The Gear,spur, cataloged under National Stock Number 3020-01-436-8744, is classified within Federal Supply Class 3020 (Gears, Pulleys, Sprockets, and Transmission Chain) of the Mechanical Power Transmission Equipment group. Government technical data includes 22 specifications, cited from the U.S. Government catalog. 4 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 2 items share a part number with this NSN in the catalog (possible match — not a government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 | 3020-01-436-8744 |
| Item Name | Gear,spur |
| FSC / FSG | 3020 / 30 — Gears, Pulleys, Sprockets, and Transmission Chain |
| Status | ACTIVE |
| Keyway Nominal Width | 0.249 INCHES BOTH ENDS IN |
| Bore Nominal Diameter | 1.250 INCHES BOTH ENDS IN |
| Hub Nominal Diameter | 2.750 INCHES SECOND END IN |
| Teeth Quantity | 64 |
| Body Style | PLAIN, SOLID |
| Bore Style | W/ KEYWAY BOTH ENDS |
| Mounting Hole Type and Quantity | 2 THREADED AXIALLY THROUGH HUB SECOND END |
| Nominal Distance Between Body Face and Protruding Hub End | 2.250 INCHES BOTH ENDS IN |
| Style Designator | PROTRUDING HUB |
| Material Document and Classification | ASTM B584-C86200 ASSN STD SINGLE MATERIAL RESPONSE OVERALL |
| Pitch Diameter | 8.0000 INCHES NOMINAL IN |
| Tooth Form | STANDARD |
| Hub Style Designator | PINNED SECOND END |
| Mounting Hole Nominal Thread Size | 0.375 INCHES AXIALLY THROUGH HUB SECOND END IN |
| Nominal Outside Diameter | 8.250 INCHES IN |
| Mounting Hole Thread Quantity Per Inch | 16 AXIALLY THROUGH HUB SECOND END |
| Nominal Distance From Bore Center to Keyway Bottom | 0.752 INCHES BOTH ENDS IN |
| Pressure Angle | 20.0000 DEGREES |
| Material | BRONZE OVERALL |
| Mounting Hole Thread Series Designator | UNIFIED NATIONAL COARSE (UNC) AXIALLY THROUGH HUB SECOND END |
| Attachment Method | MOUNTING HOLE |
| Face Nominal Width | 1.250 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 |
| Reference | Meaning |
|---|---|
| H554AP001 | D/9 Drawing number reference only U.S. Government activity |
| H554AP001 FIND NO. 4 | 5/2 Secondary reference U.S. Government activity |
| 117404 | 5/2 Secondary reference U.S. Government activity |
| C554AP005 | 3/2 Design control — primary reference U.S. Government activity |
NSN 3020-01-436-8744 is a Gear,spur, classified under FSC 3020, Gears, Pulleys, Sprockets, and Transmission Chain. Status: active.
2 possible matches (shared part number, not a government interchangeability claim): 3020-01-437-0713, 2990-01-437-7520. Verify interchangeability with system specifications before substitution.
Key specifications for 3020-01-436-8744: Keyway Nominal Width: 0.249 INCHES BOTH ENDS IN; Bore Nominal Diameter: 1.250 INCHES BOTH ENDS IN; Hub Nominal Diameter: 2.750 INCHES SECOND END IN; Teeth Quantity: 64. 22 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.