The Gear,worm Wheel, cataloged under National Stock Number 3020-00-986-7307, 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 The Dewey Electronics Corporation Div Pitometer Log Division. Government technical data includes 12 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through both NSN and commercial part number lookups. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog.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 | 3020-00-986-7307 |
| Primary Part Number | K1657 |
| Item Name | Gear,worm Wheel |
| FSC / FSG | 3020 / 30 — Gears, Pulleys, Sprockets, and Transmission Chain |
| Manufacturer | The Dewey Electronics Corporation Div Pitometer Log Division |
| Status | ACTIVE |
| Bore Nominal Diameter | 0.156 INCHES BOTH ENDS IN |
| Teeth Quantity | 34 |
| Clamping Surface Nominal Length | 0.2187 INCHES FIRST END IN |
| Body Style | PLAIN, SOLID |
| Bore Style | PLAIN BOTH ENDS |
| Nominal Distance Between Body Face and Protruding Hub End | 0.219 INCHES FIRST END IN |
| Style Designator | PROTRUDING HUB |
| Hub Style Designator | 1 STEP FIRST END |
| Nominal Outside Diameter | 0.547 INCHES IN |
| Material | COPPER ALLOY OVERALL |
| Attachment Method | CLAMP |
| Face Nominal Width | 0.187 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 |
|---|---|
| K1657 | Dynalec Corporation (USA) |
| K1657 PRIMARY | The Dewey Electronics Corporation Div Pitometer Log Division (USA) |
| Reference | Meaning |
|---|---|
| K1657 | 5/9 Secondary reference The Electric Tachometer Corp. |
| PR3406-1PIECE80 | C/1 Advisory reference — outside the item-of-supply concept Dynalec Corporation |
NSN 3020-00-986-7307 is a Gear,worm Wheel, manufactured by The Dewey Electronics Corporation Div Pitometer Log Division, classified under FSC 3020, Gears, Pulleys, Sprockets, and Transmission Chain. Status: active.
NSN 3020-00-986-7307 has 2 manufacturer part numbers on file: K1657 (Dynalec Corporation), K1657 (The Dewey Electronics Corporation Div Pitometer Log Division).
Key specifications for K1657: Bore Nominal Diameter: 0.156 INCHES BOTH ENDS IN; Teeth Quantity: 34; Clamping Surface Nominal Length: 0.2187 INCHES FIRST END IN; Body Style: PLAIN, SOLID. 12 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.