The Plate Assy,bottom, cataloged under National Stock Number 1680-01-087-2856, is classified within Federal Supply Class 1680 (Miscellaneous Aircraft Accessories and Components) of the Aircraft Components and Accessories group. The manufacturer of record is Leonardo S.p.a. Div Electronics. Government technical data includes 1 specification, 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through both NSN and commercial part number lookups. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog.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 | 1680-01-087-2856 |
| Primary Part Number | 311504-1 |
| Item Name | Plate Assy,bottom |
| FSC / FSG | 1680 / 16 — Miscellaneous Aircraft Accessories and Components |
| Manufacturer | Leonardo S.p.a. Div Electronics |
| Status | ACTIVE |
| General Characteristics Item Description | 0.062 IN. THK; PLASTIC TYPE GEE MIL-P-18177; 1 NUT ANCHOR; 2 RIVETS; 5.710 IN. LONG; 2.910 IN. WIDE; 4 HOLES 0.166 IN. DIA 100 DEG CSK BY 0.280 IN. DIA FAR SIDE; 0.140 IN. DIA 82 DEG CSK BY 0.230 IN. DIA FAR SIDE 4 HOLES; 0.098 IN. DIA 100 DEG CSK BY 0.180 IN. DIA FAR SIDE 2 HOLES; 0.120 RADIUS OF CORNER OF FLANGE; 1.980 IN. DISTANCE BETWEEN HOLES ON LG; 1.500 IN. DISTANCE BETWEEN HOLES ON WIDTH IN |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL B — Remove Demilitarization Key Points |
| Hazard | No hazard code in the DLA record (HMIC N) |
| Criticality Code | X |
| Part Number | Manufacturer |
|---|---|
| 311504-1 | Leonardo S.p.a. Div Electronics (ITA) |
| Reference | Meaning |
|---|---|
| 311504-1 | 3/2 Design control — primary reference U.S. Government activity |
| 311504-1 | 5/9 Secondary reference Fiar Fabbrica Italiana Apparecchiature Radioelettriche Spa |
NSN 1680-01-087-2856 is a Plate Assy,bottom, manufactured by Leonardo S.p.a. Div Electronics, classified under FSC 1680, Miscellaneous Aircraft Accessories and Components. Status: active.
NSN 1680-01-087-2856 has 1 manufacturer part number on file: 311504-1 (Leonardo S.p.a. Div Electronics).
Key specifications for 311504-1: General Characteristics Item Description: 0.062 IN. THK; PLASTIC TYPE GEE MIL-P-18177; 1 NUT ANCHOR; 2 RIVETS; 5.710 IN. LONG; 2.910 IN. WIDE; 4 HOLES 0.166 IN. DIA 100 DEG CSK BY 0.280 IN. DIA FAR SIDE; 0.140 IN. DIA 82 DEG CSK BY 0.230 IN. DIA FAR SIDE 4 HOLES; 0.098 IN. DIA 100 DEG CSK BY 0.180 IN. DIA FAR SIDE 2 HOLES; 0.120 RADIUS OF CORNER OF FLANGE; 1.980 IN. DISTANCE BETWEEN HOLES ON LG; 1.500 IN. DISTANCE BETWEEN HOLES ON WIDTH IN. 1 specification is 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 1680-01-087-2856 has DEMIL Code B. 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.