The Ring,retaining, cataloged under National Stock Number 5325-01-115-2189, is classified within Federal Supply Class 5325 (Fastening Devices) of the Hardware and Abrasives group. The manufacturer of record is Itt Aerospace Controls Llc Dba Itt Aerospace Controls Unit S. Government technical data includes 10 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through both NSN and commercial part number lookups. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5325-01-115-2189 |
| Primary Part Number | 43120B |
| Item Name | Ring,retaining |
| FSC / FSG | 5325 / 53 — Fastening Devices |
| Manufacturer | Itt Aerospace Controls Llc Dba Itt Aerospace Controls Unit S |
| Status | ACTIVE |
| Usage Design | INTERNAL |
| Strength Rating | ERR-060 |
| Material Document and Classification | MIL-S-5059, TYPE 302 MIL SPEC SINGLE MATERIAL RESPONSE |
| Cross-Sectional Shape Style | RECTANGULAR |
| Outside Diameter | 4.279 INCHES MINIMUM AND 4.314 INCHES MAXIMUM IN |
| Major Thickness | 0.044 INCHES MINIMUM AND 0.048 INCHES MAXIMUM IN |
| Inside Diameter | 3.820 INCHES MINIMUM AND 3.864 INCHES MAXIMUM IN |
| Casehardening Indicator | NOT CASEHARDENED |
| Ring Style | SPECIAL |
| Material | STEEL COMP 302 |
| 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 |
|---|---|
| 43120B PRIMARY | Itt Aerospace Controls Llc Dba Itt Aerospace Controls Unit S (USA) |
| Reference | Meaning |
|---|---|
| 43120A | 5/1 Secondary reference Itt Aerospace Controls Llc Dba Itt Aerospace Controls Unit S |
| UR-412S | 5/2 Secondary reference U.S. Government activity |
NSN 5325-01-115-2189 is a Ring,retaining, manufactured by Itt Aerospace Controls Llc Dba Itt Aerospace Controls Unit S, classified under FSC 5325, Fastening Devices. Status: active.
NSN 5325-01-115-2189 has 1 manufacturer part number on file: 43120B (Itt Aerospace Controls Llc Dba Itt Aerospace Controls Unit S).
Key specifications for 43120B: Usage Design: INTERNAL; Strength Rating: ERR-060; Material Document and Classification: MIL-S-5059, TYPE 302 MIL SPEC SINGLE MATERIAL RESPONSE; Cross-Sectional Shape Style: RECTANGULAR. 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.