The Gear,spur, cataloged under National Stock Number 3020-00-989-7934, 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 Viking Technologies, Ltd.. Government technical data includes 25 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog.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 | 3020-00-989-7934 |
| Primary Part Number | A16984ISSUEC |
| Item Name | Gear,spur |
| FSC / FSG | 3020 / 30 — Gears, Pulleys, Sprockets, and Transmission Chain |
| Manufacturer | Viking Technologies, Ltd. |
| Status | ACTIVE |
| Bore Nominal Diameter | 0.125 INCHES BOTH ENDS IN |
| Hub Nominal Diameter | 0.250 INCHES FIRST END IN |
| Backlash Designation | GRADE C |
| Teeth Quantity | 18 |
| Body Style | PLAIN, SOLID |
| Bore Style | PLAIN BOTH ENDS |
| Mounting Hole Type and Quantity | 2 THREADED TRANSVERSELY THROUGH HUB FIRST END |
| Nominal Distance Between Body Face and Protruding Hub End | 0.219 INCHES FIRST END IN |
| Precision Classification | QUALITY NUMBER 10 OR QUALITY NUMBER 11 |
| Style Designator | PROTRUDING HUB |
| Pitch Diameter | 0.2500 INCHES NOMINAL IN |
| Tooth Form | STANDARD |
| Hub Style Designator | 1 GROOVE FIRST END |
| Mounting Hole Nominal Thread Size | 0.086 INCHES TRANSVERSELY THROUGH HUB FIRST END IN |
| Nominal Outside Diameter | 0.278 INCHES IN |
| Mounting Hole Thread Quantity Per Inch | 56 TRANSVERSELY THROUGH HUB FIRST END |
| Nominal Distance From End to First Groove | 0.203 INCHES FIRST END IN |
| End Nominal Diameter | 0.250 INCHES FIRST END IN |
| Pressure Angle | 20.0000 DEGREES |
| Material | COPPER ALLOY OVERALL |
| First Groove Nominal Diameter | 0.203 INCHES FIRST END IN |
| First Groove Nominal Width | 0.032 INCHES FIRST END IN |
| Mounting Hole Thread Series Designator | UNIFIED NATIONAL COARSE (UNC) TRANSVERSELY THROUGH HUB FIRST END |
| Attachment Method | MOUNTING HOLE |
| Face Nominal Width | 0.062 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 |
|---|---|
| A16984ISSUEC | Viking Technologies, Ltd. (USA) |
| Reference | Meaning |
|---|---|
| A16984ISSUEC | 3/9 Design control — primary reference Dar Electronics Inc Dba National Radio Co |
NSN 3020-00-989-7934 is a Gear,spur, manufactured by Viking Technologies, Ltd., classified under FSC 3020, Gears, Pulleys, Sprockets, and Transmission Chain. Status: active.
NSN 3020-00-989-7934 has 1 manufacturer part number on file: A16984ISSUEC (Viking Technologies, Ltd.).
Key specifications for A16984ISSUEC: Bore Nominal Diameter: 0.125 INCHES BOTH ENDS IN; Hub Nominal Diameter: 0.250 INCHES FIRST END IN; Backlash Designation: GRADE C; Teeth Quantity: 18. 25 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.