The Ring,retaining, cataloged under National Stock Number 5325-01-121-2013, is classified within Federal Supply Class 5325 (Fastening Devices) of the Hardware and Abrasives group. The manufacturer of record is Curtiss-Wright Flow Control Corporation Dba Curtiss-Wright Flow Control Co Div Curtiss-Wright / Nu-Torque. 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through both NSN and commercial part number lookups. 3 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog.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.
| Item Name | Ring,retaining |
| FSC / FSG | 5325 — Fastening Devices (FSG 53) |
| Manufacturers | Curtiss-Wright Flow Control Corporation Dba Curtiss-Wright Flow Control Co Div Curtiss-Wright / Nu-Torque (CAGE 63600) |
| Parameter | Value |
|---|---|
| NSN | 5325-01-121-2013 |
| Primary Part Number | UR-500-S |
| Item Name | Ring,retaining |
| FSC / FSG | 5325 / 53 — Fastening Devices |
| Manufacturer | Curtiss-Wright Flow Control Corporation Dba Curtiss-Wright Flow Control Co Div Curtiss-Wright / Nu-Torque |
| Status | ACTIVE |
| 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 |
|---|---|
| UR-500-S PRIMARY | Curtiss-Wright Flow Control Corporation Dba Curtiss-Wright Flow Control Co Div Curtiss-Wright / Nu-Torque (USA) |
| Reference | Meaning |
|---|---|
| 14100 | D/9 Drawing number reference only Curtiss-Wright Flow Control Corporation Dba Curtiss-Wright Flow Control Co Div Curtiss-Wright / Nu-Torque |
| 14100 PL REV V FIND NO 123 | 5/1 Secondary reference Curtiss-Wright Flow Control Corporation Dba Curtiss-Wright Flow Control Co Div Curtiss-Wright / Nu-Torque |
| UR500S | 3/2 Design control — primary reference U.S. Government activity |
NSN 5325-01-121-2013 is a Ring,retaining, manufactured by Curtiss-Wright Flow Control Corporation Dba Curtiss-Wright Flow Control Co Div Curtiss-Wright / Nu-Torque, classified under FSC 5325, Fastening Devices. Status: active.
NSN 5325-01-121-2013 has 1 manufacturer part number on file: UR-500-S (Curtiss-Wright Flow Control Corporation Dba Curtiss-Wright Flow Control Co Div Curtiss-Wright / Nu-Torque).
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.