The Ring,lock,serrated, cataloged under National Stock Number 5365-01-345-2126, is classified within Federal Supply Class 5365 (Bushings, Rings, Shims, and Spacers) of the Hardware and Abrasives group. Government technical data includes 9 specifications, cited from the U.S. Government catalog. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5365-01-345-2126 |
| Item Name | Ring,lock,serrated |
| FSC / FSG | 5365 / 53 — Bushings, Rings, Shims, and Spacers |
| Status | ACTIVE |
| Material Document and Classification | AMS 5731,TY A286 ASSN STD SINGLE MATERIAL RESPONSE OR AMS 5734,TY A286 ASSN STD SINGLE MATERIAL RESPONSE |
| Overall Outside Diameter | 0.903 INCHES MINIMUM AND 0.912 INCHES MAXIMUM IN |
| Inner Serration Quantity | 30 |
| Pilot Diameter | 0.837 INCHES MINIMUM AND 0.844 INCHES MAXIMUM IN |
| Inside Diameter | 0.849 INCHES MINIMUM AND 0.864 INCHES MAXIMUM IN |
| Side Outer Serrations Omitted for Close Edge Installation | TWO SIDES |
| Surface Treatment | PASSIVATE |
| Outer Serration Quantity | 18 |
| 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 |
| Reference | Meaning |
|---|---|
| MS51997-108P | 2/2 Government specification standardization U.S. Government activity |
| MS51997-108 | 5/9 Secondary reference U.S. Government activity |
NSN 5365-01-345-2126 is a Ring,lock,serrated, classified under FSC 5365, Bushings, Rings, Shims, and Spacers. Status: active.
Key specifications for 5365-01-345-2126: Overall Height: 0.208 INCHES MINIMUM AND 0.223 INCHES MAXIMUM IN; Material Document and Classification: AMS 5731,TY A286 ASSN STD SINGLE MATERIAL RESPONSE OR AMS 5734,TY A286 ASSN STD SINGLE MATERIAL RESPONSE; Overall Outside Diameter: 0.903 INCHES MINIMUM AND 0.912 INCHES MAXIMUM IN; Inner Serration Quantity: 30. 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.