The Washer,flat, cataloged under National Stock Number 5310-01-280-5789, is classified within Federal Supply Class 5310 (Nuts and Washers) of the Hardware and Abrasives group. The manufacturer of record is A and M Aerospace, Inc.. 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5310-01-280-5789 |
| Primary Part Number | 4F69213-101A |
| Item Name | Washer,flat |
| FSC / FSG | 5310 / 53 — Nuts and Washers |
| Manufacturer | A and M Aerospace, Inc. |
| Status | ACTIVE |
| Length | 2.440 INCHES NOMINAL IN |
| Radius at Large End | 0.900 INCHES NOMINAL IN |
| Material Document and Classification | MIL-S-5059,TYPE 301 MIL SPEC SINGLE MATERIAL RESPONSE OVERALL |
| Cross-Sectional Shape Style | RECTANGULAR |
| Peripheral Shape Style | OVAL |
| Width | 1.800 INCHES NOMINAL IN |
| Material | STEEL COMP 301 OVERALL |
| Radius at Small End | 0.310 INCHES NOMINAL IN |
| Thickness | 0.063 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 |
|---|---|
| 4F69213-101A | A and M Aerospace, Inc. (USA) |
| Reference | Meaning |
|---|---|
| 4F69213-101A | 3/2 Design control — primary reference U.S. Government activity |
NSN 5310-01-280-5789 is a Washer,flat, manufactured by A and M Aerospace, Inc., classified under FSC 5310, Nuts and Washers. Status: active.
NSN 5310-01-280-5789 has 1 manufacturer part number on file: 4F69213-101A (A and M Aerospace, Inc.).
Key specifications for 4F69213-101A: Length: 2.440 INCHES NOMINAL IN; Radius at Large End: 0.900 INCHES NOMINAL IN; Material Document and Classification: MIL-S-5059,TYPE 301 MIL SPEC 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.