The Ring,lock,serrated, cataloged under National Stock Number 5365-01-040-5223, is classified within Federal Supply Class 5365 (Bushings, Rings, Shims, and Spacers) of the Hardware and Abrasives group. The manufacturer of record is Federal Commercial Item Description Promulgated by General Services Administration Washington DC. Government technical data includes 8 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through both NSN and commercial part number lookups. 3 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5365-01-040-5223 |
| Primary Part Number | AA59558-201 |
| Item Name | Ring,lock,serrated |
| FSC / FSG | 5365 / 53 — Bushings, Rings, Shims, and Spacers |
| Manufacturer | Federal Commercial Item Description Promulgated by General Services Administration Washington DC |
| Status | ACTIVE |
| Material Document and Classification | AMS 5734 ASSN STD SINGLE MATERIAL RESPONSE |
| Overall Outside Diameter | 0.240 INCHES MINIMUM AND 0.249 INCHES MAXIMUM IN |
| Inner Serration Quantity | 14 |
| Pilot Diameter | 0.218 INCHES MINIMUM AND 0.228 INCHES MAXIMUM IN |
| Inside Diameter | 0.158 INCHES MINIMUM AND 0.165 INCHES MAXIMUM IN |
| Side Outer Serrations Omitted for Close Edge Installation | TWO SIDES |
| Surface Treatment | PASSIVATE |
| Material | IRON ALLOY 660 |
| 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 |
|---|---|
| AA59558-201 | Federal Commercial Item Description Promulgated by General Services Administration Washington DC (USA) |
| Reference | Meaning |
|---|---|
| A-A-59558 | 5/1 Secondary reference Federal Commercial Item Description Promulgated by General Services Administration Washington DC |
| MIL-I-45910 | 4/1 Identification reference U.S. Government activity |
| MS51990E102P | 5/9 Secondary reference U.S. Government activity |
NSN 5365-01-040-5223 is a Ring,lock,serrated, manufactured by Federal Commercial Item Description Promulgated by General Services Administration Washington DC, classified under FSC 5365, Bushings, Rings, Shims, and Spacers. Status: active.
NSN 5365-01-040-5223 has 1 manufacturer part number on file: AA59558-201 (Federal Commercial Item Description Promulgated by General Services Administration Washington DC).
Key specifications for AA59558-201: Overall Height: 0.079 INCHES MINIMUM AND 0.089 INCHES MAXIMUM IN; Material Document and Classification: AMS 5734 ASSN STD SINGLE MATERIAL RESPONSE; Overall Outside Diameter: 0.240 INCHES MINIMUM AND 0.249 INCHES MAXIMUM IN; Inner Serration Quantity: 14. 8 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.