Retaining Ring
| Federal Supply Class | Fastening Devices |
| National Stock Number | 5325-00-003-0688 |
| Item Name Code | 07623 |
| Part Numbers | PP028KA-237, 4S-592-5-27, 5107-237, 5107-237, 5107-237, 5107-237, 5107-237AP |
| Serial Number | 000030688 |
Specifications
| MATERIAL | STEEL,SAE 1065 THRU SAE 1090 |
| CASEHARDENING INDICATOR | NOT CASEHARDENED |
| RING STYLE | SPECIAL |
| CROSS-SECTIONAL SHAPE STYLE | RECTANGULAR |
| USAGE DESIGN | EXTERNAL |
| INSIDE DIAMETER | 2.174 INCHES MINIMUM AND |
| 2.186 INCHES MAXIMUM | |
| MAJOR THICKNESS | 0.078 INCHES NOMINAL |
Restrictions
| Demilitarization Code | A | Items subject to the Export Administration Regulations (EAR) in parts 773-74 of Title 15, Code of Federal Regulations (CFR) (CCLI or EAR99) and determined by the DoD to present a low risk when released out of DoD control. No DEMIL, MUT or end use certificate is required. May require an export license from DOC. |
| Criticality Code | X | Does not have a nuclear hardened feature or other critical feature such as tolerance, fit restriction or application. |
| Hazardous Materials Code | N | There is no data in the HMIRS and the NSN is in an FSC not generally suspected of containing hazardous materials. |
| Precious Metals Code (PMIC) | U | Precious Metal type is unknown. |
