The Ring,piston, cataloged under National Stock Number 2805-01-170-7861, 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 Safran Landing Systems Uk Ltd Div Safran Landing Systems Uk. 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 | 2805-01-170-7861 |
| Primary Part Number | 75A430631-2001 |
| Item Name | Ring,piston |
| FSC / FSG | 2805 / 28 — Gasoline Reciprocating Engines, Except Aircraft; and Components |
| Manufacturer | Safran Landing Systems Uk Ltd Div Safran Landing Systems Uk |
| Status | ACTIVE |
| FSC Application Data | LANDING GEAR,WING |
| Material Document and Classification | AMS4640 ASSN STD SINGLE MATERIAL RESPONSE OVERALL |
| Joint Style | VERTICAL JOINT |
| Radial Wall Thickness | 0.1710 INCHES NOMINAL IN |
| Ring Style | CONCENTRIC |
| Standard Bore Diameter | 3.218 INCHES IN |
| Material | ALUMINUM ALLOY OVERALL |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL Q — CCL Item — Commerce Control List |
| Hazard | No hazard code in the DLA record (HMIC N) |
| Criticality Code | X |
| Part Number | Manufacturer |
|---|---|
| 75A430631-2001 PRIMARY | Safran Landing Systems Uk Ltd Div Safran Landing Systems Uk (GBR) |
| 75A430631-2001 | The Boeing Company Div Defense (USA) |
NSN 2805-01-170-7861 is a Ring,piston, manufactured by Safran Landing Systems Uk Ltd Div Safran Landing Systems Uk, classified under FSC 2805, Gasoline Reciprocating Engines, Except Aircraft; and Components. Status: active.
NSN 2805-01-170-7861 has 2 manufacturer part numbers on file: 75A430631-2001 (Safran Landing Systems Uk Ltd Div Safran Landing Systems Uk), 75A430631-2001 (The Boeing Company Div Defense).
Key specifications for 75A430631-2001: FSC Application Data: LANDING GEAR,WING; Overall Width: 0.1750 INCHES NOMINAL IN; Material Document and Classification: AMS4640 ASSN STD SINGLE MATERIAL RESPONSE OVERALL; Joint Style: VERTICAL JOINT. 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.
NSN 2805-01-170-7861 has DEMIL Code Q. 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.