The Ring,retaining, cataloged under National Stock Number 5325-00-598-2239, is classified within Federal Supply Class 5325 (Fastening Devices) of the Hardware and Abrasives group. The manufacturer of record is Satair A/s. Government technical data includes 10 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. 5 items share a part number with this NSN in the catalog (possible match — not a government interchangeability claim). Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5325-00-598-2239 |
| Primary Part Number | 66051 |
| Item Name | Ring,retaining |
| FSC / FSG | 5325 / 53 — Fastening Devices |
| Manufacturer | Satair A/s |
| Status | ACTIVE |
| Usage Design | INTERNAL AND EXTERNAL |
| End Style | VERTEX BELOW CENTER |
| Material Document and Classification | AMS 6455B ASSN STD SINGLE MATERIAL RESPONSE |
| Cross-Sectional Shape Style | ROUNDED CORNERS |
| Outside Diameter | 6.660 INCHES MINIMUM AND 6.690 INCHES MAXIMUM IN |
| Major Thickness | 0.062 INCHES NOMINAL IN |
| Inside Diameter | 6.530 INCHES MINIMUM AND 6.560 INCHES MAXIMUM IN |
| Casehardening Indicator | NOT CASEHARDENED |
| Ring Style | STRAIGHT GAP |
| Material | STEEL COMP 6150 |
| 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 |
|---|---|
| 66051 | Satair A/s (DNK) |
| Reference | Meaning |
|---|---|
| 66051 | 3/2 Design control — primary reference U.S. Government activity |
NSN 5325-00-598-2239 is a Ring,retaining, manufactured by Satair A/s, classified under FSC 5325, Fastening Devices. Status: active.
NSN 5325-00-598-2239 has 1 manufacturer part number on file: 66051 (Satair A/s).
5 possible matches (shared part number, not a government interchangeability claim): 5330-00-994-5791, 5310-01-109-3030, 1730-01-376-2660. Verify interchangeability with system specifications before substitution.
Key specifications for 66051: Usage Design: INTERNAL AND EXTERNAL; End Style: VERTEX BELOW CENTER; Material Document and Classification: AMS 6455B ASSN STD SINGLE MATERIAL RESPONSE; Cross-Sectional Shape Style: ROUNDED CORNERS. 10 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.