The Guard,mechanical Drive, cataloged under National Stock Number 3020-01-111-1452, 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 Diamond Power International, Inc.. The record lists 2 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. 1 item shares a part number with this NSN in the catalog (possible match — not a government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 | 3020-01-111-1452 |
| Primary Part Number | 312820-1047 PIECE 30 |
| Item Name | Guard,mechanical Drive |
| FSC / FSG | 3020 / 30 — Gears, Pulleys, Sprockets, and Transmission Chain |
| Manufacturer | Diamond Power International, 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 |
|---|---|
| 312820-1047 PIECE 30 PRIMARY | Diamond Power International, Inc. (USA) |
| 302103-1038 PRIMARY | Diamond Power International, Inc. (USA) |
| Reference | Meaning |
|---|---|
| 312820-1047 | D/9 Drawing number reference only Diamond Power International, Inc. |
NSN 3020-01-111-1452 is a Guard,mechanical Drive, manufactured by Diamond Power International, Inc., classified under FSC 3020, Gears, Pulleys, Sprockets, and Transmission Chain. Status: active.
NSN 3020-01-111-1452 has 2 manufacturer part numbers on file: 312820-1047 PIECE 30 (Diamond Power International, Inc.), 302103-1038 (Diamond Power International, Inc.).
1 possible match (shared part number, not a government interchangeability claim): 3020-01-111-1796. Verify interchangeability with system specifications before substitution.
Key specifications for 312820-1047 PIECE 30: Special Features: CONSISTS OF P/N 301717-1137 GEAR GUARD RH;P/N301717-2135 GEAR GUARD LH;P/N301716-0114 SPACER BLOCK;P/N869006-2500 1/4 PLAIN WASHER;P/N865002-2536 1/4-20 UNC 2A 1 1/2 FILL HD SCR;P/N865002-2628 1/4-20 UNC 2A 7/8 FILL HD SCR;P/N863015-2500 1/4-20 UNC 2B HEX NUT A. 0 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.