The Adapter Assembly,interface Devic, cataloged under National Stock Number 4920-01-172-0135, 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 2 specifications, 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. 1 item shares a part number with this NSN in the catalog (possible match — not a government interchangeability claim). Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 4920-01-172-0135 |
| Primary Part Number | 85158 |
| Item Name | Adapter Assembly,interface Devic |
| FSC / FSG | 4920 / 49 — Aircraft Maintenance and Repair Shop Specialized Equipment |
| Manufacturer | The Boeing Company Div Legacy Am&m |
| Status | ACTIVE |
| Supplementary Features | COMPANY ITEM NAME-ADAPTER ASSEMBLY, BLEED AIR VALVE |
| Functional Description | C/O CLOSEOUT FIXTURE 1,CLAMP 1,ADAPTER 1;USED TO INTERFACE BLEED AIR VALVE INLET PORT TO PNEUMATIC COMPONENTS TEST STAND DURING PROOF PRESSURE AND LEAKAGE TESTS,STATIC OPERATIONAL TESTS,AND ELECTRICAL TESTS AT DEPOT MAINTENANCE LEVEL |
| 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 |
|---|---|
| 85158 PRIMARY | The Boeing Company Div Legacy Am&m (USA) |
| 41B08000-001 | The Boeing Company Div Legacy Am&m (USA) |
| Reference | Meaning |
|---|---|
| R-TBD-803 | 5/9 Secondary reference The Boeing Company Div Legacy Am&m |
NSN 4920-01-172-0135 is a Adapter Assembly,interface Devic, manufactured by The Boeing Company Div Legacy Am&m, classified under FSC 4920, Aircraft Maintenance and Repair Shop Specialized Equipment. Status: active.
NSN 4920-01-172-0135 has 2 manufacturer part numbers on file: 85158 (The Boeing Company Div Legacy Am&m), 41B08000-001 (The Boeing Company Div Legacy Am&m).
1 possible match (shared part number, not a government interchangeability claim): 4310-01-585-0156. Verify interchangeability with system specifications before substitution.
Key specifications for 85158: Supplementary Features: COMPANY ITEM NAME-ADAPTER ASSEMBLY, BLEED AIR VALVE; Functional Description: C/O CLOSEOUT FIXTURE 1,CLAMP 1,ADAPTER 1;USED TO INTERFACE BLEED AIR VALVE INLET PORT TO PNEUMATIC COMPONENTS TEST STAND DURING PROOF PRESSURE AND LEAKAGE TESTS,STATIC OPERATIONAL TESTS,AND ELECTRICAL TESTS AT DEPOT MAINTENANCE LEVEL; End Item Identification: B-1B 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.