The Union,pipe, cataloged under National Stock Number 4730-01-633-0835, 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 5 manufacturer part numbers for this item, enabling identification through both NSN and commercial part number lookups. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 4730-01-633-0835 |
| Primary Part Number | AS4406W0404 |
| Item Name | Union,pipe |
| FSC / FSG | 4730 / 47 — Hose, Pipe, Tube, Lubrication, and Railing Fittings |
| Manufacturer | Sae International Dba Sae International |
| Status | ACTIVE |
| Surface Treatment Document and Classification | AMS2488 ASSN STD SINGLE TREATMENT RESPONSE OVERALL |
| Connection Style | SWIVEL NUT, FLARE (TUBE) STYLE 3 OPTIONAL END ALL ENDS |
| Connection Type | THREADED INTERNAL TUBE ALL ENDS |
| Material Document and Classification | AMS4124 ASSN STD SINGLE MATERIAL RESPONSE OR AMS-QQ-A-225/9 ASSN STD SINGLE MATERIAL RESPONSE OVERALL |
| Nominal Outside Diameter Tube Accommodated | 0.250 INCHES ALL ENDS IN |
| Nominal Thread Size | 0.4375 INCHES ALL ENDS IN |
| Seat Angle | 37.0 DEGREES ALL ENDS |
| Surface Treatment | ANODIZE OVERALL |
| Thread Class | 3A ALL ENDS A |
| Thread Quantity Per Inch | 20 ALL ENDS |
| Material | ALUMINUM ALLOY 7075 OVERALL |
| 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 |
|---|---|
| AS4406W0404 | Aerofit, Llc (USA) |
| AS4406W0404 | Precision Aircraft Machining Company, Inc. Dba Pamco Div Precision Aircraft Machining Co Dba Pamco (USA) |
| AS4406W0404 | Nelson Aero Space, Inc. (USA) |
| AS4406W0404 | Sps Technologies, Llc Dba Airdrome Precision Components (USA) |
| AS4406W0404 PRIMARY | Sae International Dba Sae International (USA) |
| Reference | Meaning |
|---|---|
| SAE-AS4841 | 3/1 Design control — primary reference Sae International Dba Sae International |
| AS4406W0404 | 5/9 Secondary reference U.S. Government activity |
NSN 4730-01-633-0835 is a Union,pipe, manufactured by Sae International Dba Sae International, classified under FSC 4730, Hose, Pipe, Tube, Lubrication, and Railing Fittings. Status: active.
NSN 4730-01-633-0835 has 5 manufacturer part numbers on file: AS4406W0404 (Aerofit, Llc), AS4406W0404 (Precision Aircraft Machining Company, Inc. Dba Pamco Div Precision Aircraft Machining Co Dba Pamco), AS4406W0404 (Nelson Aero Space, Inc.), AS4406W0404 (Sps Technologies, Llc Dba Airdrome Precision Components), AS4406W0404 (Sae International Dba Sae International).
Key specifications for AS4406W0404: Surface Treatment Document and Classification: AMS2488 ASSN STD SINGLE TREATMENT RESPONSE OVERALL; Connection Style: SWIVEL NUT, FLARE (TUBE) STYLE 3 OPTIONAL END ALL ENDS; Connection Type: THREADED INTERNAL TUBE ALL ENDS; Material Document and Classification: AMS4124 ASSN STD SINGLE MATERIAL RESPONSE OR AMS-QQ-A-225/9 ASSN STD 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.