The Ring,retaining, cataloged under National Stock Number 5325-01-121-0577, is classified within Federal Supply Class 5325 (Fastening Devices) of the Hardware and Abrasives group. The manufacturer of record is Hamilton Sundstrand Corporation Dba Collins Aerospace. 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. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5325-01-121-0577 |
| Primary Part Number | 544044 |
| Item Name | Ring,retaining |
| FSC / FSG | 5325 / 53 — Fastening Devices |
| Manufacturer | Hamilton Sundstrand Corporation Dba Collins Aerospace |
| Status | ACTIVE |
| Usage Design | EXTERNAL |
| Material Diameter | 0.0307 INCHES MINIMUM AND 0.0317 INCHES MAXIMUM IN |
| Material Document and Classification | AMS 5688 ASSN STD SINGLE MATERIAL RESPONSE |
| Cross-Sectional Shape Style | ROUND |
| Outside Diameter | 0.535 INCHES MINIMUM AND 0.555 INCHES MAXIMUM IN |
| Inside Diameter | 0.472 INCHES MINIMUM AND 0.494 INCHES MAXIMUM IN |
| Casehardening Indicator | NOT CASEHARDENED |
| Ring Style | WIRE |
| Material | STEEL COMP 302 |
| 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 |
|---|---|
| 544044 PRIMARY | Hamilton Sundstrand Corporation Dba Collins Aerospace (USA) |
NSN 5325-01-121-0577 is a Ring,retaining, manufactured by Hamilton Sundstrand Corporation Dba Collins Aerospace, classified under FSC 5325, Fastening Devices. Status: active.
NSN 5325-01-121-0577 has 1 manufacturer part number on file: 544044 (Hamilton Sundstrand Corporation Dba Collins Aerospace).
Key specifications for 544044: Usage Design: EXTERNAL; Material Diameter: 0.0307 INCHES MINIMUM AND 0.0317 INCHES MAXIMUM IN; Material Document and Classification: AMS 5688 ASSN STD SINGLE MATERIAL RESPONSE; Cross-Sectional Shape Style: ROUND. 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.