PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

47-1536Detector,radiac

Ludlum Measurements Inc · NSN 6665-01-599-7251 · FSC 6665 · No Item Name Available
Verified by PartsTable
NSN 6665-01-599-7251 — this item is cataloged by the U.S. Government under National Stock Number 6665-01-599-7251. Primary manufacturer part number: 47-1536.
Features
  • Detector,radiac — FSC 6665
  • Overall Diameter: 1.800 INCHES NOMINAL IN
  • Detecting Element Detachability: DETACHABLE
  • Detecting Element Type: GEIGER-MUELLER TUBE
  • Voltage Rating: 900.0 VOLTS NOMINAL
  • Radiation Type and Function: ALPHA RAYS DETECTS AND BETA RAYS DETECTS AND GAMMA RAYS DETECTS
  • Material: ALUMINUM CASE
  • 4 verified cross-references
Applications
  • Applications requiring Aluminum Case construction
General Description

The Detector,radiac, cataloged under National Stock Number 6665-01-599-7251, 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 6 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 4 commercial cross-references from 4 manufacturers, enabling identification through both NSN and commercial part number lookups. 7 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.

Technical Specifications
ParameterValue
NSN6665-01-599-7251
Primary Part Number47-1536
Item NameDetector,radiac
FSC / FSG6665 / 66 — No Item Name Available
ManufacturerLudlum Measurements Inc
StatusACTIVE
Overall Diameter1.800 INCHES NOMINAL IN
Detecting Element DetachabilityDETACHABLE
Detecting Element TypeGEIGER-MUELLER TUBE
Voltage Rating900.0 VOLTS NOMINAL
Radiation Type and FunctionALPHA RAYS DETECTS AND BETA RAYS DETECTS AND GAMMA RAYS DETECTS
MaterialALUMINUM CASE
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 7
5315-00-109-781026532 INTERCHANGEABLE
Pin,spring
Dresser, Llc
5325-00-164-184726532 INTERCHANGEABLE
Ring,retaining
Parker-Hannifin Corporation Dba Control Systems Division
4720-00-488-64904283-111 INTERCHANGEABLE
Hose,preformed
Gates Corporation
5325-00-489-10501201-320-Z3C INTERCHANGEABLE
Stud,turnlock Fastener
Southco Inc
5330-00-730-2239 INTERCHANGEABLE
Seal,plain Encased
2840-00-919-6918471536 INTERCHANGEABLE
Tube Assy,oil Scave
Rtx Corporation Dba Pratt & Whitney Div Pratt &whitney
5365-01-587-109926-532 INTERCHANGEABLE
Bushing,sleeve
Goodrich Corporation Div Collins Aerospace, Landing Systems (wheels & Brakes)
Cross-Reference Index
Part NumberManufacturer
47-1536 PRIMARY Ludlum Measurements Inc (USA)
26532 Defense Logistics Agency Directorate of Medical Materiel Defense Supply Center Philadelphia (USA)
6665NCM116619 Defense Medical Standardization Board (USA)
47-1536 Dtect Innovation Pty. Limited (AUS)
Related Parts
5315-00-109-7810INTERCHANGEABLE
PIN,SPRING
26532
5325-00-164-1847INTERCHANGEABLE
RING,RETAINING
26532
4720-00-488-6490INTERCHANGEABLE
HOSE,PREFORMED
4283-111
5325-00-489-1050INTERCHANGEABLE
STUD,TURNLOCK FASTENER
1201-320-Z3C
5330-00-730-2239INTERCHANGEABLE
SEAL,PLAIN ENCASED
2840-00-919-6918INTERCHANGEABLE
TUBE ASSY,OIL SCAVE
471536
5365-01-587-1099INTERCHANGEABLE
BUSHING,SLEEVE
26-532

Frequently Asked Questions

What is NSN 6665-01-599-7251?

NSN 6665-01-599-7251 is a Detector,radiac, manufactured by Ludlum Measurements Inc, classified under FSC 6665 (No Item Name Available). Status: active.

What are the part numbers for NSN 6665-01-599-7251?

NSN 6665-01-599-7251 has 4 cross-referenced part numbers: 47-1536 (Ludlum Measurements Inc), 26532 (Defense Logistics Agency Directorate of Medical Materiel Defense Supply Center Philadelphia), 6665NCM116619 (Defense Medical Standardization Board), 47-1536 (Dtect Innovation Pty. Limited).

What NSN replaces 6665-01-599-7251?

There are 7 known substitutes for 6665-01-599-7251: 5315-00-109-7810, 5325-00-164-1847, 4720-00-488-6490 and 4 more. Verify interchangeability with system specifications before substitution.

What are the specifications of 47-1536?

Key specifications for 47-1536: Overall Length: 5.800 INCHES NOMINAL IN; Overall Diameter: 1.800 INCHES NOMINAL IN; Detecting Element Detachability: DETACHABLE; Detecting Element Type: GEIGER-MUELLER TUBE. 9 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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