PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

AN4061-12Indicator,humidity,plug

Air Force-Navy Aeronautical Specifications Promulgated by Aeronautical Standards Group · NSN 6685-00-641-6126 · FSC 6685 · No Item Name Available
Verified by PartsTable
NSN 6685-00-641-6126 — this item is cataloged by the U.S. Government under National Stock Number 6685-00-641-6126. Primary manufacturer part number: AN4061-12.
Features
  • Indicator,humidity,plug — FSC 6685
  • Thread Direction: RIGHT-HAND SINGLE END
  • Thread Series Designator: UNS SINGLE END
  • Nominal Thread Size: 1.000 INCHES SINGLE END IN
  • Nondefinitive Spec/std Data: 2 TYPE
  • Thread Quantity Per Inch: 18 SINGLE END
  • Minimum Desiccant Capacity: 20.0 GRAMS G
  • Features Provided: REFILLABLE
Applications
  • Industrial maintenance and repair
  • Government and military logistics
  • Equipment overhaul and refurbishment
General Description

The Indicator,humidity,plug, cataloged under National Stock Number 6685-00-641-6126, is classified within Federal Supply Class 6685 (No Item Name Available) of the Instruments and Laboratory Equipment group. The primary manufacturer of record is Air Force-Navy Aeronautical Specifications Promulgated by Aeronautical Standards Group. Government technical data includes 7 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 6 commercial cross-references from 5 manufacturers, enabling identification through both NSN and commercial part number lookups. 12 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Cancelled.

Technical Specifications
ParameterValue
NSN6685-00-641-6126
Primary Part NumberAN4061-12
Item NameIndicator,humidity,plug
FSC / FSG6685 / 66 — No Item Name Available
ManufacturerAir Force-Navy Aeronautical Specifications Promulgated by Aeronautical Standards Group
StatusCANCELLED
Thread DirectionRIGHT-HAND SINGLE END
Thread Series DesignatorUNS SINGLE END
Nominal Thread Size1.000 INCHES SINGLE END IN
Nondefinitive Spec/std Data2 TYPE
Thread Quantity Per Inch18 SINGLE END
Minimum Desiccant Capacity20.0 GRAMS G
Features ProvidedREFILLABLE
Lifecycle & Compliance
Acquisition StatusCANCELLED
HAZMATNo
Verified Substitutes 12
4820-00-036-04491781 INTERCHANGEABLE
Diaphragm,valve,flat
Imi Cash Valve Inc
5940-00-202-023717-2 INTERCHANGEABLE
Terminal Board
Cinch Connectivity Solutions Inc.
5120-00-293-0032 INTERCHANGEABLE
Pliers
3120-00-324-86581781 INTERCHANGEABLE
Bearing,sleeve
Thermo Electron Corporation Dba Iec Centrifuge Div Laboratory Equipment Divsion
6645-00-515-4348 INTERCHANGEABLE
Clock,panel
6685-00-526-8414 INTERCHANGEABLE
Indicator,humidity,plug
5940-00-636-60251382B INTERCHANGEABLE
Terminal Board
Birnbach Co Inc
6685-00-641-6800 INTERCHANGEABLE
Indicator,humidity,plug
4820-01-074-23973317508PC16 INTERCHANGEABLE
Stem,fluid Valve
Naval Sea Systems Command
4820-01-257-13951781 INTERCHANGEABLE
Rest,float,valve
Robert H Wager Co Inc
Cross-Reference Index
Part NumberManufacturer
AN4061-12 Air Force-Navy Aeronautical Specifications Promulgated by Aeronautical Standards Group
1781 Triumph Engine Control Systems Llc (USA)
AN4061-2 Air Force-Navy Aeronautical Specifications Promulgated by Aeronautical Standards Group
MS3397-12 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
AN4120-1 Aeronautical Standards Group Dept of Navy and Air Force (USA)
Related Parts
4820-00-036-0449INTERCHANGEABLE
DIAPHRAGM,VALVE,FLAT
1781
5940-00-202-0237INTERCHANGEABLE
TERMINAL BOARD
17-2
5120-00-293-0032INTERCHANGEABLE
PLIERS
3120-00-324-8658INTERCHANGEABLE
BEARING,SLEEVE
1781
6645-00-515-4348INTERCHANGEABLE
CLOCK,PANEL
6685-00-526-8414INTERCHANGEABLE
INDICATOR,HUMIDITY,PLUG
5940-00-636-6025INTERCHANGEABLE
TERMINAL BOARD
1382B
6685-00-641-6800INTERCHANGEABLE
INDICATOR,HUMIDITY,PLUG
4820-01-074-2397INTERCHANGEABLE
STEM,FLUID VALVE
3317508PC16
4820-01-257-1395INTERCHANGEABLE
REST,FLOAT,VALVE
1781
6640-01-302-2658INTERCHANGEABLE
BEARING,UPPER,CENTRIFUGE
1781
6740-01-382-8549INTERCHANGEABLE
ADAPTER,PHOTOGRAPHIC

Frequently Asked Questions

What is NSN 6685-00-641-6126?

NSN 6685-00-641-6126 is a Indicator,humidity,plug, manufactured by Air Force-Navy Aeronautical Specifications Promulgated by Aeronautical Standards Group, classified under FSC 6685 (No Item Name Available). Status: cancelled.

What are the part numbers for NSN 6685-00-641-6126?

NSN 6685-00-641-6126 has 6 cross-referenced part numbers: AN4061-12 (Air Force-Navy Aeronautical Specifications Promulgated by Aeronautical Standards Group), 1781 (Triumph Engine Control Systems Llc), AN4061-2 (Air Force-Navy Aeronautical Specifications Promulgated by Aeronautical Standards Group), MS3397-12 (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) and 1 more.

What NSN replaces 6685-00-641-6126?

There are 12 known substitutes for 6685-00-641-6126: 4820-00-036-0449, 5940-00-202-0237, 5120-00-293-0032 and 9 more. Verify interchangeability with system specifications before substitution.

What are the specifications of AN4061-12?

Key specifications for AN4061-12: Thread Direction: RIGHT-HAND SINGLE END; Thread Series Designator: UNS SINGLE END; Nominal Thread Size: 1.000 INCHES SINGLE END IN; Nondefinitive Spec/std Data: 2 TYPE. 8 total characteristics are documented in the Federal Logistics Information System.

Is NSN 6685-00-641-6126 still in active supply?

NSN 6685-00-641-6126 is currently cancelled. Check with the Defense Logistics Agency for current availability and authorized substitutes.

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