The Ring,piston, cataloged under National Stock Number 2805-00-513-4577, 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 Hamilton Sundstrand Corporation Dba Collins Aerospace. Government technical data includes 9 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. 2 items share a part number with this NSN in the catalog (possible match — not a government interchangeability claim). Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 2805-00-513-4577 |
| Primary Part Number | 95181 |
| Item Name | Ring,piston |
| FSC / FSG | 2805 / 28 — Gasoline Reciprocating Engines, Except Aircraft; and Components |
| Manufacturer | Hamilton Sundstrand Corporation Dba Collins Aerospace |
| Status | ACTIVE |
| FSC Application Data | AIRCRAFT,AIR CONDITIONING,HEATING,AND PRESSURIZING EQUIP |
| Material Document and Classification | AMS 5610 ASSN STD 1ST MATERIAL RESPONSE OR AMS 5504 ASSN STD 2ND MATERIAL RESPONSE OR AMS 5591 ASSN STD 2ND MATERIAL RESPONSE OVERALL |
| Cross-Sectional Shape Style | PLAIN RECTANGULAR, STRAIGHT FACE |
| Joint Style | VERTICAL/DIAGONAL JOINT |
| Radial Wall Thickness | 0.0800 INCHES MINIMUM AND 0.0850 INCHES MAXIMUM IN |
| Ring Style | CONCENTRIC |
| Surface Treatment | CHEMICAL FILM OVERALL |
| Standard Bore Diameter | 1.126 INCHES IN |
| Material | STEEL COMP 416SE OR STEEL COMP 410 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 |
|---|---|
| 95181 PRIMARY | Hamilton Sundstrand Corporation Dba Collins Aerospace (USA) |
NSN 2805-00-513-4577 is a Ring,piston, manufactured by Hamilton Sundstrand Corporation Dba Collins Aerospace, classified under FSC 2805, Gasoline Reciprocating Engines, Except Aircraft; and Components. Status: active.
NSN 2805-00-513-4577 has 1 manufacturer part number on file: 95181 (Hamilton Sundstrand Corporation Dba Collins Aerospace).
2 possible matches (shared part number, not a government interchangeability claim): 5935-00-557-2601, 4610-01-420-7547. Verify interchangeability with system specifications before substitution.
Key specifications for 95181: FSC Application Data: AIRCRAFT,AIR CONDITIONING,HEATING,AND PRESSURIZING EQUIP; Overall Width: 0.0160 INCHES MINIMUM AND 0.0200 INCHES MAXIMUM IN; Material Document and Classification: AMS 5610 ASSN STD 1ST MATERIAL RESPONSE OR AMS 5504 ASSN STD 2ND MATERIAL RESPONSE OR AMS 5591 ASSN STD 2ND MATERIAL RESPONSE OVERALL; Cross-Sectional Shape Style: PLAIN RECTANGULAR, STRAIGHT FACE. 9 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 2805-00-513-4577 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.