The Gear,spur, cataloged under National Stock Number 3020-01-421-0129, 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 Allison Transmission Inc Dba Allison Transmission, Inc. Government technical data includes 17 specifications, cited from the U.S. Government catalog. The record lists 2 manufacturer part numbers for this item, enabling identification through both NSN and commercial part number lookups. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 3020-01-421-0129 |
| Primary Part Number | 29510240 |
| Item Name | Gear,spur |
| FSC / FSG | 3020 / 30 — Gears, Pulleys, Sprockets, and Transmission Chain |
| Manufacturer | Allison Transmission Inc Dba Allison Transmission, Inc |
| Status | ACTIVE |
| Bore Nominal Diameter | 1.162 INCHES BOTH ENDS IN |
| Hub Nominal Diameter | 1.600 INCHES FIRST END IN |
| Hub Nominal Diameter | 1.575 INCHES SECOND END IN |
| Teeth Quantity | 39 |
| Body Style | PLAIN, SOLID |
| Bore Style | INVOLUTE SPLINE BOTH ENDS |
| Nominal Distance Between Body Face and Protruding Hub End | 0.631 INCHES SECOND END IN |
| Nominal Distance Between Body Face and Protruding Hub End | 1.001 INCHES FIRST END IN |
| Style Designator | PROTRUDING HUBS |
| Pitch Diameter | 9.7500 INCHES NOMINAL IN |
| Hub Style Designator | PLAIN BOTH ENDS |
| Spline Quantity | 17 BOTH ENDS |
| Nominal Outside Diameter | 10.176 INCHES IN |
| Pressure Angle | 25.0000 DEGREES |
| Material | STEEL COMP 8625H OR STEEL COMP 8620H OVERALL |
| Spline Pitch Diameter | 1.0625 INCHES NOMINAL BOTH ENDS IN |
| Face Nominal Width | 0.500 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 |
NSN 3020-01-421-0129 is a Gear,spur, manufactured by Allison Transmission Inc Dba Allison Transmission, Inc, classified under FSC 3020, Gears, Pulleys, Sprockets, and Transmission Chain. Status: active.
NSN 3020-01-421-0129 has 2 manufacturer part numbers on file: 29510240 (Allison Transmission Inc Dba Allison Transmission, Inc), 29510240 (Hema Disli Sanayi Ve Tic.a.s.).
Key specifications for 29510240: Bore Nominal Diameter: 1.162 INCHES BOTH ENDS IN; Hub Nominal Diameter: 1.600 INCHES FIRST END IN; Hub Nominal Diameter: 1.575 INCHES SECOND END IN; Teeth Quantity: 39. 17 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.