The Gearshaft,spur, cataloged under National Stock Number 3040-01-182-7644, is classified within Federal Supply Class 3040 (Miscellaneous Power Transmission Equipment) of the Mechanical Power Transmission Equipment group. The manufacturer of record is Tempco Engineering Inc Dba Lmi Aerospace. The record lists 3 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through both NSN and commercial part number lookups. 3 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog.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.
| Item Name | Gearshaft,spur |
| FSC / FSG | 3040 — Miscellaneous Power Transmission Equipment (FSG 30) |
| Manufacturers | Tempco Engineering Inc Dba Lmi Aerospace (CAGE 60609); Trivent Engineering, Incorporated Div Trivent Engineering Inc. (CAGE 67074); The Boeing Company (CAGE 8V613) |
| Parameter | Value |
|---|---|
| NSN | 3040-01-182-7644 |
| Primary Part Number | 387-3786 |
| Item Name | Gearshaft,spur |
| FSC / FSG | 3040 / 30 — Miscellaneous Power Transmission Equipment |
| Manufacturer | Tempco Engineering Inc Dba Lmi Aerospace |
| Status | ACTIVE |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL B — Remove Demilitarization Key Points |
| Hazard | No hazard code in the DLA record (HMIC N) |
| Criticality Code | X |
| Part Number | Manufacturer |
|---|---|
| 387-3786 PRIMARY | Tempco Engineering Inc Dba Lmi Aerospace (USA) |
| 387-3786 PRIMARY | Trivent Engineering, Incorporated Div Trivent Engineering Inc. (USA) |
| 387-3786 | The Boeing Company (USA) |
| Reference | Meaning |
|---|---|
| 387-3786 | 5/9 Secondary reference Mcdonnell Douglas Helicopter Co Inc |
| 387-3786 | C/1 Advisory reference — outside the item-of-supply concept Marino Enterprises, Inc. Dba Gear Technology Div Gear Technology |
| 387-3786 | 5/9 Secondary reference Kosmo Gears |
NSN 3040-01-182-7644 is a Gearshaft,spur, manufactured by Tempco Engineering Inc Dba Lmi Aerospace, classified under FSC 3040, Miscellaneous Power Transmission Equipment. Status: active.
NSN 3040-01-182-7644 has 3 manufacturer part numbers on file: 387-3786 (Tempco Engineering Inc Dba Lmi Aerospace), 387-3786 (Trivent Engineering, Incorporated Div Trivent Engineering Inc.), 387-3786 (The Boeing Company).
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 3040-01-182-7644 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.