The Gear,spur, cataloged under National Stock Number 3020-01-028-9339, 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 Dynalec Corporation. Government technical data includes 11 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through both NSN and commercial part number lookups. 3 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 3020-01-028-9339 |
| Primary Part Number | PK9A |
| Item Name | Gear,spur |
| FSC / FSG | 3020 / 30 — Gears, Pulleys, Sprockets, and Transmission Chain |
| Manufacturer | Dynalec Corporation |
| Status | ACTIVE |
| Bore Nominal Diameter | 0.375 INCHES BOTH ENDS IN |
| Teeth Quantity | 54 |
| Body Style | PLAIN, SOLID |
| Bore Style | PLAIN BOTH ENDS |
| Style Designator | HUBLESS |
| Pitch Diameter | 1.6870 INCHES NOMINAL IN |
| Tooth Form | STANDARD |
| Nominal Outside Diameter | 1.750 INCHES IN |
| Pressure Angle | 14.5000 DEGREES |
| Material | PLASTIC POLYAMIDE NYLON OVERALL |
| 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 |
|---|---|
| PK9A PRIMARY | Dynalec Corporation (USA) |
| Reference | Meaning |
|---|---|
| A3486A | 5/9 Secondary reference The Electric Tachometer Corp. |
| PK9A | 3/9 Design control — primary reference The Electric Tachometer Corp. |
| PK2001-1 PC 31 | 5/9 Secondary reference The Electric Tachometer Corp. |
NSN 3020-01-028-9339 is a Gear,spur, manufactured by Dynalec Corporation, classified under FSC 3020, Gears, Pulleys, Sprockets, and Transmission Chain. Status: active.
NSN 3020-01-028-9339 has 1 manufacturer part number on file: PK9A (Dynalec Corporation).
Key specifications for PK9A: Bore Nominal Diameter: 0.375 INCHES BOTH ENDS IN; Teeth Quantity: 54; Body Style: PLAIN, SOLID; Bore Style: PLAIN BOTH ENDS. 11 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.