The Gear,spur, cataloged under National Stock Number 3020-00-757-2818, is classified within Federal Supply Class 3020 (Gears, Pulleys, Sprockets, and Transmission Chain) of the Mechanical Power Transmission Equipment group. Government technical data includes 25 specifications, cited from the U.S. Government catalog. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 3020-00-757-2818 |
| Item Name | Gear,spur |
| FSC / FSG | 3020 / 30 — Gears, Pulleys, Sprockets, and Transmission Chain |
| Status | ACTIVE |
| Teeth Quantity | 74 |
| Surface Treatment Document and Classification | MIL-C-5541 MIL SPEC 1ST TREATMENT RESPONSE HUB |
| Body Style | PLAIN, SOLID |
| Nominal Distance Between Body Face and Protruding Hub End | 0.140 INCHES BOTH ENDS IN |
| First Step Nominal Length | 0.015 INCHES FIRST END IN |
| First Step Nominal Length | 0.015 INCHES SECOND END IN |
| Precision Classification | QUALITY NUMBER 12 |
| Hardness Rating | 28.0 ROCKWELL C MINIMUM AND 32.0 ROCKWELL C MAXIMUM HUB |
| Nominal Overall Length | 0.376 INCHES IN |
| Style Designator | PROTRUDING HUBS |
| Material Document and Classification | QQ-A-225/8,T6 FED SPEC 1ST MATERIAL RESPONSE TEETH |
| Material Document and Classification | QQ-S-764,COND T FED SPEC 2ND MATERIAL RESPONSE HUB |
| Pitch Diameter | 1.1555 INCHES MINIMUM AND 1.1562 INCHES MAXIMUM IN |
| Tooth Form | STANDARD |
| First Step Nominal Diameter | 0.250 INCHES SECOND END IN |
| Hub Style Designator | 1 STEP BOTH ENDS |
| End Nominal Length | 0.125 INCHES SECOND END IN |
| End Nominal Length | 0.125 INCHES FIRST END IN |
| Nominal Outside Diameter | 1.187 INCHES IN |
| Surface Treatment | OXIDE FILM TEETH |
| End Nominal Diameter | 0.187 INCHES SECOND END IN |
| Pressure Angle | 14.5000 DEGREES |
| Material | STEEL COMP 416 HUB |
| Material | ALUMINUM ALLOY 6061 TEETH |
| Face Nominal Width | 0.096 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 |
|---|---|
| SM-C-504172 | 3/2 Design control — primary reference U.S. Government activity |
NSN 3020-00-757-2818 is a Gear,spur, classified under FSC 3020, Gears, Pulleys, Sprockets, and Transmission Chain. Status: active.
Key specifications for 3020-00-757-2818: Teeth Quantity: 74; Surface Treatment Document and Classification: MIL-C-5541 MIL SPEC 1ST TREATMENT RESPONSE HUB; Body Style: PLAIN, SOLID; Nominal Distance Between Body Face and Protruding Hub End: 0.140 INCHES BOTH ENDS IN. 25 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.