The Gear,spur, cataloged under National Stock Number 3020-01-468-8540, 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 Naval Sea Systems Command. Government technical data includes 18 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through both NSN and commercial part number lookups. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 7 items share a part number with this NSN in the catalog (possible match — not a government interchangeability claim). Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 3020-01-468-8540 |
| Primary Part Number | 97A0268 |
| Item Name | Gear,spur |
| FSC / FSG | 3020 / 30 — Gears, Pulleys, Sprockets, and Transmission Chain |
| Manufacturer | Naval Sea Systems Command |
| Status | ACTIVE |
| Hub Nominal Diameter | 0.860 INCHES FIRST END IN |
| Teeth Quantity | 20 |
| Body Style | PLAIN, WITH LIGHTENING HOLES |
| Bore Style | TAPERED FIRST END |
| Bore Style | FLATTED SIDES SECOND END |
| Nominal Distance Between Body Face and Protruding Hub End | 0.360 INCHES SECOND END IN |
| Style Designator | PROTRUDING HUB |
| Taper Major Nominal Diameter | 0.502 INCHES BETWEEN BODY AND FLANGE IN |
| Material Document and Classification | AISI 1215 HRS ASSN STD SINGLE MATERIAL RESPONSE OVERALL |
| Pitch Diameter | 1.0000 INCHES NOMINAL IN |
| Tooth Form | STANDARD |
| Hub Style Designator | PLAIN FIRST END |
| Nominal Outside Diameter | 1.100 INCHES IN |
| Nominal Radius | 0.251 INCHES SECOND END IN |
| Surface Treatment | OIL OVERALL |
| Pressure Angle | 20.0000 DEGREES |
| Material | STEEL COMP 1215 OVERALL |
| Face Nominal Width | 0.500 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 |
|---|---|
| 97A0268 PRIMARY | Naval Sea Systems Command (USA) |
| 528-7378786 PC59 PRIMARY | Naval Sea Systems Command (USA) |
| Reference | Meaning |
|---|---|
| YSS2020 | C/1 Advisory reference — outside the item-of-supply concept Emerson Electric Co Browning Mfg Div |
| 528-7378786 | D/9 Drawing number reference only Naval Sea Systems Command |
NSN 3020-01-468-8540 is a Gear,spur, manufactured by Naval Sea Systems Command, classified under FSC 3020, Gears, Pulleys, Sprockets, and Transmission Chain. Status: active.
NSN 3020-01-468-8540 has 2 manufacturer part numbers on file: 97A0268 (Naval Sea Systems Command), 528-7378786 PC59 (Naval Sea Systems Command).
7 possible matches (shared part number, not a government interchangeability claim): 3020-01-468-8765, 5315-01-468-9130, 5315-01-468-9133. Verify interchangeability with system specifications before substitution.
Key specifications for 97A0268: Hub Nominal Diameter: 0.860 INCHES FIRST END IN; Teeth Quantity: 20; Body Style: PLAIN, WITH LIGHTENING HOLES; Bore Style: TAPERED FIRST END. 18 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.