The Washer,keyway, cataloged under National Stock Number 5310-01-121-8291, is classified within Federal Supply Class 5310 (Nuts and Washers) of the Hardware and Abrasives group. The manufacturer of record is Eaton Aerospace, Llc Dba Jackson South. 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 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 | 5310-01-121-8291 |
| Primary Part Number | 201397 |
| Item Name | Washer,keyway |
| FSC / FSG | 5310 / 53 — Nuts and Washers |
| Manufacturer | Eaton Aerospace, Llc Dba Jackson South |
| Status | ACTIVE |
| External Keyway Width | 0.250 INCHES NOMINAL IN |
| Material Document and Classification | 100 FSCM 62938 MFR REF SINGLE MATERIAL RESPONSE OVERALL |
| Outside Diameter | 1.750 INCHES NOMINAL IN |
| Material Thickness | 0.438 INCHES NOMINAL IN |
| Material | STEEL OVERALL |
| Hole Diameter | 1.188 INCHES NOMINAL IN |
| External Keyway Length | 0.101 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 |
|---|---|
| 823669 PIECE 62 | Eaton Aerospace, Llc Dba Jackson South (USA) |
| 201397 PRIMARY | Eaton Aerospace, Llc Dba Jackson South (USA) |
NSN 5310-01-121-8291 is a Washer,keyway, manufactured by Eaton Aerospace, Llc Dba Jackson South, classified under FSC 5310, Nuts and Washers. Status: active.
NSN 5310-01-121-8291 has 2 manufacturer part numbers on file: 823669 PIECE 62 (Eaton Aerospace, Llc Dba Jackson South), 201397 (Eaton Aerospace, Llc Dba Jackson South).
1 possible match (shared part number, not a government interchangeability claim): 5310-01-545-6980. Verify interchangeability with system specifications before substitution.
Key specifications for 201397: External Keyway Width: 0.250 INCHES NOMINAL IN; Material Document and Classification: 100 FSCM 62938 MFR REF SINGLE MATERIAL RESPONSE OVERALL; Outside Diameter: 1.750 INCHES NOMINAL IN; Material Thickness: 0.438 INCHES NOMINAL IN. 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.