The Gear,spur, cataloged under National Stock Number 3020-00-326-7501, 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 23 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog.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 | 3020-00-326-7501 |
| Primary Part Number | 6738442 |
| 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 | 0.820 INCHES BOTH ENDS IN |
| Teeth Quantity | 35 |
| Body Style | WEBBED, OFFSET, SOLID |
| Bore Style | INVOLUTE SPLINE BOTH ENDS |
| Nominal Distance Between Body Face and Protruding Hub End | 0.905 INCHES SECOND END IN |
| Nominal Distance Between Body Face and Protruding Hub End | 1.386 INCHES FIRST END IN |
| First Step Nominal Length | 0.619 INCHES FIRST END IN |
| Hardness Rating | 60.0 ROCKWELL C NOMINAL OVERALL |
| Nominal Overall Length | 2.791 INCHES IN |
| Style Designator | PROTRUDING HUBS |
| Material Document and Classification | AMS 6260 ASSN STD SINGLE MATERIAL RESPONSE OVERALL |
| Pitch Diameter | 3.5000 INCHES NOMINAL IN |
| Tooth Form | STANDARD |
| First Step Nominal Diameter | 1.181 INCHES FIRST END IN |
| Hub Style Designator | 1 STEP FIRST END |
| Spline Quantity | 16 BOTH ENDS |
| End Nominal Length | 1.386 INCHES FIRST END IN |
| Nominal Outside Diameter | 3.698 INCHES IN |
| End Nominal Diameter | 1.078 INCHES FIRST END IN |
| Pressure Angle | 25.0000 DEGREES |
| Material | STEEL COMP E9310 OVERALL |
| Spline Pitch Diameter | 0.8000 INCHES NOMINAL BOTH ENDS IN |
| Face Nominal Width | 0.500 INCHES IN |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL Q — CCL Item — Commerce Control List |
| Hazard | No hazard code in the DLA record (HMIC N) |
| Criticality Code | X |
| Part Number | Manufacturer |
|---|---|
| 6738442 PRIMARY | Allison Transmission Inc Dba Allison Transmission, Inc (USA) |
| Reference | Meaning |
|---|---|
| 6738442 | 5/9 Secondary reference General Motors Corp |
NSN 3020-00-326-7501 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 3020-00-326-7501 has 1 manufacturer part number on file: 6738442 (Allison Transmission Inc Dba Allison Transmission, Inc).
Key specifications for 6738442: Bore Nominal Diameter: 0.820 INCHES BOTH ENDS IN; Teeth Quantity: 35; Body Style: WEBBED, OFFSET, SOLID; Bore Style: INVOLUTE SPLINE BOTH ENDS. 23 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.
NSN 3020-00-326-7501 has DEMIL Code Q. Demilitarization may be required before disposal or transfer to non-military entities.
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.