The Washer,flat, cataloged under National Stock Number 5310-01-376-5303, is classified within Federal Supply Class 5310 (Nuts and Washers) of the Hardware and Abrasives group. The manufacturer of record is The Boeing Company Div Defense. Government technical data includes 9 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5310-01-376-5303 |
| Primary Part Number | 584-702020-1 |
| Item Name | Washer,flat |
| FSC / FSG | 5310 / 53 — Nuts and Washers |
| Manufacturer | The Boeing Company Div Defense |
| Status | ACTIVE |
| Overall Diameter | 0.406 INCHES NOMINAL IN |
| Material Document and Classification | L-P-410A FED SPEC SINGLE MATERIAL RESPONSE OVERALL A |
| Cross-Sectional Shape Style | RECTANGULAR |
| Color | NATURAL OVERALL |
| Peripheral Shape Style | ROUND |
| Material | PLASTIC POLYHEXAMETHYLENE ADIPAMIDE OVERALL |
| Center Hole Shape Style | ROUND |
| Hole Diameter | 0.203 INCHES NOMINAL IN |
| Thickness | 0.090 INCHES MINIMUM AND 0.096 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 |
|---|---|
| 584-702020-1 PRIMARY | The Boeing Company Div Defense (USA) |
| Reference | Meaning |
|---|---|
| 584-702020-1 | 3/9 Design control — primary reference Mcdonnell Douglas Corp Mcdonnell Douglas Aerospace Opns West |
NSN 5310-01-376-5303 is a Washer,flat, manufactured by The Boeing Company Div Defense, classified under FSC 5310, Nuts and Washers. Status: active.
NSN 5310-01-376-5303 has 1 manufacturer part number on file: 584-702020-1 (The Boeing Company Div Defense).
Key specifications for 584-702020-1: Overall Diameter: 0.406 INCHES NOMINAL IN; Material Document and Classification: L-P-410A FED SPEC SINGLE MATERIAL RESPONSE OVERALL A; Cross-Sectional Shape Style: RECTANGULAR; Color: NATURAL OVERALL. 9 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.