The Gear,antibacklash,spur, cataloged under National Stock Number 3020-01-407-2301, 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 Electromechanical Systems, Inc.. Government technical data includes 17 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through both NSN and commercial part number lookups. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 3020-01-407-2301 |
| Primary Part Number | 34636-5015-1 |
| Item Name | Gear,antibacklash,spur |
| FSC / FSG | 3020 / 30 — Gears, Pulleys, Sprockets, and Transmission Chain |
| Manufacturer | Electromechanical Systems, Inc. |
| Status | ACTIVE |
| Bore Nominal Diameter | 0.250 INCHES BOTH ENDS IN |
| Hub Nominal Diameter | 0.312 INCHES SECOND END IN |
| Teeth Quantity | 34 |
| Clamping Surface Nominal Length | 0.250 INCHES SECOND END IN |
| Surface Treatment Document and Classification | QQ-P-35 TYPE II FED SPEC SINGLE TREATMENT RESPONSE OVERALL |
| Bore Style | PLAIN BOTH ENDS |
| Nominal Distance Between Body Face and Protruding Hub End | 0.310 INCHES SECOND END IN |
| Style Designator | PROTRUDING HUB |
| Material Document and Classification | QQ-S-764 FED SPEC SINGLE MATERIAL RESPONSE OVERALL |
| Pitch Diameter | 4.8571 INCHES NOMINAL IN |
| Tooth Form | STUB |
| Hub Style Designator | SPLIT SECOND END |
| Nominal Outside Diameter | 5.143 INCHES IN |
| Surface Treatment | PASSIVATE OVERALL |
| Pressure Angle | 20.0000 DEGREES |
| Material | STEEL COMP 303 OVERALL |
| Face Nominal Width | 0.250 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 |
|---|---|
| 34636-5015-1 PRIMARY | Electromechanical Systems, Inc. (USA) |
| 34636-5015-1 | Southern Gear & Machine Inc (USA) |
| Reference | Meaning |
|---|---|
| 34636-5015 | 5/9 Secondary reference A B a Industries Inc |
| 34636-5015-1 | 5/9 Secondary reference A B a Industries Inc |
NSN 3020-01-407-2301 is a Gear,antibacklash,spur, manufactured by Electromechanical Systems, Inc., classified under FSC 3020, Gears, Pulleys, Sprockets, and Transmission Chain. Status: active.
NSN 3020-01-407-2301 has 2 manufacturer part numbers on file: 34636-5015-1 (Electromechanical Systems, Inc.), 34636-5015-1 (Southern Gear & Machine Inc).
Key specifications for 34636-5015-1: Bore Nominal Diameter: 0.250 INCHES BOTH ENDS IN; Hub Nominal Diameter: 0.312 INCHES SECOND END IN; Teeth Quantity: 34; Clamping Surface Nominal Length: 0.250 INCHES SECOND END IN. 17 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.