The Gear,spur, cataloged under National Stock Number 3020-00-674-4944, 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 Bmt Aerospace Usa, Inc.. Government technical data includes 14 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 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 | 3020-00-674-4944 |
| Primary Part Number | 354512 |
| Item Name | Gear,spur |
| FSC / FSG | 3020 / 30 — Gears, Pulleys, Sprockets, and Transmission Chain |
| Manufacturer | Bmt Aerospace Usa, Inc. |
| Status | ACTIVE |
| Bore Nominal Diameter | 0.603 INCHES BOTH ENDS IN |
| Teeth Quantity | 7 |
| Body Style | PLAIN, SOLID |
| Bore Style | PLAIN BOTH ENDS |
| Hardness Rating | 81.0 ROCKWELL A MINIMUM AND 85.0 ROCKWELL A MAXIMUM OVERALL |
| Style Designator | HUBLESS |
| Material Document and Classification | AMS 6260 ASSN STD SINGLE MATERIAL RESPONSE OVERALL |
| Pitch Diameter | 1.1667 INCHES NOMINAL IN |
| Tooth Form | STANDARD |
| Nominal Outside Diameter | 1.500 INCHES IN |
| Pressure Angle | 28.0000 DEGREES |
| Material | STEEL COMP E9310 OVERALL |
| Attachment Method | CLAMP |
| Face Nominal Width | 0.496 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 |
NSN 3020-00-674-4944 is a Gear,spur, manufactured by Bmt Aerospace Usa, Inc., classified under FSC 3020, Gears, Pulleys, Sprockets, and Transmission Chain. Status: active.
NSN 3020-00-674-4944 has 2 manufacturer part numbers on file: 354512 (Bmt Aerospace Usa, Inc.), 354512 (Rtx Corporation Dba Pratt & Whitney Div Pratt &whitney).
3 possible matches (shared part number, not a government interchangeability claim): 4810-01-185-5283, 4810-01-185-5486, 4820-01-185-8222. Verify interchangeability with system specifications before substitution.
Key specifications for 354512: Bore Nominal Diameter: 0.603 INCHES BOTH ENDS IN; Teeth Quantity: 7; Body Style: PLAIN, SOLID; Bore Style: PLAIN BOTH ENDS. 14 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.