The Torque Tube Assembly,aircraft, cataloged under National Stock Number 1680-00-496-0261, is classified within Federal Supply Class 1680 (Miscellaneous Aircraft Accessories and Components) of the Aircraft Components and Accessories group. The manufacturer of record is Thomas Instrument, Incorporated. The record lists 1 manufacturer part number for this item, enabling identification through both NSN and commercial part number lookups. 6 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 2 items share a part number with this NSN in the catalog (possible match — not a government interchangeability claim). Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 1680-00-496-0261 |
| Primary Part Number | 5901-151D |
| Item Name | Torque Tube Assembly,aircraft |
| FSC / FSG | 1680 / 16 — Miscellaneous Aircraft Accessories and Components |
| Manufacturer | Thomas Instrument, Incorporated |
| Status | ACTIVE |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL Q — CCL Item — Commerce Control List |
| Hazard | No hazard code in the DLA record (HMIC N) |
| Criticality Code | X |
| Part Number | Manufacturer |
|---|---|
| 5901-151D | Thomas Instrument, Incorporated (USA) |
| Reference | Meaning |
|---|---|
| 5901-151D | 3/2 Design control — primary reference U.S. Government activity |
| 4C95016 | D/9 Drawing number reference only U.S. Government activity |
| 5901-151D | 5/9 Secondary reference Speco Corp |
| 4C95016-151C | 5/9 Secondary reference U.S. Government activity |
| 5901-151C | 5/9 Secondary reference Speco Corp |
| 4C95016-151D | 1/2 Source control — Government-approved source U.S. Government activity |
NSN 1680-00-496-0261 is a Torque Tube Assembly,aircraft, manufactured by Thomas Instrument, Incorporated, classified under FSC 1680, Miscellaneous Aircraft Accessories and Components. Status: active.
NSN 1680-00-496-0261 has 1 manufacturer part number on file: 5901-151D (Thomas Instrument, Incorporated).
2 possible matches (shared part number, not a government interchangeability claim): 1680-00-496-0287, 1680-00-496-0288. Verify interchangeability with system specifications before substitution.
Key specifications for 5901-151D: Special Features: NEXT HIGHER ASSEMBLY IS ACTUATOR ASSY - TRAILING EDGE FLAPS; End Item Identification: C5 AIRCRAFT. 0 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 1680-00-496-0261 has DEMIL Code Q. 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.