The Gear,spur, cataloged under National Stock Number 3020-00-997-2794, 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 2 manufacturer part numbers for this item, enabling identification through both NSN and commercial part number lookups. 3 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 3020-00-997-2794 |
| Primary Part Number | 1412581-90 |
| 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 | 0.188 INCHES BOTH ENDS IN |
| Hub Nominal Diameter | 0.250 INCHES FIRST END IN |
| Backlash Designation | GRADE E |
| Teeth Quantity | 90 |
| Clamping Surface Nominal Length | 0.245 INCHES FIRST END IN |
| Body Style | PLAIN, SOLID |
| Bore Style | PLAIN BOTH ENDS |
| Nominal Distance Between Body Face and Protruding Hub End | 0.285 INCHES FIRST END IN |
| Precision Classification | QUALITY NUMBER 10 OR QUALITY NUMBER 11 |
| Style Designator | PROTRUDING HUB |
| Material Document and Classification | QQ-A-225/8,T6 FED SPEC SINGLE MATERIAL RESPONSE OVERALL |
| Pitch Diameter | 1.8750 INCHES NOMINAL IN |
| Tooth Form | STANDARD |
| Hub Style Designator | SPLIT FIRST END |
| Nominal Outside Diameter | 1.917 INCHES IN |
| Pressure Angle | 20.0000 DEGREES |
| Material | ALUMINUM ALLOY 6061 OVERALL |
| Attachment Method | CLAMP |
| Face Nominal Width | 0.065 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 |
|---|---|
| 1412581-90 PRIMARY | Lockheed Martin Corporation Div Rms - Mitchel Field (USA) |
| 45-036-90 | Lockheed Martin Corporation Div Rms - Mitchel Field (USA) |
| Reference | Meaning |
|---|---|
| 45-036-90 | 5/9 Secondary reference Profile Gear Corp |
| 1412581 | D/9 Drawing number reference only Lockheed Martin Corporation Div Rms - Mitchel Field |
| 1412581-90REVB | C/1 Advisory reference — outside the item-of-supply concept Naval Sea Systems Command |
NSN 3020-00-997-2794 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 3020-00-997-2794 has 2 manufacturer part numbers on file: 1412581-90 (Lockheed Martin Corporation Div Rms - Mitchel Field), 45-036-90 (Lockheed Martin Corporation Div Rms - Mitchel Field).
Key specifications for 1412581-90: Bore Nominal Diameter: 0.188 INCHES BOTH ENDS IN; Hub Nominal Diameter: 0.250 INCHES FIRST END IN; Backlash Designation: GRADE E; Teeth Quantity: 90. 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.