The Adapter,straight,tube to Boss, cataloged under National Stock Number 4730-00-278-9503, 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 24 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through both NSN and commercial part number lookups. 6 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 4730-00-278-9503 |
| Primary Part Number | AS5173D2016 |
| 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 |
| Surface Treatment Document and Classification | MIL-A-8625 MIL SPEC SINGLE TREATMENT RESPONSE OUTSIDE |
| Surface Treatment Document and Classification | MIL-A-8625 MIL SPEC SINGLE TREATMENT RESPONSE INSIDE |
| Connection Style | FLARED (TUBE) FIRST END |
| Connection Style | GASKET SEAL (BOSS) SECOND END |
| Nominal Overall Length | 2.297 INCHES IN |
| Criticality Code Justification | FEAT |
| Connection Type | THREADED EXTERNAL TUBE FIRST END |
| Connection Type | THREADED INTERNAL BOSS SECOND END |
| Material Document and Classification | QQ-A-225/4,T6 FED SPEC SINGLE MATERIAL RESPONSE OR QQ-A-225/6,T6 OR T851 FED SPEC SINGLE MATERIAL RESPONSE OVERALL |
| Nominal Outside Diameter Tube Accommodated | 1.000 INCHES FIRST END IN |
| Nominal Thread Size | 1.625 INCHES SECOND END IN |
| Nominal Thread Size | 1.312 INCHES FIRST END IN |
| Seat Angle | 37.0 DEGREES FIRST END |
| Specification/standard Data | 81343-AS4875/1 PROFESSIONAL/INDUSTRIAL ASSOCIATION STANDARD |
| Surface Treatment | ANODIZE INSIDE |
| Surface Treatment | ANODIZE OUTSIDE |
| Thread Class | 3A FIRST END A |
| Thread Class | 3B SECOND END |
| Thread Quantity Per Inch | 12 SECOND END |
| Thread Quantity Per Inch | 12 FIRST END |
| Material | ALUMINUM ALLOY 2014 OR ALUMINUM ALLOY 2024 OVERALL |
| Thread Series Designator | UNABLE TO DECODE |
| Thread Series Designator | UNIFIED NATIONAL JOINT (UNJ) SECOND END |
| Thread Series Designator | UNIFIED NATIONAL JOINT (UNJ) FIRST END |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL A — No Demilitarization Required |
| Hazard | No hazard code in the DLA record (HMIC N) |
| Criticality Code | Y |
| Part Number | Manufacturer |
|---|---|
| AS5173D2016 PRIMARY | Sae International Dba Sae International (USA) |
| Reference | Meaning |
|---|---|
| AS4875/1 | 5/9 Secondary reference U.S. Government activity |
| AS5173D2016 | 5/9 Secondary reference U.S. Government activity |
| MIL-F-5509 | 5/9 Secondary reference U.S. Government activity |
| AS4875/1 | 5/9 Secondary reference Sae International Dba Sae International |
| AN894D20-16 | 5/9 Secondary reference U.S. Government activity |
| SAE-AS4875/1 | 3/1 Design control — primary reference Sae International Dba Sae International |
NSN 4730-00-278-9503 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 4730-00-278-9503 has 1 manufacturer part number on file: AS5173D2016 (Sae International Dba Sae International).
Key specifications for AS5173D2016: Surface Treatment Document and Classification: MIL-A-8625 MIL SPEC SINGLE TREATMENT RESPONSE OUTSIDE; Surface Treatment Document and Classification: MIL-A-8625 MIL SPEC SINGLE TREATMENT RESPONSE INSIDE; Connection Style: FLARED (TUBE) FIRST END; Connection Style: GASKET SEAL (BOSS) SECOND END. 24 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.