The Gear,worm Wheel, cataloged under National Stock Number 3020-01-436-7768, 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 16 specifications, cited from the U.S. Government catalog. The record lists 3 manufacturer part numbers 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. 1 item shares a part number with this NSN in the catalog (possible match — not a government interchangeability claim). Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 3020-01-436-7768 |
| Primary Part Number | 218016527 |
| Item Name | Gear,worm Wheel |
| FSC / FSG | 3020 / 30 — Gears, Pulleys, Sprockets, and Transmission Chain |
| Manufacturer | Naval Sea Systems Command |
| Status | ACTIVE |
| Bore Nominal Diameter | 10.0000 INCHES BOTH ENDS IN |
| Body Style | PLAIN, SOLID |
| Bore Style | PLAIN BOTH ENDS |
| Mounting Hole Type and Quantity | 12 PLAIN AXIALLY THROUGH BODY FIRST END |
| Face Type | CONCAVE |
| Mounting Hole Nominal Diameter | 0.6880 INCHES AXIALLY THROUGH BODY FIRST END IN |
| Style Designator | HUBLESS, RECESSED BODY |
| Material Document and Classification | QQ-C-390 ASSN STD SINGLE MATERIAL RESPONSE OVERALL |
| Pitch Diameter | 16.3300 INCHES NOMINAL IN |
| Nominal Outside Diameter | 17.0500 INCHES IN |
| Material | COPPER ALLOY OVERALL |
| Bolt Hole Circle Nominal Diameter | 11.7500 INCHES AXIALLY THROUGH BODY FIRST END IN |
| Attachment Method | MOUNTING HOLE |
| Body Recess Nominal Depth | 0.5000 INCHES FIRST END IN |
| Body Recess Nominal Depth | 1.3750 INCHES SECOND END IN |
| Face Nominal Width | 2.7500 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 |
|---|---|
| DF2011-235 FN AHDA-B8 | Huntington Ingalls Inc Div Newport News Shipbuilding (USA) |
| 218016527 PRIMARY | Naval Sea Systems Command (USA) |
| 581-6405749 FIND AHDA-B8 | Naval Sea Systems Command (USA) |
| Reference | Meaning |
|---|---|
| 6405749 | D/9 Drawing number reference only Naval Sea Systems Command |
NSN 3020-01-436-7768 is a Gear,worm Wheel, manufactured by Naval Sea Systems Command, classified under FSC 3020, Gears, Pulleys, Sprockets, and Transmission Chain. Status: active.
NSN 3020-01-436-7768 has 3 manufacturer part numbers on file: DF2011-235 FN AHDA-B8 (Huntington Ingalls Inc Div Newport News Shipbuilding), 218016527 (Naval Sea Systems Command), 581-6405749 FIND AHDA-B8 (Naval Sea Systems Command).
1 possible match (shared part number, not a government interchangeability claim): 3010-01-436-9552. Verify interchangeability with system specifications before substitution.
Key specifications for 218016527: Bore Nominal Diameter: 10.0000 INCHES BOTH ENDS IN; Body Style: PLAIN, SOLID; Bore Style: PLAIN BOTH ENDS; Mounting Hole Type and Quantity: 12 PLAIN AXIALLY THROUGH BODY FIRST END. 16 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.