The Guard,mechanical Drive, cataloged under National Stock Number 3020-01-366-3885, 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 Lockheed Martin Corporation Div Rms. The record lists 2 manufacturer part numbers for this item, enabling identification through both NSN and commercial part number lookups. 3 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 3020-01-366-3885 |
| Primary Part Number | 1220C0814 |
| Item Name | Guard,mechanical Drive |
| FSC / FSG | 3020 / 30 — Gears, Pulleys, Sprockets, and Transmission Chain |
| Manufacturer | Lockheed Martin Corporation Div Rms |
| 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 |
|---|---|
| 1223E0080 ITEM 142 | Lockheed Martin Corporation Div Rms (USA) |
| 1220C0814 PRIMARY | Lockheed Martin Corporation Div Rms (USA) |
| Reference | Meaning |
|---|---|
| 1223E0080 | D/9 Drawing number reference only Martin Marietta Technologies Inc Sub of Martin Marietta Corp Aero and Naval Systems |
| 1223E0080 ITEM 142 | 5/9 Secondary reference Martin Marietta Technologies Inc Sub of Martin Marietta Corp Aero and Naval Systems |
| 1220C0814 | 5/9 Secondary reference Martin Marietta Technologies Inc Sub of Martin Marietta Corp Aero and Naval Systems |
NSN 3020-01-366-3885 is a Guard,mechanical Drive, manufactured by Lockheed Martin Corporation Div Rms, classified under FSC 3020, Gears, Pulleys, Sprockets, and Transmission Chain. Status: active.
NSN 3020-01-366-3885 has 2 manufacturer part numbers on file: 1223E0080 ITEM 142 (Lockheed Martin Corporation Div Rms), 1220C0814 (Lockheed Martin Corporation Div Rms).
Key specifications for 1220C0814: Special Features: MATL,NICKEL COPPER ALLOY;CYLINDRICAL SHAPE;4.620 IN. L,2.400 IN. BODY DIA;1ST END HAS A FLANGE W/ 3.620 IN. DIA,0.620 THK,3 0.281 IN. MTG HOLES ON 0.438 BCD;2ND END HAS A 0.500 IN. HOLE DRILLED THRU;BODY HAS A 2.000 IN. BY 1.000IN. SLOT CUT INTO IT;BODY I.D. IS 2.440 IN. IN; End Item Identification: CAPSTAN,MARTIN MARIETTA,MODEL -1. 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.