The Washer,flat, cataloged under National Stock Number 5310-00-889-2539, 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 10 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through both NSN and commercial part number lookups. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5310-00-889-2539 |
| Primary Part Number | 122-5343921 PC35 |
| Item Name | Washer,flat |
| FSC / FSG | 5310 / 53 — Nuts and Washers |
| Manufacturer | Huntington Ingalls Inc Div Newport News Shipbuilding |
| Status | ACTIVE |
| Overall Diameter | 0.688 INCHES NOMINAL IN |
| Material Document and Classification | QQ-N-281 FED SPEC SINGLE MATERIAL RESPONSE OVERALL |
| Cross-Sectional Shape Style | RECTANGULAR |
| Departure From Cited Designator | AS MODIFIED BY ID AND AS MODIFIED BY OD |
| Nondefinitive Spec/std Data | A TYPE AND 1 GRADE AND G CLASS |
| Peripheral Shape Style | ROUND |
| Material | NICKEL ALLOY A OVERALL |
| Center Hole Shape Style | ROUND |
| Hole Diameter | 0.260 INCHES NOMINAL IN |
| Thickness | 0.050 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 |
|---|---|
| 122-5343921 PC35 PRIMARY | Huntington Ingalls Inc Div Newport News Shipbuilding (USA) |
| Reference | Meaning |
|---|---|
| 5486620-0022PC2 | C/1 Advisory reference — outside the item-of-supply concept Huntington Ingalls Inc Div Newport News Shipbuilding |
| FFW92TYPEAGRADE1CLASSG | 4/1 Identification reference U.S. Government activity |
NSN 5310-00-889-2539 is a Washer,flat, manufactured by Huntington Ingalls Inc Div Newport News Shipbuilding, classified under FSC 5310, Nuts and Washers. Status: active.
NSN 5310-00-889-2539 has 1 manufacturer part number on file: 122-5343921 PC35 (Huntington Ingalls Inc Div Newport News Shipbuilding).
Key specifications for 122-5343921 PC35: Overall Diameter: 0.688 INCHES NOMINAL IN; Material Document and Classification: QQ-N-281 FED SPEC SINGLE MATERIAL RESPONSE OVERALL; Cross-Sectional Shape Style: RECTANGULAR; Departure From Cited Designator: AS MODIFIED BY ID AND AS MODIFIED BY OD. 10 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.