PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

12SRadiacmeter

Ludlum Measurements Inc · NSN 6665-01-080-5450 · FSC 6665 · No Item Name Available
Verified by PartsTable
NSN 6665-01-080-5450 — this item is cataloged by the U.S. Government under National Stock Number 6665-01-080-5450. Primary manufacturer part number: 12S.
Features
  • Radiacmeter — FSC 6665
  • Carrying Case: NOT PROVIDED
  • Portability: PORTABLE
  • Surface Treatment: PAINT CASE
  • Mounting Method: PORTABLE
  • Indicator Type: METER
  • Material: ALUMINUM CASE
  • Voltage in Volts and Current Type: 2.5 DC
Applications
  • Applications requiring Aluminum Case construction
General Description

The Radiacmeter, cataloged under National Stock Number 6665-01-080-5450, is classified within Federal Supply Class 6665 (No Item Name Available) of the Instruments and Laboratory Equipment group. The primary manufacturer of record is Ludlum Measurements Inc. Government technical data includes 11 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 1 commercial cross-reference from 1 manufacturer, enabling identification through both NSN and commercial part number lookups. 12 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.

Technical Specifications
ParameterValue
NSN6665-01-080-5450
Primary Part Number12S
Item NameRadiacmeter
FSC / FSG6665 / 66 — No Item Name Available
ManufacturerLudlum Measurements Inc
StatusACTIVE
Carrying CaseNOT PROVIDED
PortabilityPORTABLE
Surface TreatmentPAINT CASE
Mounting MethodPORTABLE
Indicator TypeMETER
MaterialALUMINUM CASE
Voltage in Volts and Current Type2.5 DC
Features ProvidedINTERNAL BATTERY ACCOMMODATION
Radiation Type and FunctionGAMMA RAYS MEASURES
Detecting Element TypeSCINTILLATION
Radiation Range Per Hour+0.0 TO 3.0 MILLIROENTGENS
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 12
5340-00-050-1589 INTERCHANGEABLE
Plug,expansion
6210-00-056-06435-BS0 INTERCHANGEABLE
Fixture,lighting
Harvey Hubbell Inc
4810-00-062-2660 INTERCHANGEABLE
Valve,solenoid
5961-00-159-729812S INTERCHANGEABLE
Transistor
Lucent Technologies Inc Corporate Headquarters
4030-00-195-2561 INTERCHANGEABLE
Hook,chain,s
8135-00-239-53088135-00-239-5308 INTERCHANGEABLE
Seal,strapping
Independent Metal Strap Co Inc
4730-00-278-3905 INTERCHANGEABLE
Bushing,pipe
7045-00-702-276129-19224-00 INTERCHANGEABLE
Tape,skew,master
Compaq Federal Llc
5905-00-776-929312S INTERCHANGEABLE
Holder,resistor
Ohmite Holding, L.l.c. Dba Ohmite Manufacturing
6685-00-807-996612SG INTERCHANGEABLE
Dampener,fluid Pressure
Chemiquip Products Co Inc
Cross-Reference Index
Part NumberManufacturer
12S PRIMARY Ludlum Measurements Inc (USA)
Related Parts
5340-00-050-1589INTERCHANGEABLE
PLUG,EXPANSION
6210-00-056-0643INTERCHANGEABLE
FIXTURE,LIGHTING
5-BS0
4810-00-062-2660INTERCHANGEABLE
VALVE,SOLENOID
5961-00-159-7298INTERCHANGEABLE
TRANSISTOR
12S
4030-00-195-2561INTERCHANGEABLE
HOOK,CHAIN,S
8135-00-239-5308INTERCHANGEABLE
SEAL,STRAPPING
8135-00-239-5308
4730-00-278-3905INTERCHANGEABLE
BUSHING,PIPE
7045-00-702-2761INTERCHANGEABLE
TAPE,SKEW,MASTER
29-19224-00
5905-00-776-9293INTERCHANGEABLE
HOLDER,RESISTOR
12S
6685-00-807-9966INTERCHANGEABLE
DAMPENER,FLUID PRESSURE
12SG
5120-00-889-1788INTERCHANGEABLE
WRENCH,RATCHET
5905-01-086-2497INTERCHANGEABLE
RESISTOR,VARIABLE,NONWIRE WOUND,
1656-165

Frequently Asked Questions

What is NSN 6665-01-080-5450?

NSN 6665-01-080-5450 is a Radiacmeter, manufactured by Ludlum Measurements Inc, classified under FSC 6665 (No Item Name Available). Status: active.

What are the part numbers for NSN 6665-01-080-5450?

NSN 6665-01-080-5450 has 1 cross-referenced part number: 12S (Ludlum Measurements Inc).

What NSN replaces 6665-01-080-5450?

There are 12 known substitutes for 6665-01-080-5450: 5340-00-050-1589, 6210-00-056-0643, 4810-00-062-2660 and 9 more. Verify interchangeability with system specifications before substitution.

What are the specifications of 12S?

Key specifications for 12S: Carrying Case: NOT PROVIDED; Portability: PORTABLE; Special Features: BUILT-IN SPEAKER; Surface Treatment: PAINT CASE. 15 total characteristics are documented in the Federal Logistics Information System.

Validated with multiple authoritative sources, including Government, OEM, and Certified sources.
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