The Holder-Hanging Suspension Assemb, cataloged under National Stock Number 1660-00-322-0863, 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 Avox Systems Inc Dba Avox Systems Inc. Government technical data includes 2 specifications, 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through both NSN and commercial part number lookups. 3 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 2 items share a part number with this NSN in the catalog (possible match — not a government interchangeability claim). Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 1660-00-322-0863 |
| Primary Part Number | 358-643C |
| Item Name | Holder-Hanging Suspension Assemb |
| FSC / FSG | 1660 / 16 — Aircraft Air Conditioning, Heating, and Pressurizing Equipment |
| Manufacturer | Avox Systems Inc Dba Avox Systems Inc |
| Status | ACTIVE |
| FSC Application Data | MASK OXYGEN,ACFT |
| General Characteristics Item Description | C/O STRAP,SPRING,RIVET,EYELET,WASHER,CLAMP,NAME PLATE |
| 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 |
|---|---|
| 358-643C | Yama Manufacturing Incorporated (USA) |
| 358-643C PRIMARY | Avox Systems Inc Dba Avox Systems Inc (USA) |
| Reference | Meaning |
|---|---|
| 1660PL0965350 | 6/9 Informative reference only Jednolity Indeks Materialowy - Uniform Material Index |
| 358-643D | C/1 Advisory reference — outside the item-of-supply concept Avox Systems Inc Dba Avox Systems Inc |
| 358-643C | 5/9 Secondary reference Jeffery P Morin Dba Hillco Mfg. Co. |
NSN 1660-00-322-0863 is a Holder-Hanging Suspension Assemb, manufactured by Avox Systems Inc Dba Avox Systems Inc, classified under FSC 1660, Aircraft Air Conditioning, Heating, and Pressurizing Equipment. Status: active.
NSN 1660-00-322-0863 has 2 manufacturer part numbers on file: 358-643C (Yama Manufacturing Incorporated), 358-643C (Avox Systems Inc Dba Avox Systems Inc).
2 possible matches (shared part number, not a government interchangeability claim): 1560-01-223-9942, 1660-01-669-3987. Verify interchangeability with system specifications before substitution.
Key specifications for 358-643C: FSC Application Data: MASK OXYGEN,ACFT; General Characteristics Item Description: C/O STRAP,SPRING,RIVET,EYELET,WASHER,CLAMP,NAME PLATE. 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.