The Gear,antibacklash,spur, cataloged under National Stock Number 3020-00-907-0476, is classified within Federal Supply Class 3020 (Gears, Pulleys, Sprockets, and Transmission Chain) of the Mechanical Power Transmission Equipment group. The manufacturer of record is Emcore Space & Navigation Corporation Div Space & Navigation. Government technical data includes 22 specifications, cited from the U.S. Government catalog. The record lists 1 manufacturer part number for this item, enabling identification through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 3020-00-907-0476 |
| Primary Part Number | 1801992-1 |
| Item Name | Gear,antibacklash,spur |
| FSC / FSG | 3020 / 30 — Gears, Pulleys, Sprockets, and Transmission Chain |
| Manufacturer | Emcore Space & Navigation Corporation Div Space & Navigation |
| Status | ACTIVE |
| Bore Nominal Diameter | 0.120 INCHES BOTH ENDS IN |
| Hub Nominal Diameter | 0.187 INCHES FIRST END IN |
| Hub Nominal Diameter | 0.406 INCHES SECOND END IN |
| Teeth Quantity | 72 |
| Clamping Surface Nominal Length | 0.129 INCHES FIRST END IN |
| Bore Style | PLAIN BOTH ENDS |
| Nominal Distance Between Body Face and Protruding Hub End | 0.160 INCHES FIRST END IN |
| Nominal Distance Between Body Face and Protruding Hub End | 0.023 INCHES SECOND END IN |
| Precision Classification | QUALITY NUMBER 10 OR QUALITY NUMBER 8 |
| Style Designator | PROTRUDING HUBS |
| Material Document and Classification | QQ-S-763,COND A FED SPEC SINGLE MATERIAL RESPONSE HUB |
| Material Document and Classification | MIL-S-5059 MIL SPEC SINGLE MATERIAL RESPONSE BODY |
| Pitch Diameter | 1.1250 INCHES NOMINAL IN |
| Tooth Form | STANDARD |
| Hub Style Designator | SPLIT FIRST END |
| Hub Style Designator | PLAIN SECOND END |
| Nominal Outside Diameter | 1.155 INCHES IN |
| Pressure Angle | 20.0000 DEGREES |
| Material | STEEL COMP 303 HUB |
| Material | STEEL COMP 302 BODY |
| Attachment Method | CLAMP |
| Face Nominal Width | 0.064 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 |
| Part Number | Manufacturer |
|---|---|
| 1801992-1 PRIMARY | Emcore Space & Navigation Corporation Div Space & Navigation (USA) |
| Reference | Meaning |
|---|---|
| 1801992-1 | 5/9 Secondary reference Honeywell Intl Inc Defense Avionics Systems Former Guidance Systems Div |
NSN 3020-00-907-0476 is a Gear,antibacklash,spur, manufactured by Emcore Space & Navigation Corporation Div Space & Navigation, classified under FSC 3020, Gears, Pulleys, Sprockets, and Transmission Chain. Status: active.
NSN 3020-00-907-0476 has 1 manufacturer part number on file: 1801992-1 (Emcore Space & Navigation Corporation Div Space & Navigation).
Key specifications for 1801992-1: Bore Nominal Diameter: 0.120 INCHES BOTH ENDS IN; Hub Nominal Diameter: 0.187 INCHES FIRST END IN; Hub Nominal Diameter: 0.406 INCHES SECOND END IN; Teeth Quantity: 72. 22 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.