The Washer,flat, cataloged under National Stock Number 5310-00-006-2363, is classified within Federal Supply Class 5310 (Nuts and Washers) of the Hardware and Abrasives group. The manufacturer of record is Western Gasket and Packing Co. Government technical data includes 7 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through both NSN and commercial part number lookups. 4 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5310-00-006-2363 |
| Primary Part Number | 993301-206 |
| Item Name | Washer,flat |
| FSC / FSG | 5310 / 53 — Nuts and Washers |
| Manufacturer | Western Gasket and Packing Co |
| Status | ACTIVE |
| Overall Diameter | 0.319 INCHES MINIMUM AND 0.339 INCHES MAXIMUM IN |
| Cross-Sectional Shape Style | RECTANGULAR |
| Peripheral Shape Style | ROUND |
| Material | STEEL CORROSION RESISTING OVERALL |
| Center Hole Shape Style | ROUND |
| Hole Diameter | 0.080 INCHES MINIMUM AND 0.091 INCHES MAXIMUM IN |
| Thickness | 0.032 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 |
|---|---|
| 993301-206 | Western Gasket and Packing Co (USA) |
| Reference | Meaning |
|---|---|
| B701-206 | 5/9 Secondary reference Master Washer and Stamping Co |
| PCW32-206 | 5/9 Secondary reference National Tool and Die Corp |
| H301-206 | 5/9 Secondary reference Western Gasket and Packing Co |
| 993301-206 | 3/2 Design control — primary reference U.S. Government activity |
NSN 5310-00-006-2363 is a Washer,flat, manufactured by Western Gasket and Packing Co, classified under FSC 5310, Nuts and Washers. Status: active.
NSN 5310-00-006-2363 has 1 manufacturer part number on file: 993301-206 (Western Gasket and Packing Co).
Key specifications for 993301-206: Overall Diameter: 0.319 INCHES MINIMUM AND 0.339 INCHES MAXIMUM IN; Cross-Sectional Shape Style: RECTANGULAR; Peripheral Shape Style: ROUND; Part Name Assigned by Controlling Agency: NAVY SPECIAL PROJECT. 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.