The Washer,flat, cataloged under National Stock Number 5310-01-443-9865, is classified within Federal Supply Class 5310 (Nuts and Washers) of the Hardware and Abrasives group. The manufacturer of record is Huntington Ingalls Inc Div Newport News Shipbuilding. 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 | 5310-01-443-9865 |
| Primary Part Number | 123-4403562 PART 61 |
| Item Name | Washer,flat |
| FSC / FSG | 5310 / 53 — Nuts and Washers |
| Manufacturer | Huntington Ingalls Inc Div Newport News Shipbuilding |
| Status | ACTIVE |
| Overall Diameter | 1.938 INCHES NOMINAL IN |
| Material Document and Classification | ASTM B21 ASSN STD SINGLE MATERIAL RESPONSE OVERALL |
| Cross-Sectional Shape Style | RECTANGULAR |
| Peripheral Shape Style | ROUND |
| Material | COPPER ALLOY 462 OVERALL |
| Center Hole Shape Style | ROUND |
| Hole Diameter | 0.781 INCHES NOMINAL IN |
| Thickness | 0.100 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 |
|---|---|
| 123-4403562 PART 61 PRIMARY | Huntington Ingalls Inc Div Newport News Shipbuilding (USA) |
| 123-4556118 PART 5 | Huntington Ingalls Inc Div Newport News Shipbuilding (USA) |
NSN 5310-01-443-9865 is a Washer,flat, manufactured by Huntington Ingalls Inc Div Newport News Shipbuilding, classified under FSC 5310, Nuts and Washers. Status: active.
NSN 5310-01-443-9865 has 2 manufacturer part numbers on file: 123-4403562 PART 61 (Huntington Ingalls Inc Div Newport News Shipbuilding), 123-4556118 PART 5 (Huntington Ingalls Inc Div Newport News Shipbuilding).
Key specifications for 123-4403562 PART 61: Overall Diameter: 1.938 INCHES NOMINAL IN; Material Document and Classification: ASTM B21 ASSN STD SINGLE MATERIAL RESPONSE OVERALL; 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.