The Gear,helical, cataloged under National Stock Number 3020-01-122-5181, 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 Rolls-Royce Solutions America Inc. Government technical data includes 21 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through both NSN and commercial part number lookups. 3 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog.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 | 3020-01-122-5181 |
| Primary Part Number | 5107083 |
| Item Name | Gear,helical |
| FSC / FSG | 3020 / 30 — Gears, Pulleys, Sprockets, and Transmission Chain |
| Manufacturer | Rolls-Royce Solutions America Inc |
| Status | ACTIVE |
| Helix Angle | 22.5000 DEGREES |
| Teeth Quantity | 45 |
| Body Style | PLAIN, SOLID |
| Tooth Direction | LEFT |
| Bore Style | SERRATED BOTH ENDS |
| Mounting Hole Type and Quantity | 4 PLAIN AND 4 THREADED AXIALLY THROUGH BODY FIRST END |
| Serration Pitch Diameter | 0.7310 INCHES NOMINAL BOTH ENDS IN |
| Mounting Hole Nominal Diameter | 0.125 INCHES AXIALLY THROUGH BODY FIRST END IN |
| Teeth Type | SINGLE HELIX |
| Style Designator | HUBLESS |
| Pitch Diameter | 2.8125 INCHES NOMINAL IN |
| Tooth Form | STANDARD |
| Mounting Hole Nominal Thread Size | 0.250 INCHES AXIALLY THROUGH BODY FIRST END IN |
| Nominal Outside Diameter | 3.125 INCHES IN |
| Serration Quantity | 48 BOTH ENDS |
| Pressure Angle | 14.5000 DEGREES |
| Material | STEEL CORROSION RESISTING OVERALL |
| Bolt Hole Circle Nominal Diameter | 1.359 INCHES AND 1.812 INCHES AXIALLY THROUGH BODY FIRST END IN |
| Mounting Hole Thread Series Designator | UNF AXIALLY THROUGH BODY FIRST END |
| Attachment Method | MOUNTING HOLE |
| Face Nominal Width | 0.766 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 |
|---|---|
| B5107083 | Federal-Mogul Corporation Dba Federal-Mogul Div Fp Diesel (USA) |
| 5107083 PRIMARY | Rolls-Royce Solutions America Inc (USA) |
| Reference | Meaning |
|---|---|
| 3020011225181 | 6/9 Informative reference only E.c.a Etablissement Central Des Approvisionnements Des Forces Armees Royales |
| K-5107083 | 5/9 Secondary reference Korody-Colyer Corp a Cr Industries Co |
| PC5107083 | 5/9 Secondary reference Power Components (deutschland) Gmbh |
NSN 3020-01-122-5181 is a Gear,helical, manufactured by Rolls-Royce Solutions America Inc, classified under FSC 3020, Gears, Pulleys, Sprockets, and Transmission Chain. Status: active.
NSN 3020-01-122-5181 has 2 manufacturer part numbers on file: B5107083 (Federal-Mogul Corporation Dba Federal-Mogul Div Fp Diesel), 5107083 (Rolls-Royce Solutions America Inc).
Key specifications for 5107083: Helix Angle: 22.5000 DEGREES; Teeth Quantity: 45; Body Style: PLAIN, SOLID; Tooth Direction: LEFT. 21 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.