The Ring,retaining, cataloged under National Stock Number 5325-01-220-7597, is classified within Federal Supply Class 5325 (Fastening Devices) of the Hardware and Abrasives group. The manufacturer of record is Timken Gears & Services Inc. Div Philadelphia Gear. The record lists 1 manufacturer part number 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through both NSN and commercial part number lookups. 4 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog.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.
| Item Name | Ring,retaining |
| FSC / FSG | 5325 — Fastening Devices (FSG 53) |
| Manufacturers | Timken Gears & Services Inc. Div Philadelphia Gear (CAGE 17454) |
| Parameter | Value |
|---|---|
| NSN | 5325-01-220-7597 |
| Primary Part Number | 170A887 PIECE 1 |
| Item Name | Ring,retaining |
| FSC / FSG | 5325 / 53 — Fastening Devices |
| Manufacturer | Timken Gears & Services Inc. Div Philadelphia Gear |
| Status | ACTIVE |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL A — No Demilitarization Required |
| Hazard | No hazard code in the DLA record (HMIC N) |
| Part Number | Manufacturer |
|---|---|
| 170A887 PIECE 1 PRIMARY | Timken Gears & Services Inc. Div Philadelphia Gear (USA) |
| Reference | Meaning |
|---|---|
| 662E709 PIECE 159 | 5/9 Secondary reference General Electric Co Naval and Drive Turbine Systems Dept |
| 170A887 PIECE 1 | 5/9 Secondary reference General Electric Co Naval and Drive Turbine Systems Dept |
| 170A887 PIECE 1 | 5/9 Secondary reference General Electric Company |
| 662E709 PIECE 159 | 5/9 Secondary reference General Electric Company |
NSN 5325-01-220-7597 is a Ring,retaining, manufactured by Timken Gears & Services Inc. Div Philadelphia Gear, classified under FSC 5325, Fastening Devices. Status: active.
NSN 5325-01-220-7597 has 1 manufacturer part number on file: 170A887 PIECE 1 (Timken Gears & Services Inc. Div Philadelphia Gear).
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.