The Ring,retaining, cataloged under National Stock Number 5325-01-566-1095, is classified within Federal Supply Class 5325 (Fastening Devices) of the Hardware and Abrasives group. The manufacturer of record is Mcmaster-Carr Supply Co. Government technical data includes 5 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog.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 | 5325-01-566-1095 |
| Primary Part Number | 90177A211 |
| Item Name | Ring,retaining |
| FSC / FSG | 5325 / 53 — Fastening Devices |
| Manufacturer | Mcmaster-Carr Supply Co |
| Status | ACTIVE |
| Outside Diameter | 0.430 INCHES NOMINAL IN |
| Inside Diameter | 0.328 INCHES NOMINAL IN |
| Ring Style | SPIRAL |
| Surface Treatment | ZINC |
| Material | STEEL |
| 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 |
|---|---|
| 90177A211 PRIMARY | Mcmaster-Carr Supply Co (USA) |
| Reference | Meaning |
|---|---|
| 0214090 FIND 3 | 5/1 Secondary reference Niwc Pacific San Diego Navy Erp Dba Naval Information Warfare Center Pacific Div Naval Information Warfare Center Pacific |
NSN 5325-01-566-1095 is a Ring,retaining, manufactured by Mcmaster-Carr Supply Co, classified under FSC 5325, Fastening Devices. Status: active.
NSN 5325-01-566-1095 has 1 manufacturer part number on file: 90177A211 (Mcmaster-Carr Supply Co).
Key specifications for 90177A211: Outside Diameter: 0.430 INCHES NOMINAL IN; Inside Diameter: 0.328 INCHES NOMINAL IN; Ring Style: SPIRAL; Special Features: SPLIT RING THICKNESS IS 0.074 INCH IN. 5 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.