The Gear,spur, cataloged under National Stock Number 3020-01-425-3640, 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 Walker Power Systems, Inc. Dba Tiernay Turbines. 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 3020-01-425-3640 |
| Primary Part Number | 107435-1 |
| Item Name | Gear,spur |
| FSC / FSG | 3020 / 30 — Gears, Pulleys, Sprockets, and Transmission Chain |
| Manufacturer | Walker Power Systems, Inc. Dba Tiernay Turbines |
| Status | ACTIVE |
| Bore Nominal Diameter | 0.585 INCHES BOTH ENDS IN |
| Teeth Quantity | 23 |
| Body Style | PLAIN, SOLID |
| Bore Style | PLAIN BOTH ENDS |
| Nominal Distance Between Body Face and Protruding Hub End | 0.715 INCHES BOTH ENDS IN |
| First Step Nominal Length | 0.013 INCHES BOTH ENDS IN |
| Precision Classification | QUALITY NUMBER 10 |
| Hardness Rating | 33.0 ROCKWELL C MINIMUM AND 43.0 ROCKWELL C MAXIMUM BORE SURFACE |
| Hardness Rating | 33.0 ROCKWELL C MINIMUM AND 43.0 ROCKWELL C MAXIMUM TEETH |
| Style Designator | PROTRUDING HUBS |
| Material Document and Classification | AMS SAE9310 ASSN STD SINGLE MATERIAL RESPONSE OVERALL |
| Pitch Diameter | 0.9583 INCHES NOMINAL IN |
| First Step Nominal Diameter | 0.940 INCHES BOTH ENDS IN |
| Hub Style Designator | 1 STEP BOTH ENDS |
| End Nominal Length | 0.580 INCHES BOTH ENDS IN |
| Nominal Outside Diameter | 1.038 INCHES IN |
| Surface Treatment | CARBON OVERALL |
| End Nominal Diameter | 0.787 INCHES BOTH ENDS IN |
| Pressure Angle | 25.0000 DEGREES |
| Material | STEEL COMP E9310 OVERALL |
| Face Nominal Width | 0.944 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 |
|---|---|
| 107436-1 | General Dynamics Robotic Systems Inc Div General Dynamics Land Systems Inc. (USA) |
| 107435-1 PRIMARY | Walker Power Systems, Inc. Dba Tiernay Turbines (USA) |
| Reference | Meaning |
|---|---|
| 107435 | D/9 Drawing number reference only Walker Power Systems, Inc. Dba Tiernay Turbines |
NSN 3020-01-425-3640 is a Gear,spur, manufactured by Walker Power Systems, Inc. Dba Tiernay Turbines, classified under FSC 3020, Gears, Pulleys, Sprockets, and Transmission Chain. Status: active.
NSN 3020-01-425-3640 has 2 manufacturer part numbers on file: 107436-1 (General Dynamics Robotic Systems Inc Div General Dynamics Land Systems Inc.), 107435-1 (Walker Power Systems, Inc. Dba Tiernay Turbines).
Key specifications for 107435-1: Bore Nominal Diameter: 0.585 INCHES BOTH ENDS IN; Teeth Quantity: 23; Body Style: PLAIN, SOLID; Bore Style: PLAIN 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.