The Washer,flat, cataloged under National Stock Number 5310-01-292-5356, is classified within Federal Supply Class 5310 (Nuts and Washers) of the Hardware and Abrasives group. The manufacturer of record is Naval Sea Systems Command. Government technical data includes 8 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5310-01-292-5356 |
| Primary Part Number | 5598611-1 |
| Item Name | Washer,flat |
| FSC / FSG | 5310 / 53 — Nuts and Washers |
| Manufacturer | Naval Sea Systems Command |
| Status | ACTIVE |
| Overall Diameter | 1.500 INCHES MINIMUM AND 1.560 INCHES MAXIMUM IN |
| Material Document and Classification | ASTM B16,1/2HARD ASSN STD SINGLE MATERIAL RESPONSE OVERALL |
| Cross-Sectional Shape Style | RECTANGULAR |
| Peripheral Shape Style | ROUND |
| Material | COPPER ALLOY 360 OVERALL |
| Center Hole Shape Style | ROUND |
| Hole Diameter | 1.010 INCHES MINIMUM AND 1.060 INCHES MAXIMUM IN |
| Thickness | 0.053 INCHES MINIMUM AND 0.061 INCHES MAXIMUM 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 |
|---|---|
| 5598611-1 PRIMARY | Naval Sea Systems Command (USA) |
| Reference | Meaning |
|---|---|
| 5598611-1 | 5/9 Secondary reference Warner Aircraft Engineering Dba Aircraft Engineering Corporati |
NSN 5310-01-292-5356 is a Washer,flat, manufactured by Naval Sea Systems Command, classified under FSC 5310, Nuts and Washers. Status: active.
NSN 5310-01-292-5356 has 1 manufacturer part number on file: 5598611-1 (Naval Sea Systems Command).
Key specifications for 5598611-1: Overall Diameter: 1.500 INCHES MINIMUM AND 1.560 INCHES MAXIMUM IN; Material Document and Classification: ASTM B16,1/2HARD 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.