The Ring,retaining, cataloged under National Stock Number 5325-01-008-9635, is classified within Federal Supply Class 5325 (Fastening Devices) of the Hardware and Abrasives group. The manufacturer of record is Ontic Engineering & Manufacturing, Inc Dba Ontic Us. 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog.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 | 5325-01-008-9635 |
| Primary Part Number | 645034S66 |
| Item Name | Ring,retaining |
| FSC / FSG | 5325 / 53 — Fastening Devices |
| Manufacturer | Ontic Engineering & Manufacturing, Inc Dba Ontic Us |
| Status | ACTIVE |
| Usage Design | EXTERNAL |
| Strength Rating | ERR-060 |
| Cross-Sectional Shape Style | DOUBLE OVAL |
| Major Thickness | 0.034 INCHES MINIMUM AND 0.038 INCHES MAXIMUM IN |
| Inside Diameter | 0.620 INCHES MINIMUM AND 0.630 INCHES MAXIMUM IN |
| Casehardening Indicator | NOT CASEHARDENED |
| Ring Style | SPIRAL |
| Material | STEEL COMP 302 |
| 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 |
|---|---|
| 645034S66 | Ontic Engineering & Manufacturing, Inc Dba Ontic Us (USA) |
| Reference | Meaning |
|---|---|
| 645034S66 | 3/2 Design control — primary reference U.S. Government activity |
NSN 5325-01-008-9635 is a Ring,retaining, manufactured by Ontic Engineering & Manufacturing, Inc Dba Ontic Us, classified under FSC 5325, Fastening Devices. Status: active.
NSN 5325-01-008-9635 has 1 manufacturer part number on file: 645034S66 (Ontic Engineering & Manufacturing, Inc Dba Ontic Us).
Key specifications for 645034S66: Usage Design: EXTERNAL; Strength Rating: ERR-060; Cross-Sectional Shape Style: DOUBLE OVAL; Major Thickness: 0.034 INCHES MINIMUM AND 0.038 INCHES MAXIMUM IN. 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.