The Gear,spur, cataloged under National Stock Number 3020-00-294-8917, 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 Ambac International Corporation Div Ambac International. Government technical data includes 12 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 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 | 3020-00-294-8917 |
| Primary Part Number | 73549 |
| Item Name | Gear,spur |
| FSC / FSG | 3020 / 30 — Gears, Pulleys, Sprockets, and Transmission Chain |
| Manufacturer | Ambac International Corporation Div Ambac International |
| Status | ACTIVE |
| Bore Nominal Diameter | 0.250 INCHES BOTH ENDS IN |
| Teeth Quantity | 112 |
| Body Style | PLAIN, SOLID |
| First Step Nominal Length | 0.065 INCHES FIRST END IN |
| Nominal Overall Length | 0.438 INCHES IN |
| Style Designator | PROTRUDING HUB |
| Pitch Diameter | 1.1670 INCHES NOMINAL IN |
| Tooth Form | STANDARD |
| End Nominal Length | 0.281 INCHES FIRST END IN |
| Nominal Outside Diameter | 1.188 INCHES IN |
| Pressure Angle | 14.5000 DEGREES |
| Face Nominal Width | 0.093 INCHES 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 |
|---|---|
| 73549 PRIMARY | Ambac International Corporation Div Ambac International (USA) |
NSN 3020-00-294-8917 is a Gear,spur, manufactured by Ambac International Corporation Div Ambac International, classified under FSC 3020, Gears, Pulleys, Sprockets, and Transmission Chain. Status: active.
NSN 3020-00-294-8917 has 1 manufacturer part number on file: 73549 (Ambac International Corporation Div Ambac International).
2 possible matches (shared part number, not a government interchangeability claim): 5961-00-557-3702, 5305-01-568-2718. Verify interchangeability with system specifications before substitution.
Key specifications for 73549: Bore Nominal Diameter: 0.250 INCHES BOTH ENDS IN; Teeth Quantity: 112; Body Style: PLAIN, SOLID; First Step Nominal Length: 0.065 INCHES FIRST END IN. 12 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.