The Ring,retaining, cataloged under National Stock Number 5325-01-549-5189, 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 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5325-01-549-5189 |
| Primary Part Number | 91065A620 |
| Item Name | Ring,retaining |
| FSC / FSG | 5325 / 53 — Fastening Devices |
| Manufacturer | Mcmaster-Carr Supply Co |
| Status | ACTIVE |
| End Style | 90 DEGREE PARALLEL |
| Material Diameter | 0.010 INCHES NOMINAL IN |
| Supplementary Features | 18-8 SS PANEL SCREW RETAINING RING FOR 4-40 SCREW |
| Cross-Sectional Shape Style | ROUND |
| Outside Diameter | 0.171 INCHES NOMINAL IN |
| Inside Diameter | 0.093 INCHES NOMINAL IN |
| Ring Style | STRAIGHT GAP |
| Material | STEEL CORROSION RESISTING |
| 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 |
|---|---|
| 91065A620 PRIMARY | Mcmaster-Carr Supply Co (USA) |
| Reference | Meaning |
|---|---|
| 91065A620 | 5/9 Secondary reference Mcmaster-Carr Supply Co |
NSN 5325-01-549-5189 is a Ring,retaining, manufactured by Mcmaster-Carr Supply Co, classified under FSC 5325, Fastening Devices. Status: active.
NSN 5325-01-549-5189 has 1 manufacturer part number on file: 91065A620 (Mcmaster-Carr Supply Co).
Key specifications for 91065A620: End Style: 90 DEGREE PARALLEL; Material Diameter: 0.010 INCHES NOMINAL IN; Supplementary Features: 18-8 SS PANEL SCREW RETAINING RING FOR 4-40 SCREW; Cross-Sectional Shape Style: ROUND. 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.