The Guard,mechanical Drive, cataloged under National Stock Number 3020-01-633-7345, 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 Traina Mechanical Inc. The record lists 1 manufacturer part number 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog.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.
| Item Name | Guard,mechanical Drive |
| FSC / FSG | 3020 — Gears, Pulleys, Sprockets, and Transmission Chain (FSG 30) |
| Manufacturers | Traina Mechanical Inc (CAGE 0B1R9) |
| Parameter | Value |
|---|---|
| NSN | 3020-01-633-7345 |
| Primary Part Number | TR-GRDEXT1 |
| Item Name | Guard,mechanical Drive |
| FSC / FSG | 3020 / 30 — Gears, Pulleys, Sprockets, and Transmission Chain |
| Manufacturer | Traina Mechanical Inc |
| Status | ACTIVE |
| 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 |
|---|---|
| TR-GRDEXT1 PRIMARY | Traina Mechanical Inc (USA) |
| Reference | Meaning |
|---|---|
| 5108361 | D/9 Drawing number reference only Naval Sea Systems Command |
NSN 3020-01-633-7345 is a Guard,mechanical Drive, manufactured by Traina Mechanical Inc, classified under FSC 3020, Gears, Pulleys, Sprockets, and Transmission Chain. Status: active.
NSN 3020-01-633-7345 has 1 manufacturer part number on file: TR-GRDEXT1 (Traina Mechanical Inc).
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.