The Union,tube, cataloged under National Stock Number 4730-01-010-9041, 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 9 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through both NSN and commercial part number lookups. 4 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 6 items share a part number with this NSN in the catalog (possible match — not a government interchangeability claim). Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 4730-01-010-9041 |
| Primary Part Number | AS1251K24 |
| Item Name | Union,tube |
| FSC / FSG | 4730 / 47 — Hose, Pipe, Tube, Lubrication, and Railing Fittings |
| Manufacturer | Sae International Dba Sae International |
| Status | ACTIVE |
| Connection Style | FLARED (TUBE) FIRST END |
| Nominal Overall Length | 2.531 INCHES IN |
| Connection Type | THREADED EXTERNAL TUBE FIRST END |
| Material Document and Classification | QQ-S-763,COND A FED SPEC SINGLE MATERIAL RESPONSE OVERALL |
| Nominal Outside Diameter Tube Accommodated | 1.500 INCHES FIRST END IN |
| Seat Angle | 37.0 DEGREES FIRST END |
| Surface Treatment | PASSIVATE OUTSIDE |
| Thread Class | 3A FIRST END A |
| Material | STEEL COMP 316 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 |
|---|---|
| AS1251K24 PRIMARY | Sae International Dba Sae International (USA) |
| Reference | Meaning |
|---|---|
| KC126C24 | C/1 Advisory reference — outside the item-of-supply concept John F Kennedy Space Center Dba Nasa Div Kennedy Space Center |
| AS1251K24 | 3/9 Design control — primary reference U.S. Government activity |
| KC126K24 | C/1 Advisory reference — outside the item-of-supply concept John F Kennedy Space Center Dba Nasa Div Kennedy Space Center |
| SAE-AS1251 | 3/1 Design control — primary reference Sae International Dba Sae International |
NSN 4730-01-010-9041 is a Union,tube, manufactured by Sae International Dba Sae International, classified under FSC 4730, Hose, Pipe, Tube, Lubrication, and Railing Fittings. Status: active.
NSN 4730-01-010-9041 has 1 manufacturer part number on file: AS1251K24 (Sae International Dba Sae International).
6 possible matches (shared part number, not a government interchangeability claim): 4730-01-011-2278, 4730-01-011-2279, 4730-01-086-5730. Verify interchangeability with system specifications before substitution.
Key specifications for AS1251K24: Connection Style: FLARED (TUBE) FIRST END; Nominal Overall Length: 2.531 INCHES IN; Connection Type: THREADED EXTERNAL TUBE FIRST END; Material Document and Classification: QQ-S-763,COND A FED SPEC SINGLE MATERIAL RESPONSE OVERALL. 9 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.