The Fixture,aircraft Maintenance, cataloged under National Stock Number 4920-01-290-2908, is classified within Federal Supply Class 4920 (Aircraft Maintenance and Repair Shop Specialized Equipment) of the Maintenance and Repair Shop Equipment group. Government technical data includes 4 specifications, cited from the U.S. Government catalog. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 1 item shares a part number with this NSN in the catalog (possible match — not a government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 | 4920-01-290-2908 |
| Item Name | Fixture,aircraft Maintenance |
| FSC / FSG | 4920 / 49 — Aircraft Maintenance and Repair Shop Specialized Equipment |
| Status | ACTIVE |
| Nominal Overall Diameter | 1.750 INCHES IN |
| Nominal Overall Width | 0.625 INCHES IN |
| Reference Data and Literature | TO 4BA9-10-3 |
| Functional Description | USED ON THE CRANE HYDRO-AIRE SERVO VALVE ASSEMBLY TO INSTALL PLATE IN PROPER ALIGNMENT IN RELATION TO ARMATURE ASSEMBLY; USED ON THE KC-135 ACFT |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL A — No Demilitarization Required |
| Hazard | No hazard code in the DLA record (HMIC N) |
| Criticality Code | X |
| Reference | Meaning |
|---|---|
| 764551 | 3/2 Design control — primary reference U.S. Government activity |
| T64551 | 5/2 Secondary reference U.S. Government activity |
NSN 4920-01-290-2908 is a Fixture,aircraft Maintenance, classified under FSC 4920, Aircraft Maintenance and Repair Shop Specialized Equipment. Status: active.
1 possible match (shared part number, not a government interchangeability claim): 3040-01-502-2381. Verify interchangeability with system specifications before substitution.
Key specifications for 4920-01-290-2908: Nominal Overall Diameter: 1.750 INCHES IN; Nominal Overall Width: 0.625 INCHES IN; Reference Data and Literature: TO 4BA9-10-3; Functional Description: USED ON THE CRANE HYDRO-AIRE SERVO VALVE ASSEMBLY TO INSTALL PLATE IN PROPER ALIGNMENT IN RELATION TO ARMATURE ASSEMBLY; USED ON THE KC-135 ACFT. 4 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.