The Gear,spur, cataloged under National Stock Number 3020-01-142-1739, 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 L3harris Technologies, Inc Div Space & Airborne Systems. Government technical data includes 26 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. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 3020-01-142-1739 |
| Primary Part Number | 170707 |
| Item Name | Gear,spur |
| FSC / FSG | 3020 / 30 — Gears, Pulleys, Sprockets, and Transmission Chain |
| Manufacturer | L3harris Technologies, Inc Div Space & Airborne Systems |
| Status | ACTIVE |
| Bore Nominal Diameter | 0.388 INCHES BOTH ENDS0.388 INCHES BOTH ENDS IN |
| Hub Nominal Diameter | 0.750 INCHES SECOND END0.750 INCHES SECOND END IN |
| Hub Nominal Diameter | 0.457 INCHES FIRST END0.457 INCHES FIRST END IN |
| Teeth Quantity | 7474 |
| Clamping Surface Nominal Length | 0.380 INCHES FIRST END0.380 INCHES FIRST END IN |
| Surface Treatment Document and Classification | MIL-P-16232,CLASS 3 MIL SPEC ALL TREATMENT RESPONSES OVERALLMIL-P-16232,CLASS 3 MIL SPEC ALL TREATMENT RESPONSES OVERALL |
| Body Style | PLAIN, SOLIDPLAIN, SOLID |
| Bore Style | PLAIN BOTH ENDSPLAIN BOTH ENDS |
| Nominal Distance Between Body Face and Protruding Hub End | 0.375 INCHES SECOND END0.375 INCHES SECOND END IN |
| Nominal Distance Between Body Face and Protruding Hub End | 0.500 INCHES FIRST END0.500 INCHES FIRST END IN |
| Precision Classification | QUALITY NUMBER 9QUALITY NUMBER 9 |
| Style Designator | PROTRUDING HUBSPROTRUDING HUBS |
| Material Document and Classification | MIL-S-5000 MIL SPEC SINGLE MATERIAL RESPONSE OVERALLMIL-S-5000 MIL SPEC SINGLE MATERIAL RESPONSE OVERALL |
| Pitch Diameter | 4.6250 INCHES NOMINAL4.6250 INCHES NOMINAL IN |
| Tooth Form | STANDARDSTANDARD |
| Hub Style Designator | 1 GROOVE SECOND END1 GROOVE SECOND END |
| Hub Style Designator | SPLIT FIRST ENDSPLIT FIRST END |
| Nominal Outside Diameter | 4.750 INCHES4.750 INCHES IN |
| Surface Treatment | PHOSPHATE MANGANESE OR PHOSPHATE MANGANESE OR PHOSPHATE ZINC OVERALLPHOSPHATE ZINC OVERALL |
| Nominal Distance From End to First Groove | 0.191 INCHES SECOND END0.191 INCHES SECOND END IN |
| Pressure Angle | 20.0000 DEGREES20.0000 DEGREES |
| Material | STEEL COMP 4340 OVERALL |
| First Groove Nominal Diameter | 0.701 INCHES SECOND END0.701 INCHES SECOND END IN |
| First Groove Nominal Width | 0.049 INCHES SECOND END0.049 INCHES SECOND END IN |
| Attachment Method | CLAMPCLAMP |
| Face Nominal Width | 0.125 INCHES0.125 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 |
|---|---|
| 170707 PRIMARY | L3harris Technologies, Inc Div Space & Airborne Systems (USA) |
NSN 3020-01-142-1739 is a Gear,spur, manufactured by L3harris Technologies, Inc Div Space & Airborne Systems, classified under FSC 3020, Gears, Pulleys, Sprockets, and Transmission Chain. Status: active.
NSN 3020-01-142-1739 has 1 manufacturer part number on file: 170707 (L3harris Technologies, Inc Div Space & Airborne Systems).
Key specifications for 170707: Bore Nominal Diameter: 0.388 INCHES BOTH ENDS0.388 INCHES BOTH ENDS IN; Hub Nominal Diameter: 0.750 INCHES SECOND END0.750 INCHES SECOND END IN; Hub Nominal Diameter: 0.457 INCHES FIRST END0.457 INCHES FIRST END IN; Teeth Quantity: 7474. 26 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.