The Chain Assembly,valve, cataloged under National Stock Number 1660-01-244-5423, 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 Conax Florida Corporation. Government technical data includes 2 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through both NSN and commercial part number lookups. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 1660-01-244-5423 |
| Primary Part Number | 7520020-201 |
| Item Name | Chain Assembly,valve |
| FSC / FSG | 1660 / 16 — Aircraft Air Conditioning, Heating, and Pressurizing Equipment |
| Manufacturer | Conax Florida Corporation |
| Status | ACTIVE |
| FSC Application Data | VALVE,FILLER 1660011796780 |
| General Characteristics Item Description | BRASS WITH CHROME PLATING; APPROX 4.500 IN. LG; NO. 6 CHAIN 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 |
|---|---|
| 7520020-201 PRIMARY | Conax Florida Corporation (USA) |
| Reference | Meaning |
|---|---|
| 7520020-201 | 5/9 Secondary reference American Safety Flight Systems Inc |
| 8148650 | A/1 Packaging identification reference U.S. Government activity |
NSN 1660-01-244-5423 is a Chain Assembly,valve, manufactured by Conax Florida Corporation, classified under FSC 1660, Aircraft Air Conditioning, Heating, and Pressurizing Equipment. Status: active.
NSN 1660-01-244-5423 has 1 manufacturer part number on file: 7520020-201 (Conax Florida Corporation).
Key specifications for 7520020-201: FSC Application Data: VALVE,FILLER 1660011796780; General Characteristics Item Description: BRASS WITH CHROME PLATING; APPROX 4.500 IN. LG; NO. 6 CHAIN IN; End Item Identification: B-1B AIRCRAFT. 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.