The Gear,helical, cataloged under National Stock Number 3020-00-883-7431, 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 U S Army Tank Automotive Command Amsta-Im-Mm. Government technical data includes 18 specifications, cited from the U.S. Government catalog. The record lists 3 manufacturer part numbers for this item, enabling identification through both NSN and commercial part number lookups. 3 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 3020-00-883-7431 |
| Primary Part Number | 10932779 |
| Item Name | Gear,helical |
| FSC / FSG | 3020 / 30 — Gears, Pulleys, Sprockets, and Transmission Chain |
| Manufacturer | U S Army Tank Automotive Command Amsta-Im-Mm |
| Status | ACTIVE |
| Bore Nominal Diameter | 2.063 INCHES BOTH ENDS IN |
| Helix Angle | 17.9386 DEGREES |
| Teeth Quantity | 63 |
| Body Style | WEBBED, OFFSET, SOLID |
| Tooth Direction | RIGHT |
| Bore Style | PLAIN BOTH ENDS |
| Teeth Type | SINGLE HELIX |
| Hardness Rating | 32.0 ROCKWELL C MINIMUM AND 37.0 ROCKWELL C MAXIMUM TEETH |
| Nominal Overall Length | 0.900 INCHES IN |
| Style Designator | BELL SHAPE BODY, HUBLESS |
| Material Document and Classification | 66 FED STD SINGLE MATERIAL RESPONSE OVERALL |
| Pitch Diameter | 5.5183 INCHES NOMINAL IN |
| Tooth Form | STUB |
| Nominal Outside Diameter | 5.656 INCHES IN |
| Pressure Angle | 20.0000 DEGREES |
| Material | STEEL COMP 1330 AND STEEL COMP 4130 AND STEEL COMP 4140H OVERALL |
| Body Recess Nominal Depth | 0.560 INCHES FIRST END IN |
| Face Nominal Width | 0.560 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 |
|---|---|
| 10932779 | Amz Alabama Inc. (USA) |
| 10932779 | Fmc Corp (USA) |
| 10932779 PRIMARY | U S Army Tank Automotive Command Amsta-Im-Mm (USA) |
| Reference | Meaning |
|---|---|
| 10932779 | 5/2 Secondary reference U.S. Government activity |
| 3020008837431 | 5/9 Secondary reference E.c.a Etablissement Centrald'approvisionnement Des Forces Armee |
| 10932779 | 5/9 Secondary reference Profile Gear Corp |
NSN 3020-00-883-7431 is a Gear,helical, manufactured by U S Army Tank Automotive Command Amsta-Im-Mm, classified under FSC 3020, Gears, Pulleys, Sprockets, and Transmission Chain. Status: active.
NSN 3020-00-883-7431 has 3 manufacturer part numbers on file: 10932779 (Amz Alabama Inc.), 10932779 (Fmc Corp), 10932779 (U S Army Tank Automotive Command Amsta-Im-Mm).
Key specifications for 10932779: Bore Nominal Diameter: 2.063 INCHES BOTH ENDS IN; Helix Angle: 17.9386 DEGREES; Teeth Quantity: 63; Body Style: WEBBED, OFFSET, SOLID. 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.