The Cover,valve, cataloged under National Stock Number 1660-00-227-9128, is classified within Federal Supply Class 1660 (Aircraft Air Conditioning, Heating, and Pressurizing Equipment) of the Aircraft Components and Accessories group. The manufacturer of record is Honeywell International, Inc Div Aerospace-Tucson. Government technical data includes 1 specification, 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 1660-00-227-9128 |
| Primary Part Number | 139742-1 |
| Item Name | Cover,valve |
| FSC / FSG | 1660 / 16 — Aircraft Air Conditioning, Heating, and Pressurizing Equipment |
| Manufacturer | Honeywell International, Inc Div Aerospace-Tucson |
| Status | ACTIVE |
| General Characteristics Item Description | 9.041-9.046 IN. DIA,1.100 IN. LG;8 HOLES 0.147 IN. DIA THROUGH CSINK 0.190 IN. DIA FOR 0.138-32UNF3B INSERT ON 8.3125 IN. DIA BC IN |
| 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 |
|---|---|
| 139742-1 PRIMARY | Honeywell International, Inc Div Aerospace-Tucson (USA) |
| 139742-1 | Aero International, Llc Dba Ams Engineered Solutions (USA) |
| Reference | Meaning |
|---|---|
| 139742-1 | 5/9 Secondary reference Honeywell International Inc. Div Aerospace - Torrance |
NSN 1660-00-227-9128 is a Cover,valve, manufactured by Honeywell International, Inc Div Aerospace-Tucson, classified under FSC 1660, Aircraft Air Conditioning, Heating, and Pressurizing Equipment. Status: active.
NSN 1660-00-227-9128 has 2 manufacturer part numbers on file: 139742-1 (Honeywell International, Inc Div Aerospace-Tucson), 139742-1 (Aero International, Llc Dba Ams Engineered Solutions).
Key specifications for 139742-1: General Characteristics Item Description: 9.041-9.046 IN. DIA,1.100 IN. LG;8 HOLES 0.147 IN. DIA THROUGH CSINK 0.190 IN. DIA FOR 0.138-32UNF3B INSERT ON 8.3125 IN. DIA BC IN. 1 specification is 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 1660-00-227-9128 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.