The Gear,internal, cataloged under National Stock Number 3020-00-528-1437, is classified within Federal Supply Class 3020 (Gears, Pulleys, Sprockets, and Transmission Chain) of the Mechanical Power Transmission Equipment group. Government technical data includes 11 specifications, cited from the U.S. Government catalog. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. 2 items share a part number with this NSN in the catalog (possible match — not a government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 | 3020-00-528-1437 |
| Item Name | Gear,internal |
| FSC / FSG | 3020 / 30 — Gears, Pulleys, Sprockets, and Transmission Chain |
| Status | ACTIVE |
| Backlash Designation | GRADE A |
| Teeth Quantity | 78 |
| Body Style | PLAIN, SOLID |
| Teeth Type | SPUR |
| Style Designator | PLAIN RING |
| Material Document and Classification | QQ-S-764,TYPE 416,COND A FED SPEC SINGLE MATERIAL RESPONSE OVERALL |
| Pitch Diameter | 1.6250 INCHES NOMINAL IN |
| Nominal Outside Diameter | 1.873 INCHES IN |
| Pressure Angle | 20.0000 DEGREES |
| Material | STEEL COMP 416 OVERALL |
| Face Nominal Width | 0.155 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 |
| Reference | Meaning |
|---|---|
| 51554 | 3/2 Design control — primary reference U.S. Government activity |
NSN 3020-00-528-1437 is a Gear,internal, classified under FSC 3020, Gears, Pulleys, Sprockets, and Transmission Chain. Status: active.
2 possible matches (shared part number, not a government interchangeability claim): 4720-01-481-8117, 4720-01-629-5616. Verify interchangeability with system specifications before substitution.
Key specifications for 3020-00-528-1437: Backlash Designation: GRADE A; Teeth Quantity: 78; Body Style: PLAIN, SOLID; Teeth Type: SPUR. 11 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.