The Washer,flat, cataloged under National Stock Number 5310-00-641-8247, is classified within Federal Supply Class 5310 (Nuts and Washers) of the Hardware and Abrasives group. The manufacturer of record is Horizon Aerospace Llc Dba Magnetics Division. 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. 2 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 | 5310-00-641-8247 |
| Primary Part Number | 21-1675 |
| Item Name | Washer,flat |
| FSC / FSG | 5310 / 53 — Nuts and Washers |
| Manufacturer | Horizon Aerospace Llc Dba Magnetics Division |
| Status | ACTIVE |
| Overall Diameter | 0.188 INCHES MINIMUM AND 0.192 INCHES MAXIMUM IN |
| Cross-Sectional Shape Style | RECTANGULAR |
| Peripheral Shape Style | ROUND |
| Material | CELLULOSE OVERALL |
| Center Hole Shape Style | ROUND |
| Hole Diameter | 0.089 INCHES MINIMUM AND 0.091 INCHES MAXIMUM IN |
| Thickness | 0.008 INCHES MINIMUM AND 0.010 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 |
|---|---|
| 21-1675 PRIMARY | Horizon Aerospace Llc Dba Magnetics Division (USA) |
NSN 5310-00-641-8247 is a Washer,flat, manufactured by Horizon Aerospace Llc Dba Magnetics Division, classified under FSC 5310, Nuts and Washers. Status: active.
NSN 5310-00-641-8247 has 1 manufacturer part number on file: 21-1675 (Horizon Aerospace Llc Dba Magnetics Division).
2 possible matches (shared part number, not a government interchangeability claim): 5910-01-243-8171, 5360-01-468-7675. Verify interchangeability with system specifications before substitution.
Key specifications for 21-1675: Overall Diameter: 0.188 INCHES MINIMUM AND 0.192 INCHES MAXIMUM IN; Cross-Sectional Shape Style: RECTANGULAR; Peripheral Shape Style: ROUND; Material: CELLULOSE 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.