The Ring,control Rate,regulator, cataloged under National Stock Number 1660-01-044-1708, 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 1 manufacturer part number 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog.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 | 1660-01-044-1708 |
| Primary Part Number | 139647-1 |
| Item Name | Ring,control Rate,regulator |
| FSC / FSG | 1660 / 16 — Aircraft Air Conditioning, Heating, and Pressurizing Equipment |
| Manufacturer | Honeywell International, Inc Div Aerospace-Tucson |
| Status | ACTIVE |
| General Characteristics Item Description | ALUMINUM ALLOY QQ-A-250/11 6061-T6,ANODIZE PER MIL-A-8625 TYPE I,2.630 IN. MAX 2.610 IN. MIN OD DIA,1.880 IN. MAX 1.870 IN. MIN ID,6 HOLES 0.165 IN. MAX 0.160 IN. MIN DIA THRU ON 2.376 IN. DIA BC,0.068 IN. STOCK MAX 0.060 IN. MIN THK IN |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL B — Remove Demilitarization Key Points |
| Hazard | No hazard code in the DLA record (HMIC N) |
| Criticality Code | X |
| Part Number | Manufacturer |
|---|---|
| 139647-1 PRIMARY | Honeywell International, Inc Div Aerospace-Tucson (USA) |
| Reference | Meaning |
|---|---|
| 139647-1 | 5/9 Secondary reference Honeywell International Inc. Div Aerospace - Torrance |
NSN 1660-01-044-1708 is a Ring,control Rate,regulator, manufactured by Honeywell International, Inc Div Aerospace-Tucson, classified under FSC 1660, Aircraft Air Conditioning, Heating, and Pressurizing Equipment. Status: active.
NSN 1660-01-044-1708 has 1 manufacturer part number on file: 139647-1 (Honeywell International, Inc Div Aerospace-Tucson).
Key specifications for 139647-1: General Characteristics Item Description: ALUMINUM ALLOY QQ-A-250/11 6061-T6,ANODIZE PER MIL-A-8625 TYPE I,2.630 IN. MAX 2.610 IN. MIN OD DIA,1.880 IN. MAX 1.870 IN. MIN ID,6 HOLES 0.165 IN. MAX 0.160 IN. MIN DIA THRU ON 2.376 IN. DIA BC,0.068 IN. STOCK MAX 0.060 IN. MIN THK IN; End Item Identification: ACFT E3A P/O 1660010061601. 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 1660-01-044-1708 has DEMIL Code B. 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.