The Ring,retaining, cataloged under National Stock Number 5325-01-050-7290, is classified within Federal Supply Class 5325 (Fastening Devices) of the Hardware and Abrasives group. The manufacturer of record is The Boeing Company Div Commercial. 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through both NSN and commercial part number lookups. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5325-01-050-7290 |
| Primary Part Number | BACR12BU12SN |
| Item Name | Ring,retaining |
| FSC / FSG | 5325 / 53 — Fastening Devices |
| Manufacturer | The Boeing Company Div Commercial |
| Status | ACTIVE |
| Material Hardness Rating | 40.0 ROCKWELL C MINIMUM AND 45.0 ROCKWELL C MAXIMUM |
| Usage Design | EXTERNAL |
| Material Document and Classification | AISI 1045 ASSN STD SINGLE MATERIAL RESPONSE |
| Cross-Sectional Shape Style | DOUBLE OVAL |
| Outside Diameter | 0.735 INCHES MINIMUM AND 0.755 INCHES MAXIMUM IN |
| Major Thickness | 0.100 INCHES MINIMUM AND 0.110 INCHES MAXIMUM IN |
| Inside Diameter | 0.581 INCHES MINIMUM AND 0.621 INCHES MAXIMUM IN |
| Casehardening Indicator | NOT CASEHARDENED |
| Ring Style | SPLIT |
| Surface Treatment | NICKEL |
| Material | STEEL COMP 1045 |
| 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 |
|---|---|
| BACR12BU12SN PRIMARY | The Boeing Company Div Commercial (USA) |
| Reference | Meaning |
|---|---|
| BACR12BU12SN | 5/2 Secondary reference U.S. Government activity |
| BACR12BU12SN | 5/2 Secondary reference U.S. Government activity |
NSN 5325-01-050-7290 is a Ring,retaining, manufactured by The Boeing Company Div Commercial, classified under FSC 5325, Fastening Devices. Status: active.
NSN 5325-01-050-7290 has 1 manufacturer part number on file: BACR12BU12SN (The Boeing Company Div Commercial).
Key specifications for BACR12BU12SN: Material Hardness Rating: 40.0 ROCKWELL C MINIMUM AND 45.0 ROCKWELL C MAXIMUM; Usage Design: EXTERNAL; Material Document and Classification: AISI 1045 ASSN STD SINGLE MATERIAL RESPONSE; Cross-Sectional Shape Style: DOUBLE OVAL. 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.