The Gear,spur, cataloged under National Stock Number 3020-00-273-4183, is classified within Federal Supply Class 3020 (Gears, Pulleys, Sprockets, and Transmission Chain) of the Mechanical Power Transmission Equipment group. Government technical data includes 10 specifications, cited from the U.S. Government catalog. 5 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 3020-00-273-4183 |
| Item Name | Gear,spur |
| FSC / FSG | 3020 / 30 — Gears, Pulleys, Sprockets, and Transmission Chain |
| Status | ACTIVE |
| Keyway Nominal Width | 0.750 INCHES FIRST END IN |
| Teeth Quantity | 48 |
| Body Style | PLAIN, SOLID |
| Nominal Overall Length | 4.047 INCHES IN |
| Style Designator | PROTRUDING HUB |
| Pitch Diameter | 9.6000 INCHES NOMINAL IN |
| Tooth Form | STANDARD |
| Pressure Angle | 14.5000 DEGREES |
| Material | COPPER ALLOY OVERALL |
| Face Nominal Width | 1.125 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 |
|---|---|
| MB2271B21 | 5/9 Secondary reference Mkt Geotechnical Systems |
| MB2271D1PC21 | 5/9 Secondary reference Mkt Geotechnical Systems |
| MB2271-1PC21 | 5/9 Secondary reference Mkt Geotechnical Systems |
| MB2271PC21 | 5/9 Secondary reference Mkt Geotechnical Systems |
| MB2271D21 | 3/9 Design control — primary reference Mkt Geotechnical Systems |
NSN 3020-00-273-4183 is a Gear,spur, classified under FSC 3020, Gears, Pulleys, Sprockets, and Transmission Chain. Status: active.
Key specifications for 3020-00-273-4183: Keyway Nominal Width: 0.750 INCHES FIRST END IN; Teeth Quantity: 48; Body Style: PLAIN, SOLID; Nominal Overall Length: 4.047 INCHES IN. 10 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.