The Ring Set,piston, cataloged under National Stock Number 2805-00-767-3138, 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 U S Army Tank Automotive Command Amsta-Im-Mm. Government technical data includes 3 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 | 2805-00-767-3138 |
| Primary Part Number | 5702855 |
| Item Name | Ring Set,piston |
| FSC / FSG | 2805 / 28 — Gasoline Reciprocating Engines, Except Aircraft; and Components |
| Manufacturer | U S Army Tank Automotive Command Amsta-Im-Mm |
| Status | ACTIVE |
| Ring Set Component Parts | COMPRESSION RING,1855572,12204,8; CPMPRESSION RING,1855573,12204,8; OIL RING,1855574,12204,8; EXPANDER RING,1737675,12204,8 |
| Piston Accommodation Quantity | 8 |
| Standard Bore Diameter | 4.125 INCHES IN |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL B — Remove Demilitarization Key Points |
| Hazard | No hazard code in the DLA record (HMIC N) |
| Criticality Code | X |
| Part Number | Manufacturer |
|---|---|
| 5702855 PRIMARY | U S Army Tank Automotive Command Amsta-Im-Mm (USA) |
NSN 2805-00-767-3138 is a Ring Set,piston, manufactured by U S Army Tank Automotive Command Amsta-Im-Mm, classified under FSC 2805, Gasoline Reciprocating Engines, Except Aircraft; and Components. Status: active.
NSN 2805-00-767-3138 has 1 manufacturer part number on file: 5702855 (U S Army Tank Automotive Command Amsta-Im-Mm).
Key specifications for 5702855: Ring Set Component Parts: COMPRESSION RING,1855572,12204,8; CPMPRESSION RING,1855573,12204,8; OIL RING,1855574,12204,8; EXPANDER RING,1737675,12204,8; Piston Accommodation Quantity: 8; Standard Bore Diameter: 4.125 INCHES IN. 3 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.
NSN 2805-00-767-3138 has DEMIL Code B. Demilitarization may be required before disposal or transfer to non-military entities.
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.