The Gear Sector,spur, cataloged under National Stock Number 3020-01-025-7702, 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 Navy, United States Department of the Dba Space & Naval Warfare Systems Center, Atlantic. Government technical data includes 29 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 3020-01-025-7702 |
| Primary Part Number | 43037-022-00270 |
| Item Name | Gear Sector,spur |
| FSC / FSG | 3020 / 30 — Gears, Pulleys, Sprockets, and Transmission Chain |
| Manufacturer | Navy, United States Department of the Dba Space & Naval Warfare Systems Center, Atlantic |
| Status | ACTIVE |
| Bore Nominal Diameter | 4.251 INCHES COUNTER BORE SECOND END IN |
| Hub Nominal Diameter | 6.250 INCHES SECOND END IN |
| Teeth Quantity | 152 |
| Second Step Nominal Diameter | 6.250 INCHES FIRST END IN |
| Nominal Outside Radius | 6.977 INCHES IN |
| Counterbore Nominal Diameter | 5.396 INCHES COUNTER BORE SECOND END IN |
| Bore Style | W/COUNTERBORE COUNTER BORE SECOND END |
| Mounting Hole Type and Quantity | 8 THREADED AXIALLY THROUGH HUB FIRST END |
| Nominal Distance Between Body Face and Protruding Hub End | 0.751 INCHES SECOND END IN |
| Nominal Distance Between Body Face and Protruding Hub End | 3.374 INCHES FIRST END IN |
| First Step Nominal Length | 2.363 INCHES FIRST END IN |
| Second Step Nominal Length | 0.391 INCHES FIRST END IN |
| Style Designator | PROTRUDING HUBS |
| Material Document and Classification | AMS 6260 ASSN STD SINGLE MATERIAL RESPONSE OVERALL |
| Tooth Form | STANDARD |
| First Step Nominal Diameter | 5.751 INCHES FIRST END IN |
| Hub Style Designator | 2 STEPS FIRST END |
| Hub Style Designator | PLAIN SECOND END |
| Mounting Hole Nominal Thread Size | 0.375 INCHES AXIALLY THROUGH HUB FIRST END IN |
| End Nominal Length | 0.620 INCHES FIRST END IN |
| Pitch Radius | 0.9090 INCHES NOMINAL IN |
| End Nominal Diameter | 5.625 INCHES FIRST END IN |
| Pressure Angle | 25.0000 DEGREES |
| Material | STEEL COMP E9310 OVERALL |
| Bolt Hole Circle Nominal Diameter | 5.000 INCHES AXIALLY THROUGH HUB FIRST END IN |
| Counterbore Nominal Depth | 3.845 INCHES COUNTER BORE SECOND END IN |
| Mounting Hole Thread Series Designator | UNF AXIALLY THROUGH HUB FIRST END |
| Attachment Method | MOUNTING HOLE |
| Face Nominal Width | 0.875 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 |
|---|---|
| 43037-022-00270 | Equitable Engineering Company Inc. (USA) |
| 43037-022-00270 PRIMARY | Navy, United States Department of the Dba Space & Naval Warfare Systems Center, Atlantic (USA) |
| Reference | Meaning |
|---|---|
| BAS24321 | 5/9 Secondary reference U.S. Government activity |
NSN 3020-01-025-7702 is a Gear Sector,spur, manufactured by Navy, United States Department of the Dba Space & Naval Warfare Systems Center, Atlantic, classified under FSC 3020, Gears, Pulleys, Sprockets, and Transmission Chain. Status: active.
NSN 3020-01-025-7702 has 2 manufacturer part numbers on file: 43037-022-00270 (Equitable Engineering Company Inc.), 43037-022-00270 (Navy, United States Department of the Dba Space & Naval Warfare Systems Center, Atlantic).
Key specifications for 43037-022-00270: Bore Nominal Diameter: 4.251 INCHES COUNTER BORE SECOND END IN; Hub Nominal Diameter: 6.250 INCHES SECOND END IN; Teeth Quantity: 152; Second Step Nominal Diameter: 6.250 INCHES FIRST END IN. 29 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.