The Gear Sector,spur, cataloged under National Stock Number 3020-01-464-7858, is classified within Federal Supply Class 3020 (Gears, Pulleys, Sprockets, and Transmission Chain) of the Mechanical Power Transmission Equipment group. Government technical data includes 16 specifications, cited from the U.S. Government catalog. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 3020-01-464-7858 |
| Item Name | Gear Sector,spur |
| FSC / FSG | 3020 / 30 — Gears, Pulleys, Sprockets, and Transmission Chain |
| Status | ACTIVE |
| Bore Nominal Diameter | 1.9044 INCHES BOTH ENDS IN |
| Teeth Quantity | 180 |
| Surface Treatment Document and Classification | QQ-P-35 (PS403-8) FED SPEC SINGLE TREATMENT RESPONSE OVERALL |
| Nominal Outside Radius | 1.896 INCHES IN |
| Bore Style | PLAIN BOTH ENDS |
| Precision Classification | QUALITY NUMBER 12 |
| Hardness Rating | 55.0 ROCKWELL C MINIMUM AND 60.0 ROCKWELL C MAXIMUM OVERALL |
| Nominal Overall Length | 0.438 INCHES IN |
| Material Document and Classification | QQ-S-763 FED SPEC SINGLE MATERIAL RESPONSE OVERALL |
| Tooth Form | STANDARD |
| Surface Treatment | PASSIVATE OVERALL |
| Pitch Radius | 1.8750 INCHES NOMINAL IN |
| Pressure Angle | 20.0000 DEGREES |
| Material | STEEL COMP 440C OVERALL |
| Attachment Method | MOUNTING HOLE |
| Face Nominal Width | 0.250 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 |
|---|---|
| 881601-5 | 3/9 Design control — primary reference Drs Sustainment Systems, Inc. |
| 881601 | D/9 Drawing number reference only Drs Sustainment Systems, Inc. |
NSN 3020-01-464-7858 is a Gear Sector,spur, classified under FSC 3020, Gears, Pulleys, Sprockets, and Transmission Chain. Status: active.
Key specifications for 3020-01-464-7858: Bore Nominal Diameter: 1.9044 INCHES BOTH ENDS IN; Teeth Quantity: 180; Surface Treatment Document and Classification: QQ-P-35 (PS403-8) FED SPEC SINGLE TREATMENT RESPONSE OVERALL; Nominal Outside Radius: 1.896 INCHES IN. 16 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.