The Ring,retaining, cataloged under National Stock Number 5325-00-050-9203, is classified within Federal Supply Class 5325 (Fastening Devices) of the Hardware and Abrasives group. The manufacturer of record is Jewell Instruments Llc. 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5325-00-050-9203 |
| Primary Part Number | 821521 |
| Item Name | Ring,retaining |
| FSC / FSG | 5325 / 53 — Fastening Devices |
| Manufacturer | Jewell Instruments Llc |
| Status | ACTIVE |
| Material Hardness Rating | 48.0 ROCKWELL C MINIMUM AND 53.0 ROCKWELL C MAXIMUM |
| Usage Design | EXTERNAL |
| Material Document and Classification | FED STD 66, COMP 1060 FED STD 1ST MATERIAL RESPONSE AND FED STD 66, COMP 1061 FED STD 2ND MATERIAL RESPONSE AND FED STD 66, COMP 1064 FED STD 3RD MATERIAL RESPONSE AND FED STD 66, COMP 1065 FED STD 4TH MATERIAL RESPONSE |
| Cross-Sectional Shape Style | RECTANGULAR |
| Major Thickness | 0.013 INCHES MINIMUM AND 0.017 INCHES MAXIMUM IN |
| Inside Diameter | 0.091 INCHES MINIMUM AND 0.095 INCHES MAXIMUM IN |
| Casehardening Indicator | NOT CASEHARDENED |
| Ring Style | E |
| Material | STEEL COMP 1060 OR STEEL COMP 1561 OR STEEL COMP 1064 OR STEEL COMP 1065 |
| 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 |
|---|---|
| 821521 PRIMARY | Jewell Instruments Llc (USA) |
| Reference | Meaning |
|---|---|
| 821521-5 | 5/9 Secondary reference Jewell Instruments Llc |
NSN 5325-00-050-9203 is a Ring,retaining, manufactured by Jewell Instruments Llc, classified under FSC 5325, Fastening Devices. Status: active.
NSN 5325-00-050-9203 has 1 manufacturer part number on file: 821521 (Jewell Instruments Llc).
Key specifications for 821521: Material Hardness Rating: 48.0 ROCKWELL C MINIMUM AND 53.0 ROCKWELL C MAXIMUM; Usage Design: EXTERNAL; Material Document and Classification: FED STD 66, COMP 1060 FED STD 1ST MATERIAL RESPONSE AND FED STD 66, COMP 1061 FED STD 2ND MATERIAL RESPONSE AND FED STD 66, COMP 1064 FED STD 3RD MATERIAL RESPONSE AND FED STD 66, COMP 1065 FED STD 4TH MATERIAL RESPONSE; Cross-Sectional Shape Style: RECTANGULAR. 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.