The Washer,flat, cataloged under National Stock Number 5310-01-228-8928, is classified within Federal Supply Class 5310 (Nuts and Washers) of the Hardware and Abrasives group. The manufacturer of record is Parker-Hannifin Corporation Div Gas Turbine Fuel Systems. Government technical data includes 12 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. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5310-01-228-8928 |
| Primary Part Number | 6771178-3 |
| Item Name | Washer,flat |
| FSC / FSG | 5310 / 53 — Nuts and Washers |
| Manufacturer | Parker-Hannifin Corporation Div Gas Turbine Fuel Systems |
| Status | ACTIVE |
| Outside Left Corner Chamfer Angle | 45.0 DEGREES NOMINAL |
| Overall Diameter | 0.311 INCHES NOMINAL IN |
| Inside Right Corner Chamfer Angle | 45.0 DEGREES NOMINAL |
| Material Document and Classification | AMS5754 ASSN STD 1ST MATERIAL RESPONSE OR AMS5536 ASSN STD 2ND MATERIAL RESPONSE OVERALL |
| Cross-Sectional Shape Style | RECTANGULAR |
| Inside Left Corner Chamfer Angle | 45.0 DEGREES NOMINAL |
| Outside Right Corner Chamfer Angle | 45.0 DEGREES NOMINAL |
| Peripheral Shape Style | ROUND |
| Material | STEEL CORROSION RESISTING OVERALL |
| Center Hole Shape Style | ROUND |
| Hole Diameter | 0.219 INCHES NOMINAL IN |
| Thickness | 0.047 INCHES NOMINAL 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 |
|---|---|
| 6771178-3 PRIMARY | Parker-Hannifin Corporation Div Gas Turbine Fuel Systems (USA) |
NSN 5310-01-228-8928 is a Washer,flat, manufactured by Parker-Hannifin Corporation Div Gas Turbine Fuel Systems, classified under FSC 5310, Nuts and Washers. Status: active.
NSN 5310-01-228-8928 has 1 manufacturer part number on file: 6771178-3 (Parker-Hannifin Corporation Div Gas Turbine Fuel Systems).
Key specifications for 6771178-3: Outside Left Corner Chamfer Angle: 45.0 DEGREES NOMINAL; Overall Diameter: 0.311 INCHES NOMINAL IN; Inside Right Corner Chamfer Angle: 45.0 DEGREES NOMINAL; Material Document and Classification: AMS5754 ASSN STD 1ST MATERIAL RESPONSE OR AMS5536 ASSN STD 2ND MATERIAL RESPONSE OVERALL. 12 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.