The Pcb,muffle Furnace,, cataloged under National Stock Number 5999-01-421-5653, is classified within Federal Supply Class 5999 (Miscellaneous Electrical and Electronic Components) of the Electrical and Electronic Equipment Components group. The manufacturer of record is Air Techniques, Inc.. 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through both NSN and commercial part number lookups. 3 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active. Unit of issue: EA.
| Parameter | Value |
|---|---|
| NSN | 5999-01-421-5653 |
| Primary Part Number | 18440-1 |
| Item Name | Pcb,muffle Furnace, |
| FSC / FSG | 5999 / 59 — Miscellaneous Electrical and Electronic Components |
| Manufacturer | Air Techniques, Inc. |
| Status | ACTIVE |
| General Characteristics Item Description | NO TECH REVIEW OR CHARACTERISTICS DATA |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL A — No Demilitarization Required |
| Hazard | Possible hazard — SDS may be required (DLA HMIC P) |
| Shelf Life Code | 0 |
| Criticality Code | X |
| Unit of Issue | EA |
| Acquisition advice code | L |
| Part Number | Manufacturer |
|---|---|
| 18440-1 PRIMARY | Air Techniques, Inc. (USA) |
| Reference | Meaning |
|---|---|
| 18440-1 | 5/2 Secondary reference U.S. Government activity |
| NAVY 1993 3281 | 5/1 Secondary reference U.S. Government activity |
| LLH409348 | 5/1 Secondary reference Naval Medical Material Support Command Detachment |
NSN 5999-01-421-5653 is a Pcb,muffle Furnace,, manufactured by Air Techniques, Inc., classified under FSC 5999, Miscellaneous Electrical and Electronic Components. Status: active.
NSN 5999-01-421-5653 has 1 manufacturer part number on file: 18440-1 (Air Techniques, Inc.).
Key specifications for 18440-1: General Characteristics Item Description: NO TECH REVIEW OR CHARACTERISTICS DATA. 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.