PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

568109Indicator,humidity,plug

Stewart-Warner Corporation · NSN 6685-00-526-8414 · FSC 6685 · No Item Name Available
Verified by PartsTable
NSN 6685-00-526-8414 — this item is cataloged by the U.S. Government under National Stock Number 6685-00-526-8414. Primary manufacturer part number: 568109.
Features
  • Indicator,humidity,plug — FSC 6685
  • Minimum Desiccant Capacity: 6.0 GRAMS G
  • Thread Quantity Per Inch: 18 SINGLE END
  • Width Across Flats: 1.000 INCHES NOMINAL IN
  • Nominal Thread Size: 1.5 MILLIMETERS SINGLE END MM
  • Thread Series Designator: STUB ACME M1 SINGLE END
  • End Connection Type: THREADED EXTERNAL, GASKET SEAL SINGLE END
  • Desiccant Spot Humidity Percentage: 80.0
Applications
  • Industrial maintenance and repair
  • Government and military logistics
  • Equipment overhaul and refurbishment
General Description

The Indicator,humidity,plug, cataloged under National Stock Number 6685-00-526-8414, is classified within Federal Supply Class 6685 (No Item Name Available) of the Instruments and Laboratory Equipment group. The primary manufacturer of record is Stewart-Warner Corporation. Government technical data includes 10 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 23 commercial cross-references from 15 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
NSN6685-00-526-8414
Primary Part Number568109
Item NameIndicator,humidity,plug
FSC / FSG6685 / 66 — No Item Name Available
ManufacturerStewart-Warner Corporation
StatusCANCELLED
Minimum Desiccant Capacity6.0 GRAMS G
Thread Quantity Per Inch18 SINGLE END
Width Across Flats1.000 INCHES NOMINAL IN
Nominal Thread Size1.5 MILLIMETERS SINGLE END MM
Thread Series DesignatorSTUB ACME M1 SINGLE END
End Connection TypeTHREADED EXTERNAL, GASKET SEAL SINGLE END
Desiccant Spot Humidity Percentage80.0
Thread DirectionRIGHT-HAND SINGLE END
Style DesignatorENGINE CYLINDER PLUG
Nondefinitive Spec/std Data1 SERIES
Lifecycle & Compliance
Acquisition StatusCANCELLED
HAZMATNo
Verified Substitutes 12
5950-00-004-0224986069-1 INTERCHANGEABLE
Reactor
Raytheon Company Dba Raytheon
5310-00-014-585521NE-066 INTERCHANGEABLE
Nut,self-Locking,hexagon
Esna, Llc
5360-00-015-2277DS-934400 INTERCHANGEABLE
Spring,helical,compression
Eaton Aerospace, Llc Dba Jackson South
4820-00-036-164213152 INTERCHANGEABLE
Stem,valve
Leslie Controls, Inc. Dba Leslie Controls Inc
5305-00-043-6665 INTERCHANGEABLE
Screw,machine
3110-00-100-600915118-15250 INTERCHANGEABLE
Bearing,roller,tapered
Federal-Mogul Corp Government Sales Dept
2590-00-123-71901315-2 INTERCHANGEABLE
Cap,filler Opening
Snyder Tank Corp
5315-00-124-25830323006-01 INTERCHANGEABLE
Pin,shoulder,headless
Aircraft Instruments Co
3110-00-144-86690210591 INTERCHANGEABLE
Bearing,ball,annular
Agco Corp Parts Opn
3040-00-162-6564 INTERCHANGEABLE
Shaft,straight
Cross-Reference Index
Part NumberManufacturer
568109 Stewart-Warner Corporation (USA)
L587 Dar Electronics Inc Commercial Products Div Dba National Radio Co (USA)
MS27215-1 Dresser-Argus, Inc Dba Dresser Argus Inc (USA)
4231 Triumph Engine Control Systems Llc (USA)
6328 Triumph Engine Control Systems Llc (USA)
MS27215-1 Military Standards Promulgated by Military Departments Under Authority of Defense Standardization Manual 4120 3-M
6685PL0917624 Jednolity Indeks Materialowy - Uniform Material Index (POL)
6056-1 Triumph Engine Control Systems Llc (USA)
1176 Triumph Engine Control Systems Llc (USA)
838626 Lockheed Martin Corporation Div Rms - Mitchel Field (USA)
MIL-P-6131 TYPE 1 Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M
157619 Pratt & Whitney Canada Corp Div Pratt & Whitney Canada Corp. (CAN)
AN4062-1A Air Force-Navy Aeronautical Specifications Promulgated by Aeronautical Standards Group
MIL-P-6131 Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M
AN4062-1 Air Force-Navy Aeronautical Specifications Promulgated by Aeronautical Standards Group
6Z3548-2 Bae Systems Information and Electronic Systems Integration Inc. (USA)
100 Clark Metal Products Inc (USA)
L587 Viking Technologies, Ltd. (USA)
100 Driaire Inc (USA)
255 Driaire Inc (USA)
Related Parts
5950-00-004-0224INTERCHANGEABLE
REACTOR
986069-1
5310-00-014-5855INTERCHANGEABLE
NUT,SELF-LOCKING,HEXAGON
21NE-066
5360-00-015-2277INTERCHANGEABLE
SPRING,HELICAL,COMPRESSION
DS-934400
4820-00-036-1642INTERCHANGEABLE
STEM,VALVE
13152
5305-00-043-6665INTERCHANGEABLE
SCREW,MACHINE
3110-00-100-6009INTERCHANGEABLE
BEARING,ROLLER,TAPERED
15118-15250
2590-00-123-7190INTERCHANGEABLE
CAP,FILLER OPENING
1315-2
5315-00-124-2583INTERCHANGEABLE
PIN,SHOULDER,HEADLESS
0323006-01
3110-00-144-8669INTERCHANGEABLE
BEARING,BALL,ANNULAR
0210591
3040-00-162-6564INTERCHANGEABLE
SHAFT,STRAIGHT
5935-00-204-8317INTERCHANGEABLE
JACK,TIP
53-265-2
8345-00-233-2961INTERCHANGEABLE
FLAG,NATIONAL

Frequently Asked Questions

What is NSN 6685-00-526-8414?

NSN 6685-00-526-8414 is a Indicator,humidity,plug, manufactured by Stewart-Warner Corporation, classified under FSC 6685 (No Item Name Available). Status: cancelled.

What are the part numbers for NSN 6685-00-526-8414?

NSN 6685-00-526-8414 has 23 cross-referenced part numbers: 568109 (Stewart-Warner Corporation), L587 (Dar Electronics Inc Commercial Products Div Dba National Radio Co), MS27215-1 (Dresser-Argus, Inc Dba Dresser Argus Inc), 4231 (Triumph Engine Control Systems Llc), 6328 (Triumph Engine Control Systems Llc) and 18 more.

What NSN replaces 6685-00-526-8414?

There are 12 known substitutes for 6685-00-526-8414: 5950-00-004-0224, 5310-00-014-5855, 5360-00-015-2277 and 9 more. Verify interchangeability with system specifications before substitution.

What are the specifications of 568109?

Key specifications for 568109: Minimum Desiccant Capacity: 6.0 GRAMS G; Thread Quantity Per Inch: 18 SINGLE END; Width Across Flats: 1.000 INCHES NOMINAL IN; Nominal Thread Size: 1.5 MILLIMETERS SINGLE END MM. 11 total characteristics are documented in the Federal Logistics Information System.

Is NSN 6685-00-526-8414 still in active supply?

NSN 6685-00-526-8414 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.
PartsTable Design LLC · partstable.com