PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

30009Thermostat Assembly

Hdt Expeditionary Systems Inc · NSN 6685-01-078-4850 · FSC 6685 · No Item Name Available
Verified by PartsTable
NSN 6685-01-078-4850 — this item is cataloged by the U.S. Government under National Stock Number 6685-01-078-4850. Primary manufacturer part number: 30009.
Features
  • Thermostat Assembly — FSC 6685
  • 3 verified cross-references
  • Primary manufacturer: Hdt Expeditionary Systems Inc
Applications
  • Industrial maintenance and repair
  • Government and military logistics
  • Equipment overhaul and refurbishment
General Description

The Thermostat Assembly, cataloged under National Stock Number 6685-01-078-4850, is classified within Federal Supply Class 6685 (No Item Name Available) of the Instruments and Laboratory Equipment group. The primary manufacturer of record is Hdt Expeditionary Systems Inc. This item has 3 commercial cross-references from 3 manufacturers, enabling identification through both NSN and commercial part number lookups. 12 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.

Technical Specifications
ParameterValue
NSN6685-01-078-4850
Primary Part Number30009
Item NameThermostat Assembly
FSC / FSG6685 / 66 — No Item Name Available
ManufacturerHdt Expeditionary Systems Inc
StatusACTIVE
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 12
3110-00-100-055326283 INTERCHANGEABLE
Cup,tapered Roller Bearing
The Timken Corporation
1560-00-123-10925115224-9 INTERCHANGEABLE
Transition Assembly
The Boeing Company
6150-00-229-1418 INTERCHANGEABLE
Cable Assembly,special Purpose,e
5133-00-236-20490828 INTERCHANGEABLE
Drill,masonry,hand
Vasco Inc
5120-00-293-048230009 INTERCHANGEABLE
Caulking Tool,hand
Mephisto Tool Co Inc
6650-00-421-530030009 INTERCHANGEABLE
Magnifier
Edmund Optics, Inc
5365-00-484-1936 INTERCHANGEABLE
Plug,machine Thread
5360-00-677-836330009 INTERCHANGEABLE
Spring,helical,compression
Triumph Thermal Systems - Maryland, Inc.
5330-00-764-525930009 INTERCHANGEABLE
Gasket
Trw Inc Trw Commercial Steering Div
3439-01-009-6255SN96WRAP3 0.062 1LB INTERCHANGEABLE
Solder,tin Alloy
American Society for Testing and Materials Dba Astm International
Cross-Reference Index
Part NumberManufacturer
30009 Hdt Expeditionary Systems Inc (USA)
30009 Engineered Air Systems, Inc. Dba Drs Sustainment Systems (USA)
30009 Drs Environmental Systems Inc (USA)
Related Parts
3110-00-100-0553INTERCHANGEABLE
CUP,TAPERED ROLLER BEARING
26283
1560-00-123-1092INTERCHANGEABLE
TRANSITION ASSEMBLY
5115224-9
6150-00-229-1418INTERCHANGEABLE
CABLE ASSEMBLY,SPECIAL PURPOSE,E
5133-00-236-2049INTERCHANGEABLE
DRILL,MASONRY,HAND
0828
5120-00-293-0482INTERCHANGEABLE
CAULKING TOOL,HAND
30009
6650-00-421-5300INTERCHANGEABLE
MAGNIFIER
30009
5365-00-484-1936INTERCHANGEABLE
PLUG,MACHINE THREAD
5360-00-677-8363INTERCHANGEABLE
SPRING,HELICAL,COMPRESSION
30009
5330-00-764-5259INTERCHANGEABLE
GASKET
30009
3439-01-009-6255INTERCHANGEABLE
SOLDER,TIN ALLOY
SN96WRAP3 0.062 1LB
4720-01-118-6088INTERCHANGEABLE
HOSE ASSEMBLY,METALLIC
6685-01-160-7313INTERCHANGEABLE
THERMOSTAT,FLOW CONTROL
30009

Frequently Asked Questions

What is NSN 6685-01-078-4850?

NSN 6685-01-078-4850 is a Thermostat Assembly, manufactured by Hdt Expeditionary Systems Inc, classified under FSC 6685 (No Item Name Available). Status: active.

What are the part numbers for NSN 6685-01-078-4850?

NSN 6685-01-078-4850 has 3 cross-referenced part numbers: 30009 (Hdt Expeditionary Systems Inc), 30009 (Engineered Air Systems, Inc. Dba Drs Sustainment Systems), 30009 (Drs Environmental Systems Inc).

What NSN replaces 6685-01-078-4850?

There are 12 known substitutes for 6685-01-078-4850: 3110-00-100-0553, 1560-00-123-1092, 6150-00-229-1418 and 9 more. Verify interchangeability with system specifications before substitution.

What are the specifications of 30009?

Key specifications for 30009: End Item Identification: 4110-00-014-4646. 1 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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