The Ring,retaining, cataloged under National Stock Number 5325-01-181-6236, is classified within Federal Supply Class 5325 (No Item Name Available) of the Hardware and Abrasives group. The primary manufacturer of record is The Boeing Company Div Defense. Government technical data includes 10 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 9 commercial cross-references from 6 manufacturers, enabling identification through both NSN and commercial part number lookups. 8 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Cancelled.
| Parameter | Value |
|---|---|
| NSN | 5325-01-181-6236 |
| Primary Part Number | 3M1056A6 |
| Item Name | Ring,retaining |
| FSC / FSG | 5325 / 53 — No Item Name Available |
| Manufacturer | The Boeing Company Div Defense |
| Status | CANCELLED |
| Casehardening Indicator | NOT CASEHARDENED |
| Inside Diameter | 0.345 INCHES MINIMUM AND 0.355 INCHES MAXIMUM IN |
| Ring Style | STRAIGHT GAP |
| Material | COBALT ALLOY |
| Surface Treatment | PASSIVATE |
| Usage Design | INTERNAL |
| End Style | 90 DEGREE PARALLEL |
| Cross-Sectional Shape Style | RECTANGULAR |
| Major Thickness | 0.014 INCHES MINIMUM AND 0.020 INCHES MAXIMUM IN |
| Outside Diameter | 0.440 INCHES NOMINAL IN |
| Acquisition Status | CANCELLED |
| HAZMAT | No |
| Part Number | Manufacturer |
|---|---|
| 3041-6 | Sps Technologies, Llc Dba Aerospace Fasteners Group Div Aerospace - Santa Ana (USA) |
| 4M156A6 | The Boeing Company Div Defense (USA) |
| 3M1056A6 | Howmet Global Fastening Systems Inc Div Torrance Operations (USA) |
| 3041-6 | Howmet Global Fastening Systems Inc. Div Tridair Products (USA) |
| 3M1056-6 | The Boeing Company Div Defense (USA) |
| 3041-6 | Howmet Global Fastening Systems Inc. Div Voi-Shan Products (USA) |
| 3041-6 | Howmet Global Fastening Systems Inc Div Torrance Operations (USA) |
| 3M1056A6 PRIMARY | The Boeing Company Div Defense (USA) |
| 3041-6 | Sps Technologies, Llc Dba PB Fasteners (USA) |
NSN 5325-01-181-6236 is a Ring,retaining, manufactured by The Boeing Company Div Defense, classified under FSC 5325 (No Item Name Available). Status: cancelled.
NSN 5325-01-181-6236 has 9 cross-referenced part numbers: 3041-6 (Sps Technologies, Llc Dba Aerospace Fasteners Group Div Aerospace - Santa Ana), 4M156A6 (The Boeing Company Div Defense), 3M1056A6 (Howmet Global Fastening Systems Inc Div Torrance Operations), 3041-6 (Howmet Global Fastening Systems Inc. Div Tridair Products), 3M1056-6 (The Boeing Company Div Defense) and 4 more.
There are 8 known substitutes for 5325-01-181-6236: 3110-00-156-8202, 3455-00-236-3633, 4720-00-833-1868 and 5 more. Verify interchangeability with system specifications before substitution.
Key specifications for 3M1056A6: Casehardening Indicator: NOT CASEHARDENED; Inside Diameter: 0.345 INCHES MINIMUM AND 0.355 INCHES MAXIMUM IN; Ring Style: STRAIGHT GAP; Material: COBALT ALLOY. 10 total characteristics are documented in the Federal Logistics Information System.
NSN 5325-01-181-6236 is currently cancelled. Check with the Defense Logistics Agency for current availability and authorized substitutes.