The Ring,piston, cataloged under National Stock Number 2815-00-910-8731, is classified within Federal Supply Class 2815 (Diesel Engines and Components) of the Engines, Turbines, and Components group. The manufacturer of record is Cummins Inc.. Government technical data includes 8 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 2815-00-910-8731 |
| Primary Part Number | 168680 |
| Item Name | Ring,piston |
| FSC / FSG | 2815 / 28 — Diesel Engines and Components |
| Manufacturer | Cummins Inc. |
| Status | ACTIVE |
| FSC Application Data | DIESEL ENGINE |
| Cross-Sectional Shape Style | SINGLE HOOK, STRAIGHT FACE KEYSTONE SCRAPER |
| Joint Style | VERTICAL JOINT |
| Radial Wall Thickness | 0.1990 INCHES MINIMUM AND 0.2090 INCHES MAXIMUM IN |
| Ring Style | CONCENTRIC |
| Surface Treatment | PHOSPHATE OVERALL |
| Standard Bore Diameter | 5.500 INCHES IN |
| Material | IRON OVERALL |
| 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 |
|---|---|
| 168680 PRIMARY | Cummins Inc. (USA) |
| Reference | Meaning |
|---|---|
| R28652 | 5/9 Secondary reference Kaydon Ring & Seal Inc Dba Skf Precision Technologies |
NSN 2815-00-910-8731 is a Ring,piston, manufactured by Cummins Inc., classified under FSC 2815, Diesel Engines and Components. Status: active.
NSN 2815-00-910-8731 has 1 manufacturer part number on file: 168680 (Cummins Inc.).
Key specifications for 168680: FSC Application Data: DIESEL ENGINE; Overall Width: 0.1220 INCHES MINIMUM AND 0.1240 INCHES MAXIMUM IN; Cross-Sectional Shape Style: SINGLE HOOK, STRAIGHT FACE KEYSTONE SCRAPER; Joint Style: VERTICAL JOINT. 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.