The Gearshaft,spur, cataloged under National Stock Number 3040-01-128-4253, is classified within Federal Supply Class 3040 (Miscellaneous Power Transmission Equipment) of the Mechanical Power Transmission Equipment group. The manufacturer of record is Moog Military Aircraft Llc. Government technical data includes 7 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through both NSN and commercial part number lookups. 3 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 3040-01-128-4253 |
| Primary Part Number | 2040921-1 |
| Item Name | Gearshaft,spur |
| FSC / FSG | 3040 / 30 — Miscellaneous Power Transmission Equipment |
| Manufacturer | Moog Military Aircraft Llc |
| Status | ACTIVE |
| Shaft Material | STEEL |
| Diametral Pitch | 17 |
| Gear Outside Diameter | 1.590 INCHES NOMINAL IN |
| Gear Material | STEEL |
| Shaft End Type | SPLINED INVOLUTE |
| Pressure Angle | 30.0000 DEGREES |
| Face Width | 0.250 INCHES NOMINAL IN |
| 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 |
|---|---|
| 2040921-1 PRIMARY | Moog Military Aircraft Llc (USA) |
| 2040921-1 | Aero International, Llc Dba Ams Engineered Solutions (USA) |
| Reference | Meaning |
|---|---|
| 10106840 | 6/9 Informative reference only Nimikkeistokeskus Ncb Finland |
| 2040921-1 | 5/9 Secondary reference Honeywell International Inc. Div Aerospace - Torrance |
| 2040921 | D/9 Drawing number reference only Honeywell International Inc. Div Aerospace - Torrance |
NSN 3040-01-128-4253 is a Gearshaft,spur, manufactured by Moog Military Aircraft Llc, classified under FSC 3040, Miscellaneous Power Transmission Equipment. Status: active.
NSN 3040-01-128-4253 has 2 manufacturer part numbers on file: 2040921-1 (Moog Military Aircraft Llc), 2040921-1 (Aero International, Llc Dba Ams Engineered Solutions).
Key specifications for 2040921-1: Shaft Material: STEEL; Diametral Pitch: 17; Gear Outside Diameter: 1.590 INCHES NOMINAL IN; Overall Length: 3.405 INCHES NOMINAL IN. 7 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.