PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

4181-156Calibrator,thermometer

Hart Scientific Llc · NSN 6685-01-570-7336 · FSC 6685 · No Item Name Available
Verified by PartsTable
NSN 6685-01-570-7336 — this item is cataloged by the U.S. Government under National Stock Number 6685-01-570-7336. Primary manufacturer part number: 4181-156.
Features
  • Calibrator,thermometer — FSC 6685
  • Shape: RECTANGULAR
  • AC Voltage Rating: 115.0 VOLTS MINIMUM AND 230.0 VOLTS MAXIMUM
  • Frequency Rating: 50.0 HERTZ MINIMUM AND 60.0 HERTZ MAXIMUM
  • 1 verified cross-reference
  • Primary manufacturer: Hart Scientific Llc
Applications
  • Industrial maintenance and repair
  • Government and military logistics
  • Equipment overhaul and refurbishment
General Description

The Calibrator,thermometer, cataloged under National Stock Number 6685-01-570-7336, is classified within Federal Supply Class 6685 (No Item Name Available) of the Instruments and Laboratory Equipment group. The primary manufacturer of record is Hart Scientific Llc. Government technical data includes 3 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. 1 verified substitute exists in the FLIS interchangeability database. Current acquisition status: Active.

Technical Specifications
ParameterValue
NSN6685-01-570-7336
Primary Part Number4181-156
Item NameCalibrator,thermometer
FSC / FSG6685 / 66 — No Item Name Available
ManufacturerHart Scientific Llc
StatusACTIVE
ShapeRECTANGULAR
AC Voltage Rating115.0 VOLTS MINIMUM AND 230.0 VOLTS MAXIMUM
Frequency Rating50.0 HERTZ MINIMUM AND 60.0 HERTZ MAXIMUM
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 1
6685-01-624-54894181-156 INTERCHANGEABLE
Calibrator,thermometer
Fluke Electronics Corp
Cross-Reference Index
Part NumberManufacturer
4181-156 PRIMARY Hart Scientific Llc (USA)
Related Parts
6685-01-624-5489INTERCHANGEABLE
CALIBRATOR,THERMOMETER
4181-156

Frequently Asked Questions

What is NSN 6685-01-570-7336?

NSN 6685-01-570-7336 is a Calibrator,thermometer, manufactured by Hart Scientific Llc, classified under FSC 6685 (No Item Name Available). Status: active.

What are the part numbers for NSN 6685-01-570-7336?

NSN 6685-01-570-7336 has 1 cross-referenced part number: 4181-156 (Hart Scientific Llc).

What NSN replaces 6685-01-570-7336?

There is 1 known substitute for 6685-01-570-7336: 6685-01-624-5489. Verify interchangeability with system specifications before substitution.

What are the specifications of 4181-156?

Key specifications for 4181-156: Overall Height: 356.0 MILLIMETERS NOMINAL MM; Shape: RECTANGULAR; Special Features: FAST, PORTABLE AND EASY TO USE; CALIBRATION SOLUTIONS FROM 15 DEGREE C TO 500 DEGREES C; RADIOMETRICALLY CALIBRATED FOR TRACEABLE AND CONSISTENT RESULTS; AC Voltage Rating: 115.0 VOLTS MINIMUM AND 230.0 VOLTS MAXIMUM. 8 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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