The Washer,flat, cataloged under National Stock Number 5310-01-591-3128, is classified within Federal Supply Class 5310 (Nuts and Washers) of the Hardware and Abrasives group. The manufacturer of record is Defense Logistics Agency Dba Defense Supply Center Philadelphia. Government technical data includes 8 specifications, cited from the U.S. Government catalog. The record lists 3 manufacturer part numbers for this item, enabling identification through both NSN and commercial part number lookups. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5310-01-591-3128 |
| Primary Part Number | 03364-05 |
| Item Name | Washer,flat |
| FSC / FSG | 5310 / 53 — Nuts and Washers |
| Manufacturer | Defense Logistics Agency Dba Defense Supply Center Philadelphia |
| Status | ACTIVE |
| Overall Diameter | 24.0 MILLIMETERS NOMINAL MM |
| Hardness Rating | 52.0 ROCKWELL B MINIMUM |
| Cross-Sectional Shape Style | RECTANGULAR |
| Peripheral Shape Style | ROUND |
| Material | STEEL CORROSION RESISTING OVERALL |
| Center Hole Shape Style | ROUND |
| Hole Diameter | 8.4 MILLIMETERS NOMINAL MM |
| Thickness | 1.8 MILLIMETERS MINIMUM AND 2.2 MILLIMETERS MAXIMUM MM |
| 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 |
|---|---|
| 91116A160 | Mcmaster-Carr Supply Co (USA) |
| GD01010883 | General Dynamics United Kingdom Ltd (GBR) |
| 03364-05 PRIMARY | Defense Logistics Agency Dba Defense Supply Center Philadelphia (USA) |
NSN 5310-01-591-3128 is a Washer,flat, manufactured by Defense Logistics Agency Dba Defense Supply Center Philadelphia, classified under FSC 5310, Nuts and Washers. Status: active.
NSN 5310-01-591-3128 has 3 manufacturer part numbers on file: 91116A160 (Mcmaster-Carr Supply Co), GD01010883 (General Dynamics United Kingdom Ltd), 03364-05 (Defense Logistics Agency Dba Defense Supply Center Philadelphia).
Key specifications for 03364-05: Overall Diameter: 24.0 MILLIMETERS NOMINAL MM; Hardness Rating: 52.0 ROCKWELL B MINIMUM; 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.