The Ring,retaining, cataloged under National Stock Number 5325-00-012-1027, is classified within Federal Supply Class 5325 (Fastening Devices) of the Hardware and Abrasives group. The manufacturer of record is Kester Inc. Government technical data includes 8 specifications, cited from the U.S. Government catalog. The record lists 2 manufacturer part numbers for this item, enabling identification through both NSN and commercial part number lookups. 4 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5325-00-012-1027 |
| Primary Part Number | RPA300363PC9 |
| Item Name | Ring,retaining |
| FSC / FSG | 5325 / 53 — Fastening Devices |
| Manufacturer | Kester Inc |
| Status | ACTIVE |
| Usage Design | EXTERNAL |
| Cross-Sectional Shape Style | DOUBLE OVAL |
| Outside Diameter | 1.883 INCHES NOMINAL IN |
| Major Thickness | 0.061 INCHES NOMINAL IN |
| Inside Diameter | 1.647 INCHES NOMINAL IN |
| Casehardening Indicator | NOT CASEHARDENED |
| Ring Style | SPIRAL |
| 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 |
|---|---|
| RG1098 | Kocsis Technologies Inc Dba Kocsis Technologies Inc (USA) |
| RPA300363PC9 PRIMARY | Kester Inc (USA) |
| Reference | Meaning |
|---|---|
| RPA300363PC9 | 5/9 Secondary reference Litton Systems Inc Sub of Litton Industries Inc Kester Solder Div |
| RG1098 | 5/9 Secondary reference Ambac International Corporation Div Ambac International |
| RG1098 | 5/9 Secondary reference Automotive Inc Fluid Power Systems Components Div Sub of United Technologies Corp |
| RG 1098 | C/1 Advisory reference — outside the item-of-supply concept Zf Industrieantriebe Witten Gmbh |
NSN 5325-00-012-1027 is a Ring,retaining, manufactured by Kester Inc, classified under FSC 5325, Fastening Devices. Status: active.
NSN 5325-00-012-1027 has 2 manufacturer part numbers on file: RG1098 (Kocsis Technologies Inc Dba Kocsis Technologies Inc), RPA300363PC9 (Kester Inc).
Key specifications for RPA300363PC9: Usage Design: EXTERNAL; Cross-Sectional Shape Style: DOUBLE OVAL; Outside Diameter: 1.883 INCHES NOMINAL IN; Major Thickness: 0.061 INCHES NOMINAL IN. 8 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.