The Gear,spur, cataloged under National Stock Number 3020-01-178-0741, is classified within Federal Supply Class 3020 (Gears, Pulleys, Sprockets, and Transmission Chain) of the Mechanical Power Transmission Equipment group. The manufacturer of record is Mccay Tool and Engineering Company Dba Mccay Tool & Engineering Co. Government technical data includes 3 specifications, cited from the U.S. Government catalog. The record lists 1 manufacturer part number for this item, enabling identification through both NSN and commercial part number lookups. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 3020-01-178-0741 |
| Primary Part Number | 3020012073791 |
| Item Name | Gear,spur |
| FSC / FSG | 3020 / 30 — Gears, Pulleys, Sprockets, and Transmission Chain |
| Manufacturer | Mccay Tool and Engineering Company Dba Mccay Tool & Engineering Co |
| Status | ACTIVE |
| Teeth Quantity | 800 |
| Pitch Diameter | 12.5000 INCHES NOMINAL IN |
| Material | ALUMINUM ALLOY OVERALL |
| 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 |
|---|---|
| 3020012073791 | Mccay Tool and Engineering Company Dba Mccay Tool & Engineering Co (USA) |
| Reference | Meaning |
|---|---|
| 76A113011-2069 | 5/9 Secondary reference The Boeing Company Div Defense |
| 76A113011-2069 | 3/9 Design control — primary reference Gerhardt Gear Co, Inc |
NSN 3020-01-178-0741 is a Gear,spur, manufactured by Mccay Tool and Engineering Company Dba Mccay Tool & Engineering Co, classified under FSC 3020, Gears, Pulleys, Sprockets, and Transmission Chain. Status: active.
NSN 3020-01-178-0741 has 1 manufacturer part number on file: 3020012073791 (Mccay Tool and Engineering Company Dba Mccay Tool & Engineering Co).
Key specifications for 3020012073791: Teeth Quantity: 800; Pitch Diameter: 12.5000 INCHES NOMINAL IN; Material: ALUMINUM ALLOY OVERALL. 3 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.