The Washer,flat, cataloged under National Stock Number 5310-01-413-0758, is classified within Federal Supply Class 5310 (Nuts and Washers) of the Hardware and Abrasives group. The manufacturer of record is Boeing Distribution Services X, Inc.. Government technical data includes 8 specifications, cited from the U.S. Government catalog. The record lists 2 manufacturer part numbers for this item, enabling identification through both NSN and commercial part number lookups. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5310-01-413-0758 |
| Primary Part Number | 663963 |
| Item Name | Washer,flat |
| FSC / FSG | 5310 / 53 — Nuts and Washers |
| Manufacturer | Boeing Distribution Services X, Inc. |
| Status | ACTIVE |
| Outside Left Corner Chamfer Angle | 28.0 DEGREES MINIMUM AND 32.0 DEGREES MAXIMUM |
| Overall Diameter | 0.420 INCHES MINIMUM AND 0.440 INCHES MAXIMUM IN |
| Cross-Sectional Shape Style | RECTANGULAR |
| Peripheral Shape Style | ROUND |
| Material | STEEL CORROSION RESISTING OVERALL |
| Center Hole Shape Style | ROUND |
| Hole Diameter | 0.200 INCHES MINIMUM AND 0.205 INCHES MAXIMUM IN |
| Thickness | 0.130 INCHES MINIMUM AND 0.150 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 |
NSN 5310-01-413-0758 is a Washer,flat, manufactured by Boeing Distribution Services X, Inc., classified under FSC 5310, Nuts and Washers. Status: active.
NSN 5310-01-413-0758 has 2 manufacturer part numbers on file: 663963 (Honeywell International Inc. Dba Honeywell International Div Aerospace - Tempe (west Warner Road)), 663963 (Boeing Distribution Services X, Inc.).
Key specifications for 663963: Outside Left Corner Chamfer Angle: 28.0 DEGREES MINIMUM AND 32.0 DEGREES MAXIMUM; Overall Diameter: 0.420 INCHES MINIMUM AND 0.440 INCHES MAXIMUM IN; Cross-Sectional Shape Style: RECTANGULAR; 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.