacturer part numbers for this item, enabling identification through both NSN and commercial part number lookups. 8 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 4730-00-595-1561 |
| Primary Part Number | MS21915-8-4 |
| Item Name | Adapter,straight,tube to Boss |
| FSC / FSG | 4730 / 47 — Hose, Pipe, Tube, Lubrication, and Railing Fittings |
| Manufacturer | Sae International Dba Sae International |
| Status | ACTIVE |
| Connection Style | FLARELESS (TUBE) FIRST END |
| Connection Style | GASKET SEAL (BOSS) SECOND END |
| Nominal Overall Length | 1.484 INCHES IN |
| Connection Type | THREADED EXTERNAL TUBE FIRST END |
| Connection Type | THREADED INTERNAL BOSS SECOND END |
| Nominal Outside Diameter Tube Accommodated | 0.250 INCHES FIRST END IN |
| Nominal Thread Size | 0.750 INCHES SECOND END IN |
| Nominal Thread Size | 0.438 INCHES FIRST END IN |
| Seat Angle | 12.0 DEGREES FIRST END |
| Specification/standard Data | 96906-MS21915 GOVERNMENT STANDARD |
| Surface Treatment | CADMIUM OVERALL |
| Thread Class | 3A FIRST END A |
| Thread Class | 3B SECOND END |
| 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 |
|---|---|
| MS21915-8-4 | Curtiss-Wright Arresting Systems SAS (FRA) |
| MS21915-8-4 PRIMARY | Sae International Dba Sae International (USA) |
| 04251335200429 | Madax Gmbh (DEU) |
| 04052333006460 | Iss International Spares Services Gmbh (DEU) |
| Reference | Meaning |
|---|---|
| AS18280 | 3/1 Design control — primary reference Sae International Dba Sae International |
| AS21915 | 5/9 Secondary reference U.S. Government activity |
| MS21915-8-4 | 5/9 Secondary reference U.S. Government activity |
| MS21915-8-4 | 5/9 Secondary reference U.S. Government activity |
| 4730PL1589937 | 6/9 Informative reference only Jednolity Indeks Materialowy - Uniform Material Index |
| AS18280 | 5/9 Secondary reference U.S. Government activity |
| MS21915-8-4 | 5/9 Secondary reference Safran Aerosystems |
| AS21915 | 3/1 Design control — primary reference Sae International Dba Sae International |
NSN 4730-00-595-1561 is a Adapter,straight,tube to Boss, manufactured by Sae International Dba Sae International, classified under FSC 4730, Hose, Pipe, Tube, Lubrication, and Railing Fittings. Status: active.
NSN 4730-00-595-1561 has 4 manufacturer part numbers on file: MS21915-8-4 (Curtiss-Wright Arresting Systems SAS), MS21915-8-4 (Sae International Dba Sae International), 04251335200429 (Madax Gmbh), 04052333006460 (Iss International Spares Services Gmbh).
Key specifications for MS21915-8-4: Connection Style: FLARELESS (TUBE) FIRST END; Connection Style: GASKET SEAL (BOSS) SECOND END; Nominal Overall Length: 1.484 INCHES IN; Connection Type: THREADED EXTERNAL TUBE FIRST END. 15 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.