The Test Set,automatic Smoke Alarm, cataloged under National Stock Number 6635-01-678-5940, is classified within Federal Supply Class 6635 (Physical Properties Testing and Inspection) of the Instruments and Laboratory Equipment group. The manufacturer of record is Regin Hvac Products, Inc.. The record lists 2 manufacturer part numbers for this item, enabling identification through both NSN and commercial part number lookups. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 6635-01-678-5940 |
| Primary Part Number | S220 |
| Item Name | Test Set,automatic Smoke Alarm |
| FSC / FSG | 6635 / 66 — Physical Properties Testing and Inspection |
| Manufacturer | Regin Hvac Products, Inc. |
| Status | ACTIVE |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL A — No Demilitarization Required |
| Hazard | No hazard code in the DLA record (HMIC N) |
| Criticality Code | X |
NSN 6635-01-678-5940 is a Test Set,automatic Smoke Alarm, manufactured by Regin Hvac Products, Inc., classified under FSC 6635, Physical Properties Testing and Inspection. Status: active.
NSN 6635-01-678-5940 has 2 manufacturer part numbers on file: 4101T5 (Mcmaster-Carr Supply Co), S220 (Regin Hvac Products, Inc.).
Key specifications for S220: Special Features: KIT CONTAINS: 1 SMOKE PEN, 6 WICKS WHICH WILL PROVIDE UP TO 3 HOURS OF SMOKE OR 60 INDIVIDUAL 30 SECOND TESTS;; Part Name Assigned by Controlling Agency: REGIN SMOKE PEN; End Item Identification: SMOKE TESTING. 0 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.