The Washer,flat, cataloged under National Stock Number 5310-01-474-8822, 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 9 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through both NSN and commercial part number lookups. 4 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 3 items share a part number with this NSN in the catalog (possible match — not a government interchangeability claim). Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5310-01-474-8822 |
| Primary Part Number | 845-7285244 ITEM 56 |
| Item Name | Washer,flat |
| FSC / FSG | 5310 / 53 — Nuts and Washers |
| Manufacturer | Naval Sea Systems Command |
| Status | ACTIVE |
| Surface Finish | 63.0 MICROINCHES ALL SURFACES |
| Overall Diameter | 0.869 INCHES MINIMUM AND 0.874 INCHES MAXIMUM IN |
| Material Document and Classification | AF FIBER,RESIN DE 588 MFR REF SINGLE MATERIAL RESPONSE OVERALL |
| Cross-Sectional Shape Style | RECTANGULAR |
| Peripheral Shape Style | ROUND |
| Material | PLASTIC ACETAL OVERALL |
| Center Hole Shape Style | ROUND |
| Hole Diameter | 0.625 INCHES MINIMUM AND 0.629 INCHES MAXIMUM IN |
| Thickness | 0.060 INCHES MINIMUM AND 0.063 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 |
|---|---|
| 845-7285244 ITEM 56 PRIMARY | Naval Sea Systems Command (USA) |
| Reference | Meaning |
|---|---|
| 2643-405-01 ITEM 56 | 5/2 Secondary reference U.S. Government activity |
| 7285244 | D/9 Drawing number reference only Naval Sea Systems Command |
| 2641-809-40 | D/9 Drawing number reference only U.S. Government activity |
| 2641-809-40 ITEM 56 | 5/2 Secondary reference U.S. Government activity |
NSN 5310-01-474-8822 is a Washer,flat, manufactured by Naval Sea Systems Command, classified under FSC 5310, Nuts and Washers. Status: active.
NSN 5310-01-474-8822 has 1 manufacturer part number on file: 845-7285244 ITEM 56 (Naval Sea Systems Command).
3 possible matches (shared part number, not a government interchangeability claim): 5310-01-474-8828, 4820-01-482-5054, 5310-01-548-5582. Verify interchangeability with system specifications before substitution.
Key specifications for 845-7285244 ITEM 56: Surface Finish: 63.0 MICROINCHES ALL SURFACES; Overall Diameter: 0.869 INCHES MINIMUM AND 0.874 INCHES MAXIMUM IN; Material Document and Classification: AF FIBER,RESIN DE 588 MFR REF SINGLE MATERIAL RESPONSE OVERALL; Cross-Sectional Shape Style: RECTANGULAR. 9 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.