The Cup,ceramic, cataloged under National Stock Number 3439-00-443-9577, is classified within Federal Supply Class 3439 (Miscellaneous Welding, Soldering, and Brazing Supplies and Accessories) of the Metalworking Machinery (continued) group. The manufacturer of record is Weldcraft Customer Service. Government technical data includes 1 specification, cited from the U.S. Government catalog. The record lists 4 manufacturer part numbers for this item, enabling identification through both NSN and commercial part number lookups. 4 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 5 items share a part number with this NSN in the catalog (possible match — not a government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 | 3439-00-443-9577 |
| Primary Part Number | 105Z43 |
| Item Name | Cup,ceramic |
| FSC / FSG | 3439 / 34 — Miscellaneous Welding, Soldering, and Brazing Supplies and Accessories |
| Manufacturer | Weldcraft Customer Service |
| Status | ACTIVE |
| General Characteristics Item Description | 1-27/32 IN. LG; SIZE NO. 4; 1/4 IN. ORIFICE IN |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL A — No Demilitarization Required |
| Hazard | Possible hazard — SDS may be required (DLA HMIC P) |
| Criticality Code | X |
| Part Number | Manufacturer |
|---|---|
| 105Z43 | Associated Equipment Co, Inc Dba Profax Division (USA) |
| 105Z43 PRIMARY | Weldcraft Customer Service (USA) |
| 105Z43 | Cni Ceramic Nozzles Inc Dba Cni (USA) |
| 105Z43 | Worldwide Welding, Incorporated Div Lumax Lubrication Equipment (USA) |
| Reference | Meaning |
|---|---|
| 105Z43 | 5/9 Secondary reference Union Carbide Corp Sub of Dow Co the |
| 17184 | 5/9 Secondary reference Standard Welders Equipment Corporation |
| 105Z43 | 5/2 Secondary reference U.S. Government activity |
| 105Z43 | 5/9 Secondary reference L-Tec Welding and Cutting Systems |
NSN 3439-00-443-9577 is a Cup,ceramic, manufactured by Weldcraft Customer Service, classified under FSC 3439, Miscellaneous Welding, Soldering, and Brazing Supplies and Accessories. Status: active.
NSN 3439-00-443-9577 has 4 manufacturer part numbers on file: 105Z43 (Associated Equipment Co, Inc Dba Profax Division), 105Z43 (Weldcraft Customer Service), 105Z43 (Cni Ceramic Nozzles Inc Dba Cni), 105Z43 (Worldwide Welding, Incorporated Div Lumax Lubrication Equipment).
5 possible matches (shared part number, not a government interchangeability claim): 5950-00-648-2524, 4320-00-814-1501, 5998-01-297-6693. Verify interchangeability with system specifications before substitution.
Key specifications for 105Z43: General Characteristics Item Description: 1-27/32 IN. LG; SIZE NO. 4; 1/4 IN. ORIFICE IN; End Item Identification: LINDE MODEL HW-17,18,& 26 TORCHES. 1 specification is documented in the U.S. Government catalog.
Possible hazard — SDS may be required (DLA HMIC P). 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.