The Gear,spur, cataloged under National Stock Number 3020-00-618-6632, 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 General Dynamics Mission Systems, Inc. Dba Gdms. Government technical data includes 16 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through both NSN and commercial part number lookups. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 3020-00-618-6632 |
| Primary Part Number | 344B4428 |
| Item Name | Gear,spur |
| FSC / FSG | 3020 / 30 — Gears, Pulleys, Sprockets, and Transmission Chain |
| Manufacturer | General Dynamics Mission Systems, Inc. Dba Gdms |
| Status | ACTIVE |
| Bore Nominal Diameter | 0.313 INCHES BOTH ENDS IN |
| Backlash Designation | GRADE B |
| Teeth Quantity | 68 |
| Surface Treatment Document and Classification | MIL-F-14072,FINISH E300 MIL SPEC SINGLE TREATMENT RESPONSE OVERALL |
| Body Style | PLAIN, SOLID |
| Bore Style | PLAIN BOTH ENDS |
| Precision Classification | QUALITY NUMBER 7 |
| Style Designator | HUBLESS |
| Material Document and Classification | MIL-S-5059,ANNEALED MIL SPEC SINGLE MATERIAL RESPONSE OVERALL |
| Pitch Diameter | 2.1250 INCHES NOMINAL IN |
| Tooth Form | STANDARD |
| Nominal Outside Diameter | 2.188 INCHES IN |
| Surface Treatment | PASSIVATE OVERALL |
| Pressure Angle | 20.0000 DEGREES |
| Material | STEEL COMP 302 OVERALL |
| Face Nominal Width | 0.039 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 |
|---|---|
| 344B4428 PRIMARY | General Dynamics Mission Systems, Inc. Dba Gdms (USA) |
| Reference | Meaning |
|---|---|
| 344B4428 | 5/9 Secondary reference U.S. Government activity |
| SMB248902 | 5/2 Secondary reference U.S. Government activity |
NSN 3020-00-618-6632 is a Gear,spur, manufactured by General Dynamics Mission Systems, Inc. Dba Gdms, classified under FSC 3020, Gears, Pulleys, Sprockets, and Transmission Chain. Status: active.
NSN 3020-00-618-6632 has 1 manufacturer part number on file: 344B4428 (General Dynamics Mission Systems, Inc. Dba Gdms).
Key specifications for 344B4428: Bore Nominal Diameter: 0.313 INCHES BOTH ENDS IN; Backlash Designation: GRADE B; Teeth Quantity: 68; Surface Treatment Document and Classification: MIL-F-14072,FINISH E300 MIL SPEC SINGLE TREATMENT RESPONSE OVERALL. 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.