The Tractor,wheeled,aircraft Towing, cataloged under National Stock Number 1740-00-021-5138, is classified within Federal Supply Class 1740 (Airfield Specialized Trucks and Trailers) of the Aircraft Launch, Landing, and Ground Handling Equipment group. Government technical data includes 2 specifications, cited from the U.S. Government catalog. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. 1 item shares a part number with this NSN in the catalog (possible match — not a government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 | 1740-00-021-5138 |
| Item Name | Tractor,wheeled,aircraft Towing |
| FSC / FSG | 1740 / 17 — Airfield Specialized Trucks and Trailers |
| Status | ACTIVE |
| Functional Description | USED TO TOW MUNITIONS TRAILORS OR AIRCRAFT WEIGHING UP TO 140000 LBS LBS |
| Reference Number Differentiating Characteristics | AS DIFFERENTIATED BY AIR AND ELECTRICAL CONNECTIONS FOR MUNITIONS TOWING TRAILER |
| 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 |
|---|---|
| G40E1 | 3/9 Design control — primary reference U.S. Government activity |
NSN 1740-00-021-5138 is a Tractor,wheeled,aircraft Towing, classified under FSC 1740, Airfield Specialized Trucks and Trailers. Status: active.
1 possible match (shared part number, not a government interchangeability claim): 1740-00-164-6852. Verify interchangeability with system specifications before substitution.
Key specifications for 1740-00-021-5138: Functional Description: USED TO TOW MUNITIONS TRAILORS OR AIRCRAFT WEIGHING UP TO 140000 LBS LBS; Reference Number Differentiating Characteristics: AS DIFFERENTIATED BY AIR AND ELECTRICAL CONNECTIONS FOR MUNITIONS TOWING TRAILER. 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.