The Ring,retaining, cataloged under National Stock Number 5325-00-306-2116, is classified within Federal Supply Class 5325 (Fastening Devices) of the Hardware and Abrasives group. The manufacturer of record is Us Army Aviation and Missile Command. Government technical data includes 11 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 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 | 5325-00-306-2116 |
| Primary Part Number | 8175671 |
| Item Name | Ring,retaining |
| FSC / FSG | 5325 / 53 — Fastening Devices |
| Manufacturer | Us Army Aviation and Missile Command |
| Status | ACTIVE |
| Material Hardness Rating | 37.0 ROCKWELL C MINIMUM AND 43.0 ROCKWELL C MAXIMUM |
| Usage Design | EXTERNAL |
| Strength Rating | ERR-060 |
| Cross-Sectional Shape Style | RECTANGULAR |
| End Play Takeup | 0.015 INCHES MAXIMUM IN |
| Major Thickness | 0.014 INCHES MINIMUM AND 0.016 INCHES MAXIMUM IN |
| Inside Diameter | 0.173 INCHES MINIMUM AND 0.176 INCHES MAXIMUM IN |
| Casehardening Indicator | NOT CASEHARDENED |
| Ring Style | EXTERNAL BOWED |
| Surface Treatment | CADMIUM |
| Material | COPPER ALLOY |
| 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 |
|---|---|
| 8175671 PRIMARY | Us Army Aviation and Missile Command (USA) |
NSN 5325-00-306-2116 is a Ring,retaining, manufactured by Us Army Aviation and Missile Command, classified under FSC 5325, Fastening Devices. Status: active.
NSN 5325-00-306-2116 has 1 manufacturer part number on file: 8175671 (Us Army Aviation and Missile Command).
1 possible match (shared part number, not a government interchangeability claim): 5365-01-141-2165. Verify interchangeability with system specifications before substitution.
Key specifications for 8175671: Material Hardness Rating: 37.0 ROCKWELL C MINIMUM AND 43.0 ROCKWELL C MAXIMUM; Usage Design: EXTERNAL; Strength Rating: ERR-060; Cross-Sectional Shape Style: RECTANGULAR. 11 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.