The Plug,tube Fitting,threaded, cataloged under National Stock Number 4730-00-203-6938, 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 1 manufacturer part number 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through both NSN and commercial part number lookups. 8 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 1 item shares a part number with this NSN in the catalog (possible match — not a government interchangeability claim). Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 4730-00-203-6938 |
| Primary Part Number | MS21913D16 |
| Item Name | Plug,tube Fitting,threaded |
| FSC / FSG | 4730 / 47 — Hose, Pipe, Tube, Lubrication, and Railing Fittings |
| Manufacturer | Sae International Dba Sae International |
| Status | ACTIVE |
| Head Height | 0.375 INCHES NOMINAL IN |
| Criticality Code Justification | FEAT |
| Style Designator | PLUG, TUBE FITTING FLARELESS (NOTE: DRILLED HOLE IS OPTIONAL, SHOULD NOT BE CONSIDERED AS A SEPARATING CHARACTERISTIC) |
| Material Document and Classification | QQ-A-225/6,T6 FED SPEC SINGLE MATERIAL RESPONSE OVERALL |
| Thread Direction | RIGHT-HAND EXTERNAL |
| Nominal Thread Size | 1.312 INCHES EXTERNAL IN |
| Seat Angle | 12.0 DEGREES |
| Specification/standard Data | 96906-MS21913 GOVERNMENT STANDARD |
| Surface Treatment | ANODIZE OVERALL |
| Thread Quantity Per Inch | 12 EXTERNAL |
| Material | ALUMINUM ALLOY 2024 OVERALL |
| 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 |
|---|---|
| MS21913D16 PRIMARY | Sae International Dba Sae International (USA) |
| Reference | Meaning |
|---|---|
| MS21913D16 | 5/9 Secondary reference U.S. Government activity |
| AS18280 | 5/9 Secondary reference U.S. Government activity |
| MS21913D16 | 5/9 Secondary reference U.S. Government activity |
| MIL-F-18280 | 5/9 Secondary reference U.S. Government activity |
| AS21913 | 5/9 Secondary reference Sae International Dba Sae International |
| AS18280 | 5/9 Secondary reference Sae International Dba Sae International |
| AS21913 | 5/9 Secondary reference U.S. Government activity |
| SAE-AS18280 | 3/1 Design control — primary reference Sae International Dba Sae International |
NSN 4730-00-203-6938 is a Plug,tube Fitting,threaded, manufactured by Sae International Dba Sae International, classified under FSC 4730, Hose, Pipe, Tube, Lubrication, and Railing Fittings. Status: active.
NSN 4730-00-203-6938 has 1 manufacturer part number on file: MS21913D16 (Sae International Dba Sae International).
1 possible match (shared part number, not a government interchangeability claim): 4730-00-555-7804. Verify interchangeability with system specifications before substitution.
Key specifications for MS21913D16: Head Height: 0.375 INCHES NOMINAL IN; Criticality Code Justification: FEAT; Style Designator: PLUG, TUBE FITTING FLARELESS (NOTE: DRILLED HOLE IS OPTIONAL, SHOULD NOT BE CONSIDERED AS A SEPARATING CHARACTERISTIC); Material Document and Classification: QQ-A-225/6,T6 FED SPEC SINGLE MATERIAL RESPONSE OVERALL. 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.