The Gear,spur, cataloged under National Stock Number 3020-01-227-4276, 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 Lockheed Martin Corporation Div Rms - Mitchel Field. Government technical data includes 19 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through both NSN and commercial part number lookups. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 3 items share a part number with this NSN in the catalog (possible match — not a government interchangeability claim). Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 3020-01-227-4276 |
| Primary Part Number | 0775-20 |
| Item Name | Gear,spur |
| FSC / FSG | 3020 / 30 — Gears, Pulleys, Sprockets, and Transmission Chain |
| Manufacturer | Lockheed Martin Corporation Div Rms - Mitchel Field |
| Status | ACTIVE |
| Bore Nominal Diameter | 0.187 INCHES BOTH ENDS IN |
| Hub Nominal Diameter | 0.312 INCHES FIRST END IN |
| Teeth Quantity | 20 |
| Body Style | PLAIN, SOLID |
| Bore Style | PLAIN BOTH ENDS |
| Nominal Distance Between Body Face and Protruding Hub End | 0.250 INCHES FIRST END IN |
| Nominal Overall Length | 0.375 INCHES IN |
| Style Designator | PROTRUDING HUB |
| Bore Nominal Depth | 0.375 INCHES BOTH ENDS IN |
| Material Document and Classification | QQ-A-268,ALLOY 2024,T4 FED SPEC SINGLE MATERIAL RESPONSE OVERALL |
| Pitch Diameter | 0.4167 INCHES NOMINAL IN |
| Tooth Form | STANDARD |
| Hub Style Designator | PLAIN FIRST END |
| Specification/standard Data | 80205-NAS726 PROFESSIONAL/INDUSTRIAL ASSOCIATION STANDARD |
| Nominal Outside Diameter | 0.458 INCHES IN |
| Surface Treatment | ANODIZE OVERALL |
| Pressure Angle | 20.0000 DEGREES |
| Material | ALUMINUM ALLOY 2024 OVERALL |
| Face Nominal Width | 0.125 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 |
|---|---|
| 0775-20 | Lockheed Martin Corporation Div Rms - Mitchel Field (USA) |
| Reference | Meaning |
|---|---|
| NAS726 | 3/1 Design control — primary reference U.S. Government activity |
| NAS726D13020T2 | 3/2 Design control — primary reference U.S. Government activity |
NSN 3020-01-227-4276 is a Gear,spur, manufactured by Lockheed Martin Corporation Div Rms - Mitchel Field, classified under FSC 3020, Gears, Pulleys, Sprockets, and Transmission Chain. Status: active.
NSN 3020-01-227-4276 has 1 manufacturer part number on file: 0775-20 (Lockheed Martin Corporation Div Rms - Mitchel Field).
3 possible matches (shared part number, not a government interchangeability claim): 3020-01-233-5044, 3020-01-255-5585, 3020-01-373-4172. Verify interchangeability with system specifications before substitution.
Key specifications for 0775-20: Bore Nominal Diameter: 0.187 INCHES BOTH ENDS IN; Hub Nominal Diameter: 0.312 INCHES FIRST END IN; Teeth Quantity: 20; Body Style: PLAIN, SOLID. 19 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.