The Cylinder Assembly, cataloged under National Stock Number 4920-01-123-7243, 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 Circor Instrumentation Technologies, Inc. Dba Hoke Gyrolok. Government technical data includes 2 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 4920-01-123-7243 |
| Primary Part Number | 4HD1000 |
| Item Name | Cylinder Assembly |
| FSC / FSG | 4920 / 49 — Aircraft Maintenance and Repair Shop Specialized Equipment |
| Manufacturer | Circor Instrumentation Technologies, Inc. Dba Hoke Gyrolok |
| Status | ACTIVE |
| FSC Application Data | STAND,FUEL TANK SERVICING |
| General Characteristics Item Description | MATL: TYPE 304 STAINLESS STEEL SEAMLESS PIPE,SPEC ASTM-A312; 3.500 IN. DIA,10.500 IN. LG,OPERATING PRESSURE: 1800 PSI; CONTAINS TWO SHUT-OFF VALVES 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 |
|---|---|
| 4HD1000 PRIMARY | Circor Instrumentation Technologies, Inc. Dba Hoke Gyrolok (USA) |
| Reference | Meaning |
|---|---|
| C10028-1 | 7/2 Vendor item drawing reference U.S. Government activity |
NSN 4920-01-123-7243 is a Cylinder Assembly, manufactured by Circor Instrumentation Technologies, Inc. Dba Hoke Gyrolok, classified under FSC 4920, Aircraft Maintenance and Repair Shop Specialized Equipment. Status: active.
NSN 4920-01-123-7243 has 1 manufacturer part number on file: 4HD1000 (Circor Instrumentation Technologies, Inc. Dba Hoke Gyrolok).
Key specifications for 4HD1000: FSC Application Data: STAND,FUEL TANK SERVICING; General Characteristics Item Description: MATL: TYPE 304 STAINLESS STEEL SEAMLESS PIPE,SPEC ASTM-A312; 3.500 IN. DIA,10.500 IN. LG,OPERATING PRESSURE: 1800 PSI; CONTAINS TWO SHUT-OFF VALVES IN; End Item Identification: F-16 ACFT AGE.. 2 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.