The Gear,spur, cataloged under National Stock Number 3020-00-554-7785, 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 Navsurfwarcen Det Picatinny. Government technical data includes 30 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. 1 item shares a part number with this NSN in the catalog (possible match — not a government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 | 3020-00-554-7785 |
| Primary Part Number | BUWEPSDWG1320461 |
| Item Name | Gear,spur |
| FSC / FSG | 3020 / 30 — Gears, Pulleys, Sprockets, and Transmission Chain |
| Manufacturer | Navsurfwarcen Det Picatinny |
| Status | ACTIVE |
| Bore Nominal Diameter | 1.250 INCHES BOTH ENDS IN |
| Hub Nominal Diameter | 1.625 INCHES SECOND END IN |
| Teeth Quantity | 112 |
| Second Step Nominal Diameter | 2.625 INCHES FIRST END IN |
| Surface Treatment Document and Classification | MIL-C-16232 MIL SPEC SINGLE TREATMENT RESPONSE OVERALL |
| Counterbore Nominal Diameter | 1.375 INCHES BOTH ENDS IN |
| Bore Style | W/COUNTERBORE BOTH ENDS |
| Mounting Hole Type and Quantity | 3 THREADED AXIALLY THROUGH BODY FIRST END |
| Nominal Distance Between Body Face and Protruding Hub End | 0.343 INCHES FIRST END IN |
| Nominal Distance Between Body Face and Protruding Hub End | 0.250 INCHES SECOND END IN |
| First Step Nominal Length | 0.061 INCHES FIRST END IN |
| Hardness Rating | 16.0 ROCKWELL C MINIMUM AND 25.0 ROCKWELL C MAXIMUM HUB |
| Hardness Rating | 16.0 ROCKWELL C MINIMUM AND 25.0 ROCKWELL C MAXIMUM TEETH |
| Nominal Overall Length | 0.781 INCHES IN |
| Second Step Nominal Length | 0.125 INCHES FIRST END IN |
| Style Designator | PROTRUDING HUBS |
| Material Document and Classification | FED STD 66,AISI/SAE 8637H FED STD SINGLE MATERIAL RESPONSE OVERALL |
| Pitch Diameter | 2.8000 INCHES NOMINAL IN |
| Tooth Form | STANDARD |
| First Step Nominal Diameter | 2.248 INCHES FIRST END IN |
| Hub Style Designator | 2 STEPS FIRST END |
| Hub Style Designator | PLAIN SECOND END |
| Mounting Hole Nominal Thread Size | 0.164 INCHES AXIALLY THROUGH BODY FIRST END IN |
| End Nominal Length | 0.156 INCHES FIRST END IN |
| Nominal Outside Diameter | 2.849 INCHES IN |
| Mounting Hole Thread Quantity Per Inch | 32 AXIALLY THROUGH BODY FIRST END |
| Surface Treatment | PHOSPHATE OVERALL |
| End Nominal Diameter | 1.531 INCHES FIRST END IN |
| Pressure Angle | 20.0000 DEGREES |
| Material | STEEL COMP 8637H OVERALL |
| 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 |
|---|---|
| BUWEPSDWG1320461 | Bae Systems Land & Armaments L.p. (USA) |
| 1320461 | Navair and Navsea Managed Original Design Activity Dwg Not Material/parts Supplier (USA) |
| BUWEPSDWG1320461 PRIMARY | Navsurfwarcen Det Picatinny (USA) |
| Reference | Meaning |
|---|---|
| BUWEPSDWG1320461 | 5/9 Secondary reference Department of the Navy Naval Surface Warfare Center Crane Detachment |
NSN 3020-00-554-7785 is a Gear,spur, manufactured by Navsurfwarcen Det Picatinny, classified under FSC 3020, Gears, Pulleys, Sprockets, and Transmission Chain. Status: active.
NSN 3020-00-554-7785 has 3 manufacturer part numbers on file: BUWEPSDWG1320461 (Bae Systems Land & Armaments L.p.), 1320461 (Navair and Navsea Managed Original Design Activity Dwg Not Material/parts Supplier), BUWEPSDWG1320461 (Navsurfwarcen Det Picatinny).
1 possible match (shared part number, not a government interchangeability claim): 5340-01-559-2887. Verify interchangeability with system specifications before substitution.
Key specifications for BUWEPSDWG1320461: Bore Nominal Diameter: 1.250 INCHES BOTH ENDS IN; Hub Nominal Diameter: 1.625 INCHES SECOND END IN; Teeth Quantity: 112; Second Step Nominal Diameter: 2.625 INCHES FIRST END IN. 30 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.