The Ring,retaining, cataloged under National Stock Number 5325-01-176-5752, is classified within Federal Supply Class 5325 (Fastening Devices) of the Hardware and Abrasives group. Government technical data includes 10 specifications, cited from the U.S. Government catalog. 5 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5325-01-176-5752 |
| Item Name | Ring,retaining |
| FSC / FSG | 5325 / 53 — Fastening Devices |
| Status | ACTIVE |
| Material Hardness Rating | 40.0 ROCKWELL C MINIMUM AND 51.5 ROCKWELL C MAXIMUM |
| Usage Design | INTERNAL |
| Material Document and Classification | AISI 1074 ASSN STD 1ST MATERIAL RESPONSE OR AISI 1065 ASSN STD 2ND MATERIAL RESPONSE OR AISI 1085 ASSN STD 3RD MATERIAL RESPONSE OR AISI 1095 ASSN STD 4TH MATERIAL RESPONSE OR MIL-S-46049 MIL SPEC 2ND MATERIAL RESPONSE |
| Cross-Sectional Shape Style | DOUBLE OVAL |
| Outside Diameter | 13.417 INCHES MINIMUM AND 13.537 INCHES MAXIMUM IN |
| Major Thickness | 0.182 INCHES MINIMUM AND 0.192 INCHES MAXIMUM IN |
| Inside Diameter | 12.293 INCHES NOMINAL IN |
| Casehardening Indicator | NOT CASEHARDENED |
| Ring Style | SPECIAL FLAT |
| Material | STEEL COMP 1074 OR STEEL COMP 1065 OR STEEL COMP 1085 OR STEEL COMP 1095 |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL A — No Demilitarization Required |
| Hazard | No hazard code in the DLA record (HMIC N) |
| Criticality Code | X |
| Reference | Meaning |
|---|---|
| 112142047 FIND 3 | 5/1 Secondary reference Bird-Johnson Propeller Company, Llc |
| M2742640203A | 2/2 Government specification standardization U.S. Government activity |
| MIL-DTL-27426/4 | 4/1 Identification reference U.S. Government activity |
| RRN-1275 | 5/1 Secondary reference U.S. Government activity |
| MIL-DTL-27426 | 5/9 Secondary reference U.S. Government activity |
NSN 5325-01-176-5752 is a Ring,retaining, classified under FSC 5325, Fastening Devices. Status: active.
Key specifications for 5325-01-176-5752: Material Hardness Rating: 40.0 ROCKWELL C MINIMUM AND 51.5 ROCKWELL C MAXIMUM; Usage Design: INTERNAL; Material Document and Classification: AISI 1074 ASSN STD 1ST MATERIAL RESPONSE OR AISI 1065 ASSN STD 2ND MATERIAL RESPONSE OR AISI 1085 ASSN STD 3RD MATERIAL RESPONSE OR AISI 1095 ASSN STD 4TH MATERIAL RESPONSE OR MIL-S-46049 MIL SPEC 2ND MATERIAL RESPONSE; Cross-Sectional Shape Style: DOUBLE OVAL. 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.