PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

MS3397-17Indicator,humidity,plug

Military Standards Promulgated by Military Departments Under Authority of Defense Standardization Manual 4120 3-M · NSN 6685-00-641-6800 · FSC 6685 · No Item Name Available
Verified by PartsTable
NSN 6685-00-641-6800 — this item is cataloged by the U.S. Government under National Stock Number 6685-00-641-6800. Primary manufacturer part number: MS3397-17.
Features
  • Indicator,humidity,plug — FSC 6685
  • Nominal Thread Size: 0.750 INCHES SINGLE END IN
  • Nondefinitive Spec/std Data: II TYPE
  • Thread Quantity Per Inch: 14 SINGLE END
  • Features Provided: REFILLABLE
  • Minimum Desiccant Capacity: 20.0 GRAMS G
  • Thread Direction: RIGHT-HAND SINGLE END
  • 3 verified cross-references
Applications
  • Industrial maintenance and repair
  • Government and military logistics
  • Equipment overhaul and refurbishment
General Description

The Indicator,humidity,plug, cataloged under National Stock Number 6685-00-641-6800, is classified within Federal Supply Class 6685 (No Item Name Available) of the Instruments and Laboratory Equipment group. The primary manufacturer of record is Military Standards Promulgated by Military Departments Under Authority of Defense Standardization Manual 4120 3-M. Government technical data includes 6 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 3 commercial cross-references from 3 manufacturers, enabling identification through both NSN and commercial part number lookups. 2 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.

Technical Specifications
ParameterValue
NSN6685-00-641-6800
Primary Part NumberMS3397-17
Item NameIndicator,humidity,plug
FSC / FSG6685 / 66 — No Item Name Available
ManufacturerMilitary Standards Promulgated by Military Departments Under Authority of Defense Standardization Manual 4120 3-M
StatusACTIVE
Nominal Thread Size0.750 INCHES SINGLE END IN
Nondefinitive Spec/std DataII TYPE
Thread Quantity Per Inch14 SINGLE END
Features ProvidedREFILLABLE
Minimum Desiccant Capacity20.0 GRAMS G
Thread DirectionRIGHT-HAND SINGLE END
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 2
6685-00-526-8414 INTERCHANGEABLE
Indicator,humidity,plug
6685-00-641-6126 INTERCHANGEABLE
Indicator,humidity,plug
Cross-Reference Index
Part NumberManufacturer
MS3397-17 Military Standards Promulgated by Military Departments Under Authority of Defense Standardization Manual 4120 3-M
MILP6131 Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M
115 Driaire Inc (USA)
Related Parts
6685-00-526-8414INTERCHANGEABLE
INDICATOR,HUMIDITY,PLUG
6685-00-641-6126INTERCHANGEABLE
INDICATOR,HUMIDITY,PLUG

Frequently Asked Questions

What is NSN 6685-00-641-6800?

NSN 6685-00-641-6800 is a Indicator,humidity,plug, manufactured by Military Standards Promulgated by Military Departments Under Authority of Defense Standardization Manual 4120 3-M, classified under FSC 6685 (No Item Name Available). Status: active.

What are the part numbers for NSN 6685-00-641-6800?

NSN 6685-00-641-6800 has 3 cross-referenced part numbers: MS3397-17 (Military Standards Promulgated by Military Departments Under Authority of Defense Standardization Manual 4120 3-M), MILP6131 (Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M), 115 (Driaire Inc).

What NSN replaces 6685-00-641-6800?

There are 2 known substitutes for 6685-00-641-6800: 6685-00-526-8414, 6685-00-641-6126. Verify interchangeability with system specifications before substitution.

What are the specifications of MS3397-17?

Key specifications for MS3397-17: Nominal Thread Size: 0.750 INCHES SINGLE END IN; Nondefinitive Spec/std Data: II TYPE; Thread Quantity Per Inch: 14 SINGLE END; Features Provided: REFILLABLE. 7 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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