The Union,hydraulic Swivel, cataloged under National Stock Number 4730-00-004-2852, 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 Northrop Grumman Systems Corporation. Government technical data includes 1 specification, 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through both NSN and commercial part number lookups. 3 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 4730-00-004-2852 |
| Primary Part Number | A51H20509-1 |
| Item Name | Union,hydraulic Swivel |
| FSC / FSG | 4730 / 47 — Hose, Pipe, Tube, Lubrication, and Railing Fittings |
| Manufacturer | Northrop Grumman Systems Corporation |
| Status | ACTIVE |
| General Characteristics Item Description | STEEL,CORROSION RESISTING; PASSIVATE FINISH; 5.249 IN. LG; 2.803 IN. H; 1.124 IN. W IN |
| 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 |
|---|---|
| A51H20509-1 | Kell-Strom Tool International, Inc. (USA) |
| A51H20509-1 PRIMARY | Northrop Grumman Systems Corporation (USA) |
| Reference | Meaning |
|---|---|
| A51H20509-1 | 5/9 Secondary reference Northrop Grumman Systems Corporation |
| A51H20509 | D/9 Drawing number reference only Northrop Grumman Systems Corporation |
| A51H20509-1 | 3/9 Design control — primary reference Northrop Grumman Systems Corporation Dba Northrop Grumman Systems Corp Div Northrop Grumman Aeronautics Systems |
NSN 4730-00-004-2852 is a Union,hydraulic Swivel, manufactured by Northrop Grumman Systems Corporation, classified under FSC 4730, Hose, Pipe, Tube, Lubrication, and Railing Fittings. Status: active.
NSN 4730-00-004-2852 has 2 manufacturer part numbers on file: A51H20509-1 (Kell-Strom Tool International, Inc.), A51H20509-1 (Northrop Grumman Systems Corporation).
Key specifications for A51H20509-1: General Characteristics Item Description: STEEL,CORROSION RESISTING; PASSIVATE FINISH; 5.249 IN. LG; 2.803 IN. H; 1.124 IN. W IN; End Item Identification: GRUMMAN AIRCRAFT,MODEL F-14A A. 1 specification is 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.