The Coupling, cataloged under National Stock Number 4920-00-511-8410, is classified within Federal Supply Class 4920 (Aircraft Maintenance and Repair Shop Specialized Equipment) of the Maintenance and Repair Shop Equipment group. The manufacturer of record is Hydraulics International, Inc. Dba Hydraulics International Inc. Government technical data includes 1 specification, 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through both NSN and commercial part number lookups. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 4920-00-511-8410 |
| Primary Part Number | BT320-298 |
| Item Name | Coupling |
| FSC / FSG | 4920 / 49 — Aircraft Maintenance and Repair Shop Specialized Equipment |
| Manufacturer | Hydraulics International, Inc. Dba Hydraulics International Inc |
| Status | ACTIVE |
| General Characteristics Item Description | STEEL,SAE 4820; CADMIUM PLATE FINISH PER QQ-P-416; O/A DIM. 2.000 IN. DIA; 3.531 IN. LG 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 |
|---|---|
| BT320-298 PRIMARY | Hydraulics International, Inc. Dba Hydraulics International Inc (USA) |
| Reference | Meaning |
|---|---|
| BT320-298 | 5/9 Secondary reference Parker-Hannifin Corporation Div Hydraulic Accumulator Division |
| 1041 | 5/9 Secondary reference Parker-Hannifin Corporation Div Hydraulic Accumulator Division |
NSN 4920-00-511-8410 is a Coupling, manufactured by Hydraulics International, Inc. Dba Hydraulics International Inc, classified under FSC 4920, Aircraft Maintenance and Repair Shop Specialized Equipment. Status: active.
NSN 4920-00-511-8410 has 1 manufacturer part number on file: BT320-298 (Hydraulics International, Inc. Dba Hydraulics International Inc).
Key specifications for BT320-298: General Characteristics Item Description: STEEL,SAE 4820; CADMIUM PLATE FINISH PER QQ-P-416; O/A DIM. 2.000 IN. DIA; 3.531 IN. LG IN. 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.