PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

33873Thermostat,flow Control

Perkins Engines Inc · NSN 6685-00-549-5667 · FSC 6685 · No Item Name Available
Verified by PartsTable
NSN 6685-00-549-5667 — this item is cataloged by the U.S. Government under National Stock Number 6685-00-549-5667. Primary manufacturer part number: 33873.
Features
  • Thermostat,flow Control — FSC 6685
  • 1 verified cross-reference
  • Primary manufacturer: Perkins Engines 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 6685-00-549-5667, is classified within Federal Supply Class 6685 (No Item Name Available) of the Instruments and Laboratory Equipment group. The primary manufacturer of record is Perkins Engines Inc. This item has 1 commercial cross-reference from 1 manufacturer, enabling identification through both NSN and commercial part number lookups. 4 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)
ManufacturersPerkins Engines Inc (CAGE 13446)
Technical Specifications
ParameterValue
NSN6685-00-549-5667
Primary Part Number33873
Item NameThermostat,flow Control
FSC / FSG6685 / 66 — No Item Name Available
ManufacturerPerkins Engines Inc
StatusACTIVE
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 4
5950-00-318-1358 INTERCHANGEABLE
Coil,radio Frequency
5945-00-601-316043072-1 INTERCHANGEABLE
Relay,electromagnetic
Honeywell International Inc. Div Aerospace - Torrance
4820-01-165-38493387-3 INTERCHANGEABLE
Gland Assembly,valv
Flowserve Corporation Div Flowserve Us Inc
7010-01-625-92288273567-9 INTERCHANGEABLE
Holder Laptop
Naval Sea Systems Command
Cross-Reference Index
Part NumberManufacturer
33873 Perkins Engines Inc (USA)
Related Parts
5950-00-318-1358INTERCHANGEABLE
COIL,RADIO FREQUENCY
5945-00-601-3160INTERCHANGEABLE
RELAY,ELECTROMAGNETIC
43072-1
4820-01-165-3849INTERCHANGEABLE
GLAND ASSEMBLY,VALV
3387-3
7010-01-625-9228INTERCHANGEABLE
HOLDER LAPTOP
8273567-9

Frequently Asked Questions

What is NSN 6685-00-549-5667?

NSN 6685-00-549-5667 is a Thermostat,flow Control, manufactured by Perkins Engines Inc, classified under FSC 6685 (No Item Name Available). Status: active.

What are the part numbers for NSN 6685-00-549-5667?

NSN 6685-00-549-5667 has 1 cross-referenced part number: 33873 (Perkins Engines Inc).

What NSN replaces 6685-00-549-5667?

There are 4 known substitutes for 6685-00-549-5667: 5950-00-318-1358, 5945-00-601-3160, 4820-01-165-3849 and 1 more. Verify interchangeability with system specifications before substitution.

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