The Gear Sector,spur, cataloged under National Stock Number 3020-00-908-7572, is classified within Federal Supply Class 3020 (Gears, Pulleys, Sprockets, and Transmission Chain) of the Mechanical Power Transmission Equipment group. Government technical data includes 12 specifications, cited from the U.S. Government catalog. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. 2 items share a part number with this NSN in the catalog (possible match — not a government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 | 3020-00-908-7572 |
| Item Name | Gear Sector,spur |
| FSC / FSG | 3020 / 30 — Gears, Pulleys, Sprockets, and Transmission Chain |
| Status | ACTIVE |
| Bore Nominal Diameter | 0.250 INCHES BOTH ENDS IN |
| Backlash Designation | GRADE C |
| Teeth Quantity | 26 |
| Nominal Outside Radius | 1.1040 INCHES IN |
| Bore Style | PLAIN BOTH ENDS |
| Precision Classification | QUALITY NUMBER 10 |
| Nominal Overall Length | 2.028 INCHES IN |
| Material Document and Classification | QQ-B-691,COMP 6 FED SPEC SINGLE MATERIAL RESPONSE OVERALL |
| Tooth Form | STANDARD |
| Pitch Radius | 1.0830 INCHES NOMINAL IN |
| Pressure Angle | 20.0000 DEGREES |
| Material | COPPER ALLOY 923 OVERALL |
| 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 |
|---|---|
| 112983 | 3/9 Design control — primary reference U.S. Government activity |
NSN 3020-00-908-7572 is a Gear Sector,spur, classified under FSC 3020, Gears, Pulleys, Sprockets, and Transmission Chain. Status: active.
2 possible matches (shared part number, not a government interchangeability claim): 2010-00-981-3238, 4820-01-012-9717. Verify interchangeability with system specifications before substitution.
Key specifications for 3020-00-908-7572: Bore Nominal Diameter: 0.250 INCHES BOTH ENDS IN; Backlash Designation: GRADE C; Teeth Quantity: 26; Nominal Outside Radius: 1.1040 INCHES 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.