The Ring,retaining, cataloged under National Stock Number 5325-01-642-6633, is classified within Federal Supply Class 5325 (Fastening Devices) of the Hardware and Abrasives group. The manufacturer of record is Smalley Steel Ring Co.. Government technical data includes 2 specifications, cited from the U.S. Government catalog. The record lists 2 manufacturer part numbers for this item, enabling identification through both NSN and commercial part number lookups. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5325-01-642-6633 |
| Primary Part Number | WHT-393-S16 |
| Item Name | Ring,retaining |
| FSC / FSG | 5325 / 53 — Fastening Devices |
| Manufacturer | Smalley Steel Ring Co. |
| Status | ACTIVE |
| Outside Diameter | 4.178 INCHES NOMINAL IN |
| 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 |
|---|---|
| WHT-393-S16 PRIMARY | Smalley Steel Ring Co. (USA) |
| WHT-393-S16 | Cunico Corporation (USA) |
NSN 5325-01-642-6633 is a Ring,retaining, manufactured by Smalley Steel Ring Co., classified under FSC 5325, Fastening Devices. Status: active.
NSN 5325-01-642-6633 has 2 manufacturer part numbers on file: WHT-393-S16 (Smalley Steel Ring Co.), WHT-393-S16 (Cunico Corporation).
Key specifications for WHT-393-S16: Outside Diameter: 4.178 INCHES NOMINAL IN; End Item Identification: NPS HIGH PRESSURE GAS REDUC VALVE MANIFOLD RSA0310E61T4A4; Material: STEEL CORROSION RESISTING. 2 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.