The Union,tube, cataloged under National Stock Number 4730-01-341-0781, 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 Aerofit, Llc. Government technical data includes 19 specifications, cited from the U.S. Government catalog. The record lists 2 manufacturer part numbers for this item, enabling identification through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 4730-01-341-0781 |
| Primary Part Number | AFP224-12 |
| Item Name | Union,tube |
| FSC / FSG | 4730 / 47 — Hose, Pipe, Tube, Lubrication, and Railing Fittings |
| Manufacturer | Aerofit, Llc |
| Status | ACTIVE |
| Furnished Items and Quantity | 1 TUBE COUPLING NUT W/SLEEVE AND 1 UNION NUT AND 1 RETAINING WIRE AND 2 PREFORMED PACKING |
| Connection Style | GROOVED (TUBE) SECOND END |
| Connection Style | FLARELESS (TUBE) FIRST END |
| Tubing Wall Nominal Thickness for Which Designed | 0.630 INCHES SECOND END IN |
| Nominal Overall Length | 3.818 INCHES IN |
| Connection Type | THREADED EXTERNAL TUBE FIRST END |
| Connection Type | UNTHREADED EXTERNAL TUBE SECOND END |
| Style Designator | SCREWED |
| Nominal Outside Diameter Tube Accommodated | 0.750 INCHES SECOND END IN |
| Nominal Outside Diameter Tube Accommodated | 0.750 INCHES FIRST END IN |
| Seat Type | GROOVED |
| Nominal Thread Size | 1.063 INCHES FIRST END IN |
| Seat Angle | 24.0 DEGREES FIRST END |
| Media for Which Designed | AERONAUTICAL FLUID SINGLE RESPONSE |
| Thread Class | 3A FIRST END A |
| Thread Quantity Per Inch | 12 FIRST END |
| Material | STEEL OVERALL |
| Thread Series Designator | UNIFIED NATIONAL JOINT (UNJ) FIRST END |
| Reducer Type | CONCENTRIC |
| 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 |
|---|---|
| AFP224-12-12 | Aerofit, Llc (USA) |
| AFP224-12 PRIMARY | Aerofit, Llc (USA) |
| Reference | Meaning |
|---|---|
| AFP224 | D/9 Drawing number reference only Aerofit, Llc |
NSN 4730-01-341-0781 is a Union,tube, manufactured by Aerofit, Llc, classified under FSC 4730, Hose, Pipe, Tube, Lubrication, and Railing Fittings. Status: active.
NSN 4730-01-341-0781 has 2 manufacturer part numbers on file: AFP224-12-12 (Aerofit, Llc), AFP224-12 (Aerofit, Llc).
Key specifications for AFP224-12: Furnished Items and Quantity: 1 TUBE COUPLING NUT W/SLEEVE AND 1 UNION NUT AND 1 RETAINING WIRE AND 2 PREFORMED PACKING; Connection Style: GROOVED (TUBE) SECOND END; Connection Style: FLARELESS (TUBE) FIRST END; Tubing Wall Nominal Thickness for Which Designed: 0.630 INCHES SECOND END IN. 19 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.