The Gear,spur, cataloged under National Stock Number 3020-01-088-5597, is classified within Federal Supply Class 3020 (Gears, Pulleys, Sprockets, and Transmission Chain) of the Mechanical Power Transmission Equipment group. Government technical data includes 18 specifications, cited from the U.S. Government catalog. 3 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 3020-01-088-5597 |
| Item Name | Gear,spur |
| FSC / FSG | 3020 / 30 — Gears, Pulleys, Sprockets, and Transmission Chain |
| Status | ACTIVE |
| Bore Nominal Diameter | 0.687 INCHES BOTH ENDS IN |
| Hub Nominal Diameter | 1.000 INCHES FIRST END IN |
| Teeth Quantity | 30 |
| Surface Treatment Document and Classification | MIL-STD-171,FINISH NO.5.3.1.2 MIL STD SINGLE TREATMENT RESPONSE OVERALL |
| Body Style | PLAIN, SOLID |
| Bore Style | PLAIN BOTH ENDS |
| Nominal Distance Between Body Face and Protruding Hub End | 0.288 INCHES FIRST END IN |
| Hardness Rating | 32.0 ROCKWELL C MINIMUM AND 36.0 ROCKWELL C MAXIMUM OVERALL |
| Style Designator | PROTRUDING HUB |
| Material Document and Classification | MIL-S-6709 MIL SPEC SINGLE MATERIAL RESPONSE OVERALL |
| Pitch Diameter | 1.8750 INCHES NOMINAL IN |
| Tooth Form | STANDARD |
| Hub Style Designator | PLAIN FIRST END |
| Nominal Outside Diameter | 1.975 INCHES IN |
| Surface Treatment | PHOSPHATE MANGANESE OVERALL |
| Pressure Angle | 20.0000 DEGREES |
| Material | STEEL UNS K24065 OVERALL |
| 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 |
|---|---|
| 125733 | 5/9 Secondary reference Lockheed Martin Corp Electronics and Missiles Div |
| 125733 | 5/9 Secondary reference Tri-Aerotech Inc |
| 125733 | 3/9 Design control — primary reference Mott Corp Dba Mott Corp |
NSN 3020-01-088-5597 is a Gear,spur, classified under FSC 3020, Gears, Pulleys, Sprockets, and Transmission Chain. Status: active.
Key specifications for 3020-01-088-5597: Bore Nominal Diameter: 0.687 INCHES BOTH ENDS IN; Hub Nominal Diameter: 1.000 INCHES FIRST END IN; Teeth Quantity: 30; Surface Treatment Document and Classification: MIL-STD-171,FINISH NO.5.3.1.2 MIL STD SINGLE TREATMENT RESPONSE OVERALL. 18 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.