The Ring,retaining, cataloged under National Stock Number 5325-01-139-4295, is classified within Federal Supply Class 5325 (Fastening Devices) of the Hardware and Abrasives group. The manufacturer of record is Kollmorgen Corp. Government technical data includes 9 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. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5325-01-139-4295 |
| Primary Part Number | A-18906 |
| Item Name | Ring,retaining |
| FSC / FSG | 5325 / 53 — Fastening Devices |
| Manufacturer | Kollmorgen Corp |
| Status | ACTIVE |
| Usage Design | EXTERNAL AND INTERNAL |
| Cross-Sectional Shape Style | DOUBLE OVAL |
| Outside Diameter | 9.457 INCHES NOMINAL IN |
| Major Thickness | 0.082 INCHES MINIMUM AND 0.090 INCHES MAXIMUM IN |
| Inside Diameter | 8.637 INCHES MINIMUM AND 8.707 INCHES MAXIMUM IN |
| Casehardening Indicator | NOT CASEHARDENED |
| Ring Style | SPIRAL |
| Surface Treatment | NICKEL |
| Material | STEEL |
| 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 |
|---|---|
| A-18906 PRIMARY | Kollmorgen Corp (USA) |
NSN 5325-01-139-4295 is a Ring,retaining, manufactured by Kollmorgen Corp, classified under FSC 5325, Fastening Devices. Status: active.
NSN 5325-01-139-4295 has 1 manufacturer part number on file: A-18906 (Kollmorgen Corp).
Key specifications for A-18906: Usage Design: EXTERNAL AND INTERNAL; Cross-Sectional Shape Style: DOUBLE OVAL; Outside Diameter: 9.457 INCHES NOMINAL IN; Major Thickness: 0.082 INCHES MINIMUM AND 0.090 INCHES MAXIMUM IN. 9 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.