The Test Set Subassembly,aircraft Co, cataloged under National Stock Number 4920-01-077-2261, 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 Transistor Devices Inc Div Astrodyne Tdi High Power Business Unit. Government technical data includes 4 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 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 | 4920-01-077-2261 |
| Primary Part Number | 26537-1 |
| Item Name | Test Set Subassembly,aircraft Co |
| FSC / FSG | 4920 / 49 — Aircraft Maintenance and Repair Shop Specialized Equipment |
| Manufacturer | Transistor Devices Inc Div Astrodyne Tdi High Power Business Unit |
| Status | ACTIVE |
| Component Quantity | 72 |
| Major Components | PRINTED WIRING BOARD 1; CAPACITOR 5; CRYSTAL DIODE 1; DIODE 11; INTEGRATED 3; RELAY 1; RESISTOR 43; TRANSISTOR 7 |
| Mounting Configuration | MOUNTED TYPE |
| Usage Design | CURRENT CONTROL ASSEMBLY,A3 |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL B — Remove Demilitarization Key Points |
| Hazard | No hazard code in the DLA record (HMIC N) |
| Criticality Code | X |
NSN 4920-01-077-2261 is a Test Set Subassembly,aircraft Co, manufactured by Transistor Devices Inc Div Astrodyne Tdi High Power Business Unit, classified under FSC 4920, Aircraft Maintenance and Repair Shop Specialized Equipment. Status: active.
NSN 4920-01-077-2261 has 2 manufacturer part numbers on file: 26537-1 (Transistor Devices Inc Div Astrodyne Tdi High Power Business Unit), 26537B-1 (Transistor Devices Inc Div Astrodyne Tdi High Power Business Unit).
1 possible match (shared part number, not a government interchangeability claim): 5998-01-285-4308. Verify interchangeability with system specifications before substitution.
Key specifications for 26537-1: Component Quantity: 72; Major Components: PRINTED WIRING BOARD 1; CAPACITOR 5; CRYSTAL DIODE 1; DIODE 11; INTEGRATED 3; RELAY 1; RESISTOR 43; TRANSISTOR 7; Mounting Configuration: MOUNTED TYPE; End Item Identification: F-16 ACFT AGE.. 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.
NSN 4920-01-077-2261 has DEMIL Code B. Demilitarization may be required before disposal or transfer to non-military entities.
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.