The Ring,retaining, cataloged under National Stock Number 5325-01-703-3732, is classified within Federal Supply Class 5325 (Fastening Devices) of the Hardware and Abrasives group. Government technical data includes 15 specifications, cited from the U.S. Government catalog. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 1 item shares a part number with this NSN in the catalog (possible match — not a government interchangeability claim). Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5325-01-703-3732 |
| Item Name | Ring,retaining |
| FSC / FSG | 5325 / 53 — Fastening Devices |
| Status | ACTIVE |
| Material Hardness Rating | 46.0 ROCKWELL C MINIMUM AND 51.0 ROCKWELL C MAXIMUM |
| Usage Design | EXTERNAL |
| Surface Treatment Document and Classification | AMS-QQ-P-416,TYP II,CL 35 INTERNATIONAL STD/SPEC ALL TREATMENT RESPONSES OR ASTM B696,TYP II,CL 5 INTERNATIONAL STD/SPEC ALL TREATMENT RESPONSES |
| End Style | 90 DEGREE PARALLEL |
| Material Document and Classification | ASTM A568/A568M AMERICAN SOCIETY FOR TESTING AND MATERIALS (ASTM) ALL MATERIAL RESPONSES OR ASTM A684/A684M AMERICAN SOCIETY FOR TESTING AND MATERIALS (ASTM) ALL MATERIAL RESPONSES |
| Cross-Sectional Shape Style | RECTANGULAR |
| Outside Diameter | 2.130 INCHES MINIMUM AND 2.240 INCHES MAXIMUM IN |
| Gap Opening | OPENING 90 DEGREES OR MORE |
| Specification/standard Data | 81349-MIL-R-21248 GOVERNMENT SPECIFICATION |
| Major Thickness | 0.059 INCHES MINIMUM AND 0.065 INCHES MAXIMUM IN |
| Inside Diameter | 1.655 INCHES MINIMUM AND 1.688 INCHES MAXIMUM IN |
| Casehardening Indicator | NOT CASEHARDENED |
| Ring Style | EXTERNAL INVERTED LUGS |
| Surface Treatment | CADMIUM |
| Material | STEEL COMP 1060 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 |
|---|---|
| MS16626-1181 | 2/2 Government specification standardization U.S. Government activity |
| MS16626C | 4/1 Identification reference U.S. Government activity |
NSN 5325-01-703-3732 is a Ring,retaining, classified under FSC 5325, Fastening Devices. Status: active.
1 possible match (shared part number, not a government interchangeability claim): 5325-01-703-3742. Verify interchangeability with system specifications before substitution.
Key specifications for 5325-01-703-3732: Material Hardness Rating: 46.0 ROCKWELL C MINIMUM AND 51.0 ROCKWELL C MAXIMUM; Usage Design: EXTERNAL; Surface Treatment Document and Classification: AMS-QQ-P-416,TYP II,CL 35 INTERNATIONAL STD/SPEC ALL TREATMENT RESPONSES OR ASTM B696,TYP II,CL 5 INTERNATIONAL STD/SPEC ALL TREATMENT RESPONSES; End Style: 90 DEGREE PARALLEL. 15 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.