The Gear,spur, cataloged under National Stock Number 3020-00-332-4780, 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 Mhd-Rockland Inc. Dba Mhd-Rockland Inc. Government technical data includes 26 specifications, cited from the U.S. Government catalog. The record lists 1 manufacturer part number 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through both NSN and commercial part number lookups. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 1 item shares a part number with this NSN in the catalog (possible match — not a government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 | 3020-00-332-4780 |
| Primary Part Number | 607628 |
| Item Name | Gear,spur |
| FSC / FSG | 3020 / 30 — Gears, Pulleys, Sprockets, and Transmission Chain |
| Manufacturer | Mhd-Rockland Inc. Dba Mhd-Rockland Inc |
| Status | ACTIVE |
| Bore Nominal Diameter | 3.875 INCHES FIRST END IN |
| Teeth Quantity | 360 |
| Second Step Nominal Diameter | 5.312 INCHES FIRST END IN |
| Body Style | PLAIN, SOLID |
| Counterbore Nominal Diameter | 5.531 INCHES SECOND END IN |
| Bore Style | W/COUNTERBORE BOTH ENDS |
| Mounting Hole Type and Quantity | 6 COUNTERSUNK AXIALLY THROUGH BODY FIRST END |
| Nominal Distance Between Body Face and Protruding Hub End | 0.505 INCHES FIRST END IN |
| First Step Nominal Length | 0.088 INCHES FIRST END IN |
| Mounting Hole Nominal Diameter | 0.166 INCHES AXIALLY THROUGH BODY FIRST END IN |
| Nominal Overall Length | 0.661 INCHES IN |
| Second Step Nominal Length | 0.124 INCHES FIRST END IN |
| Style Designator | PROTRUDING HUB |
| Material Document and Classification | QQ-A-268 FED SPEC SINGLE MATERIAL RESPONSE OVERALL |
| Pitch Diameter | 5.6250 INCHES NOMINAL IN |
| Tooth Form | STANDARD |
| First Step Nominal Diameter | 4.375 INCHES FIRST END IN |
| Hub Style Designator | 2 STEPS FIRST END |
| End Nominal Length | 0.193 INCHES FIRST END IN |
| Nominal Outside Diameter | 5.656 INCHES IN |
| End Nominal Diameter | 4.499 INCHES FIRST END IN |
| Pressure Angle | 14.5000 DEGREES |
| Material | ALUMINUM ALLOY OVERALL |
| Counterbore Nominal Depth | 0.380 INCHES SECOND END IN |
| Attachment Method | MOUNTING HOLE |
| Face Nominal Width | 0.156 INCHES IN |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL Q — CCL Item — Commerce Control List |
| Hazard | No hazard code in the DLA record (HMIC N) |
| Criticality Code | X |
| Part Number | Manufacturer |
|---|---|
| 607628 PRIMARY | Mhd-Rockland Inc. Dba Mhd-Rockland Inc (USA) |
| Reference | Meaning |
|---|---|
| 607628 | 3/9 Design control — primary reference Northrop Grumman Systems Corporation |
| 607628 | 5/9 Secondary reference Lockheed Martin Corporation Div Rms - Mitchel Field |
NSN 3020-00-332-4780 is a Gear,spur, manufactured by Mhd-Rockland Inc. Dba Mhd-Rockland Inc, classified under FSC 3020, Gears, Pulleys, Sprockets, and Transmission Chain. Status: active.
NSN 3020-00-332-4780 has 1 manufacturer part number on file: 607628 (Mhd-Rockland Inc. Dba Mhd-Rockland Inc).
1 possible match (shared part number, not a government interchangeability claim): 6615-00-874-3042. Verify interchangeability with system specifications before substitution.
Key specifications for 607628: Bore Nominal Diameter: 3.875 INCHES FIRST END IN; Teeth Quantity: 360; Second Step Nominal Diameter: 5.312 INCHES FIRST END IN; Body Style: PLAIN, SOLID. 26 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.
NSN 3020-00-332-4780 has DEMIL Code Q. Demilitarization may be required before disposal or transfer to non-military entities.
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.