The Piston Assembly,act, cataloged under National Stock Number 2995-00-016-1017, is classified within Federal Supply Class 2995 (Miscellaneous Engine Accessories, Aircraft) of the Engine Accessories group. The manufacturer of record is Honeywell International Inc. Dba Honeywell International Div Aerospace - Tempe (west Warner Road). Government technical data includes 2 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. 1 item shares a part number with this NSN in the catalog (possible match — not a government interchangeability claim). Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 2995-00-016-1017 |
| Primary Part Number | 665405 |
| Item Name | Piston Assembly,act |
| FSC / FSG | 2995 / 29 — Miscellaneous Engine Accessories, Aircraft |
| Manufacturer | Honeywell International Inc. Dba Honeywell International Div Aerospace - Tempe (west Warner Road) |
| Status | ACTIVE |
| FSC Application Data | ENGINE ACCESSORY,ACFT |
| General Characteristics Item Description | ALUMINUM,QQ&A&256-6,ALLOY 2024&T4,AND CRES,AMS5643,17-4PH,2.568 IN. MIN 2.569 IN. MAX DIA,1.070IN. MIN 1.110 IN. MAX H,4 HOLES 0.116IN. MIN 0.121 IN. MAX DIA,EQUALLY SPACED ON 1.500 IN. DIA,2 HOLES 0.157IN. MIN 0.158 IN. MAX DIA THRU 2 WALLS IN |
| 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 |
|---|---|
| 665405 | Aero International, Llc Dba Ams Engineered Solutions (USA) |
| 665405 PRIMARY | Honeywell International Inc. Dba Honeywell International Div Aerospace - Tempe (west Warner Road) (USA) |
| Reference | Meaning |
|---|---|
| 665405 | 5/9 Secondary reference U.S. Government activity |
NSN 2995-00-016-1017 is a Piston Assembly,act, manufactured by Honeywell International Inc. Dba Honeywell International Div Aerospace - Tempe (west Warner Road), classified under FSC 2995, Miscellaneous Engine Accessories, Aircraft. Status: active.
NSN 2995-00-016-1017 has 2 manufacturer part numbers on file: 665405 (Aero International, Llc Dba Ams Engineered Solutions), 665405 (Honeywell International Inc. Dba Honeywell International Div Aerospace - Tempe (west Warner Road)).
1 possible match (shared part number, not a government interchangeability claim): 2840-00-157-3353. Verify interchangeability with system specifications before substitution.
Key specifications for 665405: FSC Application Data: ENGINE ACCESSORY,ACFT; General Characteristics Item Description: ALUMINUM,QQ&A&256-6,ALLOY 2024&T4,AND CRES,AMS5643,17-4PH,2.568 IN. MIN 2.569 IN. MAX DIA,1.070IN. MIN 1.110 IN. MAX H,4 HOLES 0.116IN. MIN 0.121 IN. MAX DIA,EQUALLY SPACED ON 1.500 IN. DIA,2 HOLES 0.157IN. MIN 0.158 IN. MAX DIA THRU 2 WALLS IN. 2 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.