The Washer,flat, cataloged under National Stock Number 5310-00-559-6973, is classified within Federal Supply Class 5310 (Nuts and Washers) of the Hardware and Abrasives group. The manufacturer of record is Jewell Instruments Llc. 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. 1 item shares a part number with this NSN in the catalog (possible match — not a government interchangeability claim). Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5310-00-559-6973 |
| Primary Part Number | 20825086-001 |
| Item Name | Washer,flat |
| FSC / FSG | 5310 / 53 — Nuts and Washers |
| Manufacturer | Jewell Instruments Llc |
| Status | ACTIVE |
| Overall Diameter | 0.219 INCHES NOMINAL IN |
| Cross-Sectional Shape Style | RECTANGULAR |
| Peripheral Shape Style | ROUND |
| Material | WOOL OR COTTON OR CELLULOSE OR GLASS OVERALL |
| Center Hole Shape Style | ROUND |
| Hole Diameter | 0.156 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 |
|---|---|
| 20825086-001 PRIMARY | Jewell Instruments Llc (USA) |
| 1W042-1 | Jewell Instruments Llc (USA) |
| Reference | Meaning |
|---|---|
| 825086-001 | 5/9 Secondary reference Jewell Instruments Llc |
NSN 5310-00-559-6973 is a Washer,flat, manufactured by Jewell Instruments Llc, classified under FSC 5310, Nuts and Washers. Status: active.
NSN 5310-00-559-6973 has 2 manufacturer part numbers on file: 20825086-001 (Jewell Instruments Llc), 1W042-1 (Jewell Instruments Llc).
1 possible match (shared part number, not a government interchangeability claim): 3120-01-546-2781. Verify interchangeability with system specifications before substitution.
Key specifications for 20825086-001: Overall Diameter: 0.219 INCHES NOMINAL IN; Cross-Sectional Shape Style: RECTANGULAR; Peripheral Shape Style: ROUND; Material: WOOL OR COTTON OR CELLULOSE OR GLASS 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.