The Radiac Set, cataloged under National Stock Number 6665-00-641-0228, is classified within Federal Supply Class 6665 (Hazard-detecting Instruments and Apparatus) of the Instruments and Laboratory Equipment group. Government technical data includes 22 specifications, cited from the U.S. Government catalog. 3 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 1 item shares a part number with this NSN in the catalog (possible match — not a government interchangeability claim). Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 6665-00-641-0228 |
| Item Name | Radiac Set |
| FSC / FSG | 6665 / 66 — Hazard-detecting Instruments and Apparatus |
| Status | ACTIVE |
| Indicator Type | AUDIO AND METER |
| Voltage in Volts and Current Type | 135.0 DC |
| Radiation Range Per Hour | +0.0 TO 500.0 MILLIROENTGENS |
| Accessory Identifying Number | CY-1296/PDR-27F TYPE NO. FIRST ACCESSORY |
| Accessory Identifying Number | DT-101/PDR-27F TYPE NO. SECOND ACCESSORY |
| Accessory Identifying Number | H43A/U TYPE NO. FOURTH ACCESSORY |
| Accessory Identifying Number | IM-85/PDR-27F TYPE NO. FIFTH ACCESSORY |
| Accessory Identifying Number | MX-1083B/PDR-27 TYPE NO. SIXTH ACCESSORY |
| Accessory Identifying Number | ST-125/PDR-27F TYPE NO. THIRD ACCESSORY |
| Detecting Element Type | GEIGER TUBE |
| Joint Electronics Type Designation System Item Type Number | TYPE NO. AN/PDR-27F |
| Joint Electronics Type Designation System Item Name | RADIAC SET |
| Features Provided | INTERNAL BATTERY ACCOMMODATION |
| Radiation Type and Function | BETA RAYS MEASURES AND GAMMA RAYS MEASURES |
| Accessory Controlling Agency | JETDS,JETDS,JETDS,JETDS,JETDS,JETDS |
| Furnished Items | RADIAC SET CASE,RADIAC DETECTOR,HARNESS,HEADSET,RADIACMETER,RADIOACTIVE TEST SAMPLE. |
| Accessory Component Quantity | 1 SECOND ACCESSORY |
| Accessory Component Quantity | 1 FOURTH ACCESSORY |
| Accessory Component Quantity | 1 FIRST ACCESSORY |
| Accessory Component Quantity | 1 FIFTH ACCESSORY |
| Accessory Component Quantity | 1 THIRD ACCESSORY |
| Accessory Component Quantity | 1 SIXTH ACCESSORY |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL Q — CCL Item — Commerce Control List |
| Hazard | Possible hazard — SDS may be required (DLA HMIC P) |
| Criticality Code | X |
| Reference | Meaning |
|---|---|
| ANPDR27F | 2/2 Government specification standardization U.S. Government activity |
| MILR15213 | 4/1 Identification reference U.S. Government activity |
| ANPDR27F | 5/1 Secondary reference U.S. Government activity |
NSN 6665-00-641-0228 is a Radiac Set, classified under FSC 6665, Hazard-detecting Instruments and Apparatus. Status: active.
1 possible match (shared part number, not a government interchangeability claim): 6665-00-663-8126. Verify interchangeability with system specifications before substitution.
Key specifications for 6665-00-641-0228: Indicator Type: AUDIO AND METER; Voltage in Volts and Current Type: 135.0 DC; Radiation Range Per Hour: +0.0 TO 500.0 MILLIROENTGENS; Accessory Identifying Number: CY-1296/PDR-27F TYPE NO. FIRST ACCESSORY. 22 specifications are 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.
NSN 6665-00-641-0228 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.