PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

423201Seat,helical Compression Spring

Dover Pumps & Process Solutions Segment Inc Dba Blackmer Div Blackmer · NSN 5340-01-185-6773 · FSC 5340 · No Item Name Available
Verified by PartsTable
NSN 5340-01-185-6773 — this item is cataloged by the U.S. Government under National Stock Number 5340-01-185-6773. Primary manufacturer part number: 423201.
Features
  • Seat,helical Compression Spring — FSC 5340
  • 3 verified cross-references
  • Primary manufacturer: Dover Pumps & Process Solutions Segment Inc Dba Blackmer Div Blackmer
Applications
  • Mechanical energy storage
  • Vibration dampening
  • Return mechanism operation
General Description

The Seat,helical Compression Spring, cataloged under National Stock Number 5340-01-185-6773, is classified within Federal Supply Class 5340 (No Item Name Available) of the Hardware and Abrasives group. The primary manufacturer of record is Dover Pumps & Process Solutions Segment Inc Dba Blackmer Div Blackmer. This item has 3 commercial cross-references from 2 manufacturers, enabling identification through both NSN and commercial part number lookups. 12 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active. Unit of issue: EA.

Catalog Facts
Item NameSeat,helical Compression Spring
FSC / FSG5340 — No Item Name Available (FSG 53)
ManufacturersDover Pumps & Process Solutions Segment Inc Dba Blackmer Div Blackmer (CAGE 07524); Huck Intl Inc (CAGE 97928)
Technical Specifications
ParameterValue
NSN5340-01-185-6773
Primary Part Number423201
Item NameSeat,helical Compression Spring
FSC / FSG5340 / 53 — No Item Name Available
ManufacturerDover Pumps & Process Solutions Segment Inc Dba Blackmer Div Blackmer
StatusACTIVE
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Unit of IssueEA
Verified Substitutes 12
4730-00-235-4077 INTERCHANGEABLE
Flange,pipe
4730-00-278-3856 INTERCHANGEABLE
Elbow,pipe to Tube
4320-01-067-2766453201 INTERCHANGEABLE
Valve,pump
Dover Pumps & Process Solutions Segment Inc Dba Blackmer Div Blackmer
5305-01-081-891111780043 INTERCHANGEABLE
Screw,externally Relieved Body
Combat Capabilities Development Command (ccdc) Armaments Center Dba Ccdc Div Logistics Research and Engineering Directorate
4320-01-130-2332023205 INTERCHANGEABLE
Housing,liquid Pump
Dover Pumps & Process Solutions Segment Inc Dba Blackmer Div Blackmer
4710-01-184-5527908422 INTERCHANGEABLE
Pipe Metallic,precut
Dover Pumps & Process Solutions Segment Inc Dba Blackmer Div Blackmer
4730-01-184-5528908420 INTERCHANGEABLE
Nipple,pipe
Dover Pumps & Process Solutions Segment Inc Dba Blackmer Div Blackmer
4730-01-185-8136 INTERCHANGEABLE
Flange,pipe
4820-01-185-8228413201 INTERCHANGEABLE
Cap,valve
Dover Pumps & Process Solutions Segment Inc Dba Blackmer Div Blackmer
4730-01-186-8701 INTERCHANGEABLE
Flange,pipe
Cross-Reference Index
Part NumberManufacturer
E-3373 PIECE 7 Dover Pumps & Process Solutions Segment Inc Dba Blackmer Div Blackmer (USA)
423201 PRIMARY Dover Pumps & Process Solutions Segment Inc Dba Blackmer Div Blackmer (USA)
E-3373 Huck Intl Inc (USA)
Related Parts
4730-00-235-4077INTERCHANGEABLE
FLANGE,PIPE
4730-00-278-3856INTERCHANGEABLE
ELBOW,PIPE TO TUBE
4320-01-067-2766INTERCHANGEABLE
VALVE,PUMP
453201
5305-01-081-8911INTERCHANGEABLE
SCREW,EXTERNALLY RELIEVED BODY
11780043
4320-01-130-2332INTERCHANGEABLE
HOUSING,LIQUID PUMP
023205
4710-01-184-5527INTERCHANGEABLE
PIPE METALLIC,PRECUT
908422
4730-01-184-5528INTERCHANGEABLE
NIPPLE,PIPE
908420
4730-01-185-8136INTERCHANGEABLE
FLANGE,PIPE
4820-01-185-8228INTERCHANGEABLE
CAP,VALVE
413201
4730-01-186-8701INTERCHANGEABLE
FLANGE,PIPE
4320-01-202-5613INTERCHANGEABLE
PUMP UNIT,ROTARY
E-3373-2
4320-01-299-0505INTERCHANGEABLE
HOUSING,LIQUID PUMP
023208

Frequently Asked Questions

What is NSN 5340-01-185-6773?

NSN 5340-01-185-6773 is a Seat,helical Compression Spring, manufactured by Dover Pumps & Process Solutions Segment Inc Dba Blackmer Div Blackmer, classified under FSC 5340 (No Item Name Available). Status: active.

What are the part numbers for NSN 5340-01-185-6773?

NSN 5340-01-185-6773 has 3 cross-referenced part numbers: E-3373 PIECE 7 (Dover Pumps & Process Solutions Segment Inc Dba Blackmer Div Blackmer), 423201 (Dover Pumps & Process Solutions Segment Inc Dba Blackmer Div Blackmer), E-3373 (Huck Intl Inc).

What NSN replaces 5340-01-185-6773?

There are 12 known substitutes for 5340-01-185-6773: 4730-00-235-4077, 4730-00-278-3856, 4320-01-067-2766 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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