PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

541RRadiacmeter

Heico Ohmite Llc Dba Ohmite Mfg Co Inc · NSN 6665-00-857-2534 · FSC 6665 · No Item Name Available
Verified by PartsTable
NSN 6665-00-857-2534 — this item is cataloged by the U.S. Government under National Stock Number 6665-00-857-2534. Primary manufacturer part number: 541R.
Features
  • Radiacmeter — FSC 6665
  • Detecting Element Type: IONIZATION CHAMBER
  • Portability: PORTABLE
  • Carrying Case: NOT PROVIDED
  • Indicator Type: DIRECT READING
  • Radiation Range Per Hour: +0.0 TO 200.0 MILLIROENTGENS
  • Radiation Type and Function: GAMMA RAYS MEASURES AND X-RAYS MEASURES
  • Energy Dependence Rating: +0.080 TO 2.000 MEV
Applications
  • Applications requiring Steel Corrosion Resisting Case construction
General Description

The Radiacmeter, cataloged under National Stock Number 6665-00-857-2534, is classified within Federal Supply Class 6665 (No Item Name Available) of the Instruments and Laboratory Equipment group. The primary manufacturer of record is Heico Ohmite Llc Dba Ohmite Mfg Co Inc. Government technical data includes 10 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. 3 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.

Technical Specifications
ParameterValue
NSN6665-00-857-2534
Primary Part Number541R
Item NameRadiacmeter
FSC / FSG6665 / 66 — No Item Name Available
ManufacturerHeico Ohmite Llc Dba Ohmite Mfg Co Inc
StatusACTIVE
Detecting Element TypeIONIZATION CHAMBER
PortabilityPORTABLE
Carrying CaseNOT PROVIDED
Indicator TypeDIRECT READING
Radiation Range Per Hour+0.0 TO 200.0 MILLIROENTGENS
Radiation Type and FunctionGAMMA RAYS MEASURES AND X-RAYS MEASURES
Energy Dependence Rating+0.080 TO 2.000 MEV
MaterialSTEEL CORROSION RESISTING CASE
Overall Diameter0.500 INCHES NOMINAL IN
Nondefinitive Spec/std DataIM-9PD TYPE
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 3
6220-00-299-5647504451 INTERCHANGEABLE
Light,marker,clearance
U S Army Tank Automotive Command Amsta-Im-Mm
6220-00-299-58321008229-2 INTERCHANGEABLE
Light,marker,clearance
Navair and Navsea Managed Original Design Activity Dwg Not Material/parts Supplier
3825-00-691-25240004-6-4A INTERCHANGEABLE
Shoe Moldboard Nose
Frink America Inc
Cross-Reference Index
Part NumberManufacturer
541R Heico Ohmite Llc Dba Ohmite Mfg Co Inc (USA)
Related Parts
6220-00-299-5647INTERCHANGEABLE
LIGHT,MARKER,CLEARANCE
504451
6220-00-299-5832INTERCHANGEABLE
LIGHT,MARKER,CLEARANCE
1008229-2
3825-00-691-2524INTERCHANGEABLE
SHOE MOLDBOARD NOSE
0004-6-4A

Frequently Asked Questions

What is NSN 6665-00-857-2534?

NSN 6665-00-857-2534 is a Radiacmeter, manufactured by Heico Ohmite Llc Dba Ohmite Mfg Co Inc, classified under FSC 6665 (No Item Name Available). Status: active.

What are the part numbers for NSN 6665-00-857-2534?

NSN 6665-00-857-2534 has 1 cross-referenced part number: 541R (Heico Ohmite Llc Dba Ohmite Mfg Co Inc).

What NSN replaces 6665-00-857-2534?

There are 3 known substitutes for 6665-00-857-2534: 6220-00-299-5647, 6220-00-299-5832, 3825-00-691-2524. Verify interchangeability with system specifications before substitution.

What are the specifications of 541R?

Key specifications for 541R: Detecting Element Type: IONIZATION CHAMBER; Portability: PORTABLE; Carrying Case: NOT PROVIDED; Indicator Type: DIRECT READING. 11 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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