PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

50158-17Thermostat,flow Control

Trac Regulator Co., Inc. Dba Trac Regulator Co Inc · NSN 6685-01-169-6678 · FSC 6685 · No Item Name Available
Verified by PartsTable
NSN 6685-01-169-6678 — this item is cataloged by the U.S. Government under National Stock Number 6685-01-169-6678. Primary manufacturer part number: 50158-17.
Features
  • Thermostat,flow Control — FSC 6685
  • 2 verified cross-references
  • Primary manufacturer: Trac Regulator Co., Inc. Dba Trac Regulator Co Inc
Applications
  • Industrial maintenance and repair
  • Government and military logistics
  • Equipment overhaul and refurbishment
General Description

The Thermostat,flow Control, cataloged under National Stock Number 6685-01-169-6678, is classified within Federal Supply Class 6685 (No Item Name Available) of the Instruments and Laboratory Equipment group. The primary manufacturer of record is Trac Regulator Co., Inc. Dba Trac Regulator Co Inc. This item has 2 commercial cross-references from 1 manufacturer, enabling identification through both NSN and commercial part number lookups. 12 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.

Catalog Facts
Item NameThermostat,flow Control
FSC / FSG6685 — No Item Name Available (FSG 66)
ManufacturersTrac Regulator Co., Inc. Dba Trac Regulator Co Inc (CAGE 55378)
Technical Specifications
ParameterValue
NSN6685-01-169-6678
Primary Part Number50158-17
Item NameThermostat,flow Control
FSC / FSG6685 / 66 — No Item Name Available
ManufacturerTrac Regulator Co., Inc. Dba Trac Regulator Co Inc
StatusACTIVE
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 12
5935-00-020-7979 INTERCHANGEABLE
Connector Body,receptacle,electr
5930-00-105-6450 INTERCHANGEABLE
Switch,pressure
5330-00-168-563050-1581-7 INTERCHANGEABLE
Gasket
The Boeing Company Div Defense
5990-00-519-3072700-0143-1 INTERCHANGEABLE
Resolver,electrical
Malwin Electronics Corp.
5330-00-641-285010740 INTERCHANGEABLE
Seal,plain Encased
Skf Usa Inc. Dba Skf Aerospace Sealing Solutions
4330-00-698-402550158 INTERCHANGEABLE
Filter Element,fluid
Arvinmeritor Inc
4820-01-148-942340176-105 INTERCHANGEABLE
Valve,regulating,temperature
Trac Regulator Co., Inc. Dba Trac Regulator Co Inc
4820-01-183-460540417 INTERCHANGEABLE
Valve,regulating,temperature
Trac Regulator Co., Inc. Dba Trac Regulator Co Inc
5306-01-184-265950158-1164-2 INTERCHANGEABLE
Bolt,machine
Mission Systems Davenport Inc.
3020-01-370-270633718 INTERCHANGEABLE
Gear,bevel
Von Ruden Mfg Inc
Cross-Reference Index
Part NumberManufacturer
50158 Trac Regulator Co., Inc. Dba Trac Regulator Co Inc (USA)
50158-17 PRIMARY Trac Regulator Co., Inc. Dba Trac Regulator Co Inc (USA)
Related Parts
5935-00-020-7979INTERCHANGEABLE
CONNECTOR BODY,RECEPTACLE,ELECTR
5930-00-105-6450INTERCHANGEABLE
SWITCH,PRESSURE
5330-00-168-5630INTERCHANGEABLE
GASKET
50-1581-7
5990-00-519-3072INTERCHANGEABLE
RESOLVER,ELECTRICAL
700-0143-1
5330-00-641-2850INTERCHANGEABLE
SEAL,PLAIN ENCASED
10740
4330-00-698-4025INTERCHANGEABLE
FILTER ELEMENT,FLUID
50158
4820-01-148-9423INTERCHANGEABLE
VALVE,REGULATING,TEMPERATURE
40176-105
4820-01-183-4605INTERCHANGEABLE
VALVE,REGULATING,TEMPERATURE
40417
5306-01-184-2659INTERCHANGEABLE
BOLT,MACHINE
50158-1164-2
3020-01-370-2706INTERCHANGEABLE
GEAR,BEVEL
33718
4720-01-436-0143INTERCHANGEABLE
HOSE ASSEMBLY,NONMETALLIC
4M2T-6FFORX-4FFORX-72
5365-01-502-6925INTERCHANGEABLE
SPACER,RING
50158

Frequently Asked Questions

What is NSN 6685-01-169-6678?

NSN 6685-01-169-6678 is a Thermostat,flow Control, manufactured by Trac Regulator Co., Inc. Dba Trac Regulator Co Inc, classified under FSC 6685 (No Item Name Available). Status: active.

What are the part numbers for NSN 6685-01-169-6678?

NSN 6685-01-169-6678 has 2 cross-referenced part numbers: 50158 (Trac Regulator Co., Inc. Dba Trac Regulator Co Inc), 50158-17 (Trac Regulator Co., Inc. Dba Trac Regulator Co Inc).

What NSN replaces 6685-01-169-6678?

There are 12 known substitutes for 6685-01-169-6678: 5935-00-020-7979, 5930-00-105-6450, 5330-00-168-5630 and 9 more. Verify interchangeability with system specifications before substitution.

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