The Adapter,relief Valve,upper Seal, cataloged under National Stock Number 4920-01-209-8972, 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 The Boeing Company Div Legacy Am&m. 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 4920-01-209-8972 |
| Primary Part Number | 41F02000-001 |
| Item Name | Adapter,relief Valve,upper Seal |
| FSC / FSG | 4920 / 49 — Aircraft Maintenance and Repair Shop Specialized Equipment |
| Manufacturer | The Boeing Company Div Legacy Am&m |
| Status | ACTIVE |
| General Characteristics Item Description | ADAPTER IS AN ALUMINUM TUBE 1.500 IN. DIA. WITH A BEADED TUBE END AND AN ALUMINUM PLATE WELDED TO THE TUBE. IT WILL CONTAIN AN AN816-4D OR EQUIVALENT NIPPLE FITTING TO INTERFACE THE ADAPTER TO THE PNEUMATIC COMPONENT TEST STAND 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 |
|---|---|
| 41F02000-001 PRIMARY | The Boeing Company Div Legacy Am&m (USA) |
| Reference | Meaning |
|---|---|
| R-TBD-3346 | 5/9 Secondary reference The Boeing Company Div Legacy Am&m |
NSN 4920-01-209-8972 is a Adapter,relief Valve,upper Seal, manufactured by The Boeing Company Div Legacy Am&m, classified under FSC 4920, Aircraft Maintenance and Repair Shop Specialized Equipment. Status: active.
NSN 4920-01-209-8972 has 1 manufacturer part number on file: 41F02000-001 (The Boeing Company Div Legacy Am&m).
Key specifications for 41F02000-001: General Characteristics Item Description: ADAPTER IS AN ALUMINUM TUBE 1.500 IN. DIA. WITH A BEADED TUBE END AND AN ALUMINUM PLATE WELDED TO THE TUBE. IT WILL CONTAIN AN AN816-4D OR EQUIVALENT NIPPLE FITTING TO INTERFACE THE ADAPTER TO THE PNEUMATIC COMPONENT TEST STAND IN; End Item Identification: B-1B ACFT AGE.. 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.