The Cap,vent,lox, cataloged under National Stock Number 1660-01-175-3973, 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 Essex Industries, Inc. Dba Essex Industries. 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through both NSN and commercial part number lookups. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 1660-01-175-3973 |
| Primary Part Number | 50C-0020-1 |
| Item Name | Cap,vent,lox |
| FSC / FSG | 1660 / 16 — Aircraft Air Conditioning, Heating, and Pressurizing Equipment |
| Manufacturer | Essex Industries, Inc. Dba Essex Industries |
| Status | ACTIVE |
| General Characteristics Item Description | MODIFIED FROM MS27566 CAP ASSEMBLY;SPRING LOADED SEAL;U/O FILL,VENT,AND BUILDUP VALVE |
| 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 |
|---|---|
| 50C-0020-1 | Saab Australia Pty Ltd (AUS) |
| 50C-0020-1 PRIMARY | Essex Industries, Inc. Dba Essex Industries (USA) |
| Reference | Meaning |
|---|---|
| 8148650 | A/1 Packaging identification reference U.S. Government activity |
| 1660PL1143176 | 6/9 Informative reference only Jednolity Indeks Materialowy - Uniform Material Index |
NSN 1660-01-175-3973 is a Cap,vent,lox, manufactured by Essex Industries, Inc. Dba Essex Industries, classified under FSC 1660, Aircraft Air Conditioning, Heating, and Pressurizing Equipment. Status: active.
NSN 1660-01-175-3973 has 2 manufacturer part numbers on file: 50C-0020-1 (Saab Australia Pty Ltd), 50C-0020-1 (Essex Industries, Inc. Dba Essex Industries).
Key specifications for 50C-0020-1: General Characteristics Item Description: MODIFIED FROM MS27566 CAP ASSEMBLY;SPRING LOADED SEAL;U/O FILL,VENT,AND BUILDUP VALVE. 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 1660-01-175-3973 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.