The Gear,spur, cataloged under National Stock Number 3020-00-948-7157, 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 Triumph Gear Systems - Macomb, Inc. Government technical data includes 16 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. 1 item shares a part number with this NSN in the catalog (possible match — not a government interchangeability claim). Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 3020-00-948-7157 |
| Primary Part Number | 30406-0 |
| Item Name | Gear,spur |
| FSC / FSG | 3020 / 30 — Gears, Pulleys, Sprockets, and Transmission Chain |
| Manufacturer | Triumph Gear Systems - Macomb, Inc |
| Status | ACTIVE |
| Bore Nominal Diameter | 0.380 INCHES BOTH ENDS IN |
| Hub Nominal Diameter | 0.5905 INCHES BOTH ENDS IN |
| Teeth Quantity | 71 |
| Body Style | WEBBED, SOLID |
| Bore Style | PLAIN BOTH ENDS |
| Nominal Distance Between Body Face and Protruding Hub End | 0.531 INCHES BOTH ENDS IN |
| Precision Classification | QUALITY NUMBER 15 |
| Style Designator | PROTRUDING HUBS |
| Material Document and Classification | AMS6263 ASSN STD SINGLE MATERIAL RESPONSE OVERALL |
| Pitch Diameter | 2.2190 INCHES NOMINAL IN |
| Tooth Form | STANDARD |
| Hub Style Designator | PLAIN BOTH ENDS |
| Nominal Outside Diameter | 2.2546 INCHES IN |
| Pressure Angle | 20.0000 DEGREES |
| Material | STEEL OVERALL |
| Face Nominal Width | 0.539 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 |
|---|---|
| 30406-0 PRIMARY | Triumph Gear Systems - Macomb, Inc (USA) |
| Reference | Meaning |
|---|---|
| 30406-0 | 5/9 Secondary reference Rtx Corporation Div Pratt & Whitney |
NSN 3020-00-948-7157 is a Gear,spur, manufactured by Triumph Gear Systems - Macomb, Inc, classified under FSC 3020, Gears, Pulleys, Sprockets, and Transmission Chain. Status: active.
NSN 3020-00-948-7157 has 1 manufacturer part number on file: 30406-0 (Triumph Gear Systems - Macomb, Inc).
1 possible match (shared part number, not a government interchangeability claim): 5305-01-683-9638. Verify interchangeability with system specifications before substitution.
Key specifications for 30406-0: Bore Nominal Diameter: 0.380 INCHES BOTH ENDS IN; Hub Nominal Diameter: 0.5905 INCHES BOTH ENDS IN; Teeth Quantity: 71; Body Style: WEBBED, SOLID. 16 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 3020-00-948-7157 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.