The Washer,flat, cataloged under National Stock Number 5310-01-481-7832, is classified within Federal Supply Class 5310 (Nuts and Washers) of the Hardware and Abrasives group. The manufacturer of record is Northrop Grumman Systems Corporation Div Marine Systems. Government technical data includes 7 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 | 5310-01-481-7832 |
| Primary Part Number | 2051F51 ITEM 129 |
| Item Name | Washer,flat |
| FSC / FSG | 5310 / 53 — Nuts and Washers |
| Manufacturer | Northrop Grumman Systems Corporation Div Marine Systems |
| Status | ACTIVE |
| Overall Diameter | 0.642 INCHES NOMINAL IN |
| Cross-Sectional Shape Style | RECTANGULAR |
| Peripheral Shape Style | ROUND |
| Material | STEEL CORROSION RESISTING OVERALL |
| Center Hole Shape Style | ROUND |
| Hole Diameter | 0.465 INCHES NOMINAL IN |
| Thickness | 0.015 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 |
|---|---|
| 2051F51 ITEM 129 PRIMARY | Northrop Grumman Systems Corporation Div Marine Systems (USA) |
| 300-2158-015 PRIMARY | Superior Washer & Gasket Corp. Dba Superior Washer & Gasket Corp (USA) |
NSN 5310-01-481-7832 is a Washer,flat, manufactured by Northrop Grumman Systems Corporation Div Marine Systems, classified under FSC 5310, Nuts and Washers. Status: active.
NSN 5310-01-481-7832 has 2 manufacturer part numbers on file: 2051F51 ITEM 129 (Northrop Grumman Systems Corporation Div Marine Systems), 300-2158-015 (Superior Washer & Gasket Corp. Dba Superior Washer & Gasket Corp).
Key specifications for 2051F51 ITEM 129: Overall Diameter: 0.642 INCHES NOMINAL IN; Cross-Sectional Shape Style: RECTANGULAR; Peripheral Shape Style: ROUND; Material: STEEL CORROSION RESISTING OVERALL. 7 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.