The Washer,flat, cataloged under National Stock Number 5310-01-003-8200, is classified within Federal Supply Class 5310 (Nuts and Washers) of the Hardware and Abrasives group. The manufacturer of record is General Electric Supply Co Div of General Electric Co. Government technical data includes 8 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through both NSN and commercial part number lookups. 3 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5310-01-003-8200 |
| Primary Part Number | N400P9 |
| Item Name | Washer,flat |
| FSC / FSG | 5310 / 53 — Nuts and Washers |
| Manufacturer | General Electric Supply Co Div of General Electric Co |
| Status | ACTIVE |
| Overall Diameter | 0.401 INCHES MINIMUM AND 0.411 INCHES MAXIMUM IN |
| Cross-Sectional Shape Style | RECTANGULAR |
| Surface Treatment | PASSIVATE OVERALL |
| Peripheral Shape Style | ROUND |
| Material | STEEL CORROSION RESISTING OVERALL |
| Center Hole Shape Style | ROUND |
| Hole Diameter | 0.198 INCHES MINIMUM AND 0.208 INCHES MAXIMUM IN |
| Thickness | 0.036 INCHES MINIMUM AND 0.045 INCHES MAXIMUM 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 |
|---|---|
| N400P9 | General Electric Supply Co Div of General Electric Co (USA) |
| Reference | Meaning |
|---|---|
| N400P9 | 3/9 Design control — primary reference General Electric Co Materials Information Services |
| NTAHB09000 | 5/9 Secondary reference General Electric Co Instrument Products Section |
| N400P9 | 5/9 Secondary reference General Electric Co Instrument Products Section |
NSN 5310-01-003-8200 is a Washer,flat, manufactured by General Electric Supply Co Div of General Electric Co, classified under FSC 5310, Nuts and Washers. Status: active.
NSN 5310-01-003-8200 has 1 manufacturer part number on file: N400P9 (General Electric Supply Co Div of General Electric Co).
Key specifications for N400P9: Overall Diameter: 0.401 INCHES MINIMUM AND 0.411 INCHES MAXIMUM IN; Cross-Sectional Shape Style: RECTANGULAR; Surface Treatment: PASSIVATE OVERALL; Peripheral Shape Style: ROUND. 8 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.