PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

356-170Thermostat,flow Control

Standard-Thomson Corporation · NSN 6685-00-081-3150 · FSC 6685 · No Item Name Available
Verified by PartsTable
NSN 6685-00-081-3150 — this item is cataloged by the U.S. Government under National Stock Number 6685-00-081-3150. Primary manufacturer part number: 356-170.
Features
  • Thermostat,flow Control — FSC 6685
  • Thermostat Type: BIMETALLIC
  • Spring Operated Pressure Relief: NOT PROVIDED
  • Opening Temp Rating: 164.0 FAHRENHEIT MINIMUM AND 166.0 FAHRENHEIT MAXIMUM DEGF
  • Valve Travel Distance: 0.375 INCHES NOMINAL IN
  • Operating Temp Rating: 180.0 FAHRENHEIT NOMINAL DEGF
  • Usage Design: CONTROL ENGINE COOLANT TEMP
  • Distance Across Flats: 2.874 INCHES NOMINAL IN
Applications
  • Industrial maintenance and repair
  • Government and military logistics
  • Equipment overhaul and refurbishment
General Description

The Thermostat,flow Control, cataloged under National Stock Number 6685-00-081-3150, is classified within Federal Supply Class 6685 (No Item Name Available) of the Instruments and Laboratory Equipment group. The primary manufacturer of record is Standard-Thomson Corporation. Government technical data includes 9 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 8 commercial cross-references from 6 manufacturers, enabling identification through both NSN and commercial part number lookups. 9 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.

Technical Specifications
ParameterValue
NSN6685-00-081-3150
Primary Part Number356-170
Item NameThermostat,flow Control
FSC / FSG6685 / 66 — No Item Name Available
ManufacturerStandard-Thomson Corporation
StatusACTIVE
Thermostat TypeBIMETALLIC
Spring Operated Pressure ReliefNOT PROVIDED
Opening Temp Rating164.0 FAHRENHEIT MINIMUM AND 166.0 FAHRENHEIT MAXIMUM DEGF
Valve Travel Distance0.375 INCHES NOMINAL IN
Operating Temp Rating180.0 FAHRENHEIT NOMINAL DEGF
Usage DesignCONTROL ENGINE COOLANT TEMP
Distance Across Flats2.874 INCHES NOMINAL IN
Flow Control DeviceBY-PASS
Mounting MethodFLANGE
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 9
5935-00-149-5453261-11-06-010 INTERCHANGEABLE
Connector,receptacle,electrical
Cinch Connectivity Solutions Inc.
6685-00-215-19974A313-4 INTERCHANGEABLE
Thermostat,flow Control
Standard-Thomson Corporation
5360-00-236-8589B31777 INTERCHANGEABLE
Spring,helical,compression
Eaton Aerospace, Llc Dba Jackson South
5940-00-284-390931777 INTERCHANGEABLE
Terminal,lug
Te Connectivity Corporation
2915-00-397-4999452104 INTERCHANGEABLE
Seat,water Injection
Rtx Corporation Dba Pratt & Whitney Div Pratt &whitney
5985-00-496-124735849-7 INTERCHANGEABLE
Kit,flange,feed-Through
Andrew Llc
2590-00-696-05767A-12496 INTERCHANGEABLE
Cup,horn Wire Container
Fwd Seagrave Holdings Lp
5133-00-839-549731777 INTERCHANGEABLE
Drill,twist
New York Twist Drill Inc
7340-01-588-4647450170 INTERCHANGEABLE
Knife,slicing
Globe Food Equipment Company
Cross-Reference Index
Part NumberManufacturer
450-170 Schneider Electric Systems Usa Inc (USA)
4A356-7 Standard-Thomson Corporation (USA)
4L7615 Caterpillar Inc Div Caterpillar Defense (USA)
4L7615 Holt Bros (USA)
VD10172 Scovill Inc (USA)
VD101A-11 Scovill Inc (USA)
31777 Ideal Instruments Inc (USA)
356-170 PRIMARY Standard-Thomson Corporation (USA)
Related Parts
5935-00-149-5453INTERCHANGEABLE
CONNECTOR,RECEPTACLE,ELECTRICAL
261-11-06-010
6685-00-215-1997INTERCHANGEABLE
THERMOSTAT,FLOW CONTROL
4A313-4
5360-00-236-8589INTERCHANGEABLE
SPRING,HELICAL,COMPRESSION
B31777
5940-00-284-3909INTERCHANGEABLE
TERMINAL,LUG
31777
2915-00-397-4999INTERCHANGEABLE
SEAT,WATER INJECTION
452104
5985-00-496-1247INTERCHANGEABLE
KIT,FLANGE,FEED-THROUGH
35849-7
2590-00-696-0576INTERCHANGEABLE
CUP,HORN WIRE CONTAINER
7A-12496
5133-00-839-5497INTERCHANGEABLE
DRILL,TWIST
31777
7340-01-588-4647INTERCHANGEABLE
KNIFE,SLICING
450170

Frequently Asked Questions

What is NSN 6685-00-081-3150?

NSN 6685-00-081-3150 is a Thermostat,flow Control, manufactured by Standard-Thomson Corporation, classified under FSC 6685 (No Item Name Available). Status: active.

What are the part numbers for NSN 6685-00-081-3150?

NSN 6685-00-081-3150 has 8 cross-referenced part numbers: 450-170 (Schneider Electric Systems Usa Inc), 4A356-7 (Standard-Thomson Corporation), 4L7615 (Caterpillar Inc Div Caterpillar Defense), 4L7615 (Holt Bros), VD10172 (Scovill Inc) and 3 more.

What NSN replaces 6685-00-081-3150?

There are 9 known substitutes for 6685-00-081-3150: 5935-00-149-5453, 6685-00-215-1997, 5360-00-236-8589 and 6 more. Verify interchangeability with system specifications before substitution.

What are the specifications of 356-170?

Key specifications for 356-170: Thermostat Type: BIMETALLIC; Spring Operated Pressure Relief: NOT PROVIDED; Opening Temp Rating: 164.0 FAHRENHEIT MINIMUM AND 166.0 FAHRENHEIT MAXIMUM DEGF; Valve Travel Distance: 0.375 INCHES NOMINAL IN. 10 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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