The Ring,retaining, cataloged under National Stock Number 5325-00-044-2881, 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 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog.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 | 5325-00-044-2881 |
| Primary Part Number | 99-4727 |
| Item Name | Ring,retaining |
| FSC / FSG | 5325 / 53 — Fastening Devices |
| Manufacturer | Ontic Engineering & Manufacturing, Inc Dba Ontic Us |
| Status | ACTIVE |
| Usage Design | EXTERNAL |
| Material Diameter | 0.046 INCHES MINIMUM AND 0.049 INCHES MAXIMUM IN |
| Material Document and Classification | AMS 5673 ASSN STD SINGLE MATERIAL RESPONSE |
| Cross-Sectional Shape Style | ROUND |
| Outside Diameter | 0.737 INCHES MINIMUM AND 0.753 INCHES MAXIMUM IN |
| Inside Diameter | 0.645 INCHES MINIMUM AND 0.655 INCHES MAXIMUM IN |
| Casehardening Indicator | NOT CASEHARDENED |
| Ring Style | C |
| Material | STEEL COMP 631 |
| 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 |
|---|---|
| 99-4727 | Ontic Engineering & Manufacturing, Inc Dba Ontic Us (USA) |
| Reference | Meaning |
|---|---|
| 99-4727 | 3/2 Design control — primary reference U.S. Government activity |
NSN 5325-00-044-2881 is a Ring,retaining, manufactured by Ontic Engineering & Manufacturing, Inc Dba Ontic Us, classified under FSC 5325, Fastening Devices. Status: active.
NSN 5325-00-044-2881 has 1 manufacturer part number on file: 99-4727 (Ontic Engineering & Manufacturing, Inc Dba Ontic Us).
Key specifications for 99-4727: Usage Design: EXTERNAL; Material Diameter: 0.046 INCHES MINIMUM AND 0.049 INCHES MAXIMUM IN; Material Document and Classification: AMS 5673 ASSN STD SINGLE MATERIAL RESPONSE; Cross-Sectional Shape Style: ROUND. 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.