The Gear,spur, cataloged under National Stock Number 3020-01-180-0629, 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 Fairbanks Morse, Llc. Government technical data includes 21 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 3020-01-180-0629 |
| Primary Part Number | P12615076 |
| Item Name | Gear,spur |
| FSC / FSG | 3020 / 30 — Gears, Pulleys, Sprockets, and Transmission Chain |
| Manufacturer | Fairbanks Morse, Llc |
| Status | ACTIVE |
| Bore Nominal Diameter | 2.559 INCHES BOTH ENDS IN |
| Teeth Quantity | 11 |
| Body Style | PLAIN, SOLID |
| Bore Style | INVOLUTE SPLINE BOTH ENDS |
| Nominal Distance Between Body Face and Protruding Hub End | 1.732 INCHES FIRST END IN |
| First Step Nominal Length | 1.187 INCHES FIRST END IN |
| Hardness Rating | 269.0 BRINELL STANDARD MINIMUM AND 311.0 BRINELL STANDARD MAXIMUM OVERALL |
| Style Designator | PROTRUDING HUB |
| Material Document and Classification | 66AISI/SAE4140 FED STD SINGLE MATERIAL RESPONSE OVERALL |
| Pitch Diameter | 4.3307 INCHES NOMINAL IN |
| Tooth Form | STANDARD |
| First Step Nominal Diameter | 3.691 INCHES FIRST END IN |
| Hub Style Designator | 1 STEP FIRST END |
| Spline Quantity | 11 BOTH ENDS |
| End Nominal Length | 14.0 MILLIMETERS FIRST END MM |
| Nominal Outside Diameter | 5.510 INCHES IN |
| End Nominal Diameter | 5.504 INCHES FIRST END IN |
| Pressure Angle | 20.0000 DEGREES |
| Material | STEEL COMP 4140 OVERALL |
| Spline Pitch Diameter | 2.1654 INCHES NOMINAL BOTH ENDS IN |
| Face Nominal Width | 2.008 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 |
|---|---|
| P12615076 PRIMARY | Fairbanks Morse, Llc (USA) |
| Reference | Meaning |
|---|---|
| P12615076 | 3/9 Design control — primary reference U.S. Government activity |
NSN 3020-01-180-0629 is a Gear,spur, manufactured by Fairbanks Morse, Llc, classified under FSC 3020, Gears, Pulleys, Sprockets, and Transmission Chain. Status: active.
NSN 3020-01-180-0629 has 1 manufacturer part number on file: P12615076 (Fairbanks Morse, Llc).
Key specifications for P12615076: Bore Nominal Diameter: 2.559 INCHES BOTH ENDS IN; Teeth Quantity: 11; Body Style: PLAIN, SOLID; Bore Style: INVOLUTE SPLINE BOTH ENDS. 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.