The Plug,tube Fitting,threaded, cataloged under National Stock Number 4730-01-347-8541, is classified within Federal Supply Class 4730 (Hose, Pipe, Tube, Lubrication, and Railing Fittings) of the Pipe, Tubing, Hose, and Fittings group. Government technical data includes 12 specifications, cited from the U.S. Government catalog. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 4730-01-347-8541 |
| Item Name | Plug,tube Fitting,threaded |
| FSC / FSG | 4730 / 47 — Hose, Pipe, Tube, Lubrication, and Railing Fittings |
| Status | ACTIVE |
| Head Height | 0.125 INCHES NOMINAL IN |
| Surface Treatment Document and Classification | QQ-P-353 FED SPEC SINGLE TREATMENT RESPONSE OVERALL |
| Connection Style | FLARELESS |
| Style Designator | PLUG, TUBE FITTING FLARELESS (NOTE: DRILLED HOLE IS OPTIONAL, SHOULD NOT BE CONSIDERED AS A SEPARATING CHARACTERISTIC) |
| Material Document and Classification | QQ-S-764,COND A FED SPEC SINGLE MATERIAL RESPONSE OVERALL |
| Thread Direction | RIGHT-HAND EXTERNAL |
| Nominal Thread Size | 0.562 INCHES EXTERNAL IN |
| Seat Angle | 45.0 DEGREES |
| Surface Treatment | PASSIVATE OVERALL |
| Thread Class | 2A EXTERNAL A |
| Material | STEEL COMP 303 OVERALL |
| Thread Series Designator | UNF EXTERNAL |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL A — No Demilitarization Required |
| Hazard | No hazard code in the DLA record (HMIC N) |
| Criticality Code | X |
| Reference | Meaning |
|---|---|
| 521020 | 3/2 Design control — primary reference U.S. Government activity |
| 521020-1 | C/1 Advisory reference — outside the item-of-supply concept U.S. Government activity |
NSN 4730-01-347-8541 is a Plug,tube Fitting,threaded, classified under FSC 4730, Hose, Pipe, Tube, Lubrication, and Railing Fittings. Status: active.
Key specifications for 4730-01-347-8541: Head Height: 0.125 INCHES NOMINAL IN; Surface Treatment Document and Classification: QQ-P-353 FED SPEC SINGLE TREATMENT RESPONSE OVERALL; Connection Style: FLARELESS; Style Designator: PLUG, TUBE FITTING FLARELESS (NOTE: DRILLED HOLE IS OPTIONAL, SHOULD NOT BE CONSIDERED AS A SEPARATING CHARACTERISTIC). 12 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.