The Gear,spur, cataloged under National Stock Number 3020-00-072-7122, 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 Honeywell International, Inc Div Aerospace-Tucson. Government technical data includes 28 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through both NSN and commercial part number lookups. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 3020-00-072-7122 |
| Primary Part Number | 514446-1 |
| Item Name | Gear,spur |
| FSC / FSG | 3020 / 30 — Gears, Pulleys, Sprockets, and Transmission Chain |
| Manufacturer | Honeywell International, Inc Div Aerospace-Tucson |
| Status | ACTIVE |
| Bore Nominal Diameter | 0.250 INCHES BOTH ENDS IN |
| Teeth Quantity | 19 |
| Second Step Nominal Diameter | 0.250 INCHES BOTH ENDS IN |
| Body Style | WEBBED, SOLID |
| Bore Style | PLAIN BOTH ENDS |
| Mounting Hole Type and Quantity | 2 PLAIN TRANSVERSELY THROUGH HUB FIRST END |
| Nominal Distance Between Body Face and Protruding Hub End | 0.650 INCHES FIRST END IN |
| Nominal Distance Between Body Face and Protruding Hub End | 0.565 INCHES SECOND END IN |
| First Step Nominal Length | 0.190 INCHES SECOND END IN |
| First Step Nominal Length | 0.320 INCHES FIRST END IN |
| Mounting Hole Nominal Diameter | 0.600 INCHES TRANSVERSELY THROUGH HUB FIRST END IN |
| Nominal Overall Length | 1.300 INCHES IN |
| Second Step Nominal Length | 0.240 INCHES SECOND END IN |
| Second Step Nominal Length | 0.160 INCHES FIRST END IN |
| Style Designator | PROTRUDING HUBS |
| Material Document and Classification | MIL-S-7720,COMP 303S MIL SPEC SINGLE MATERIAL RESPONSE OVERALL |
| Pitch Diameter | 1.6870 INCHES NOMINAL IN |
| Tooth Form | STANDARD |
| First Step Nominal Diameter | 0.438 INCHES SECOND END IN |
| First Step Nominal Diameter | 0.181 INCHES FIRST END IN |
| Hub Style Designator | 2 STEPS BOTH ENDS |
| End Nominal Length | 0.140 INCHES SECOND END IN |
| Nominal Outside Diameter | 1.781 INCHES IN |
| End Nominal Diameter | 0.187 INCHES BOTH ENDS IN |
| Pressure Angle | 20.0000 DEGREES |
| Material | STEEL COMP 303 OVERALL |
| Attachment Method | MOUNTING HOLE |
| Face Nominal Width | 0.075 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 |
|---|---|
| 514446-1 PRIMARY | Honeywell International, Inc Div Aerospace-Tucson (USA) |
| Reference | Meaning |
|---|---|
| 514446-1 | 5/9 Secondary reference Honeywell International Inc. Div Aerospace - Torrance |
| 514446-1 | 5/9 Secondary reference Alliedsignal Inc Dba Allied-Signal Aerospace Co |
NSN 3020-00-072-7122 is a Gear,spur, manufactured by Honeywell International, Inc Div Aerospace-Tucson, classified under FSC 3020, Gears, Pulleys, Sprockets, and Transmission Chain. Status: active.
NSN 3020-00-072-7122 has 1 manufacturer part number on file: 514446-1 (Honeywell International, Inc Div Aerospace-Tucson).
Key specifications for 514446-1: Bore Nominal Diameter: 0.250 INCHES BOTH ENDS IN; Teeth Quantity: 19; Second Step Nominal Diameter: 0.250 INCHES BOTH ENDS IN; Body Style: WEBBED, SOLID. 28 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.