The Valve Assembly,environmental Con, cataloged under National Stock Number 1660-01-167-8682, 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 Hamilton Sundstrand Corporation Dba Collins Aerospace. Government technical data includes 1 specification, cited from the U.S. Government catalog. The record lists 3 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog.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 | 1660-01-167-8682 |
| Primary Part Number | 784620-1 |
| Item Name | Valve Assembly,environmental Con |
| FSC / FSG | 1660 / 16 — Aircraft Air Conditioning, Heating, and Pressurizing Equipment |
| Manufacturer | Hamilton Sundstrand Corporation Dba Collins Aerospace |
| Status | ACTIVE |
| General Characteristics Item Description | C/O 1 INSULATOR,HEAT;4 NUT SLF-LKG;4 SHIM;1 SEAL,SPRING RING;1 ACTUATOR;2 RIVET;2 SCREW;2 WASHER;1 DISC-AIR VALVE;2 RING,SEAL;1 HOUSING;2 BUSHING;1 HOUSING,VALVE;1 SHAFT;1 STOP,SHAFT;8.050 IN. HGT BY 5.070 IN. LG BY 3.270 IN. THK O/A 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 |
|---|---|
| 784620-1 PRIMARY | Hamilton Sundstrand Corporation Dba Collins Aerospace (USA) |
| 784620-2 PRIMARY | Hamilton Sundstrand Corporation Dba Collins Aerospace (USA) |
| 773680-4 PRIMARY | Hamilton Sundstrand Corporation (USA) |
| Reference | Meaning |
|---|---|
| 10-30756-5 | 1/2 Source control — Government-approved source U.S. Government activity |
NSN 1660-01-167-8682 is a Valve Assembly,environmental Con, manufactured by Hamilton Sundstrand Corporation Dba Collins Aerospace, classified under FSC 1660, Aircraft Air Conditioning, Heating, and Pressurizing Equipment. Status: active.
NSN 1660-01-167-8682 has 3 manufacturer part numbers on file: 784620-1 (Hamilton Sundstrand Corporation Dba Collins Aerospace), 784620-2 (Hamilton Sundstrand Corporation Dba Collins Aerospace), 773680-4 (Hamilton Sundstrand Corporation).
Key specifications for 784620-1: General Characteristics Item Description: C/O 1 INSULATOR,HEAT;4 NUT SLF-LKG;4 SHIM;1 SEAL,SPRING RING;1 ACTUATOR;2 RIVET;2 SCREW;2 WASHER;1 DISC-AIR VALVE;2 RING,SEAL;1 HOUSING;2 BUSHING;1 HOUSING,VALVE;1 SHAFT;1 STOP,SHAFT;8.050 IN. HGT BY 5.070 IN. LG BY 3.270 IN. THK O/A IN; End Item Identification: B-52G/H G. 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 1660-01-167-8682 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.