The Ring,piston, cataloged under National Stock Number 2805-00-371-5689, is classified within Federal Supply Class 2805 (Gasoline Reciprocating Engines, Except Aircraft; and Components) of the Engines, Turbines, and Components group. The manufacturer of record is Schramm, Inc.. Government technical data includes 7 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. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 2805-00-371-5689 |
| Primary Part Number | G0HD9-1 |
| Item Name | Ring,piston |
| FSC / FSG | 2805 / 28 — Gasoline Reciprocating Engines, Except Aircraft; and Components |
| Manufacturer | Schramm, Inc. |
| Status | ACTIVE |
| Cross-Sectional Shape Style | TAPERED FACE, DOUBLE SCRAPER, VENTILATED OIL CONTROL |
| Joint Style | VERTICAL JOINT |
| Oil Passage Type and Quantity | 8 SLOT HORIZONTALLY THROUGH RING |
| Radial Wall Thickness | 0.1730 INCHES MINIMUM AND 0.1830 INCHES MAXIMUM IN |
| Ring Style | CONCENTRIC |
| Standard Bore Diameter | 4.500 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 |
|---|---|
| G0HD9-1 PRIMARY | Schramm, Inc. (USA) |
| G0HD-9-1-0009-0006 | Schramm, Inc. (USA) |
NSN 2805-00-371-5689 is a Ring,piston, manufactured by Schramm, Inc., classified under FSC 2805, Gasoline Reciprocating Engines, Except Aircraft; and Components. Status: active.
NSN 2805-00-371-5689 has 2 manufacturer part numbers on file: G0HD9-1 (Schramm, Inc.), G0HD-9-1-0009-0006 (Schramm, Inc.).
Key specifications for G0HD9-1: Overall Width: 0.1844 INCHES MINIMUM AND 0.1865 INCHES MAXIMUM IN; Cross-Sectional Shape Style: TAPERED FACE, DOUBLE SCRAPER, VENTILATED OIL CONTROL; Joint Style: VERTICAL JOINT; Oil Passage Type and Quantity: 8 SLOT HORIZONTALLY THROUGH RING. 7 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.