PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

MIL-F-18180/2Flange,pipe

Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M · NSN 4730-01-186-8701 · FSC 4730 · No Item Name Available
Verified by PartsTable
NSN 4730-01-186-8701 — this item is cataloged by the U.S. Government under National Stock Number 4730-01-186-8701. Primary manufacturer part number: MIL-F-18180/2.
Features
  • Flange,pipe — FSC 4730
  • 5 verified cross-references
  • Primary manufacturer: Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M
Applications
  • Fluid conveyance
  • Hydraulic system plumbing
  • Pneumatic line routing
General Description

The Flange,pipe, cataloged under National Stock Number 4730-01-186-8701, is classified within Federal Supply Class 4730 (No Item Name Available) of the Pipe, Tubing, Hose, and Fittings group. The primary manufacturer of record is Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M. This item has 5 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.

Catalog Facts
Item NameFlange,pipe
FSC / FSG4730 — No Item Name Available (FSG 47)
ManufacturersMilitary Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M (CAGE 81349); Dover Pumps & Process Solutions Segment Inc Dba Blackmer Div Blackmer (CAGE 07524)
Technical Specifications
ParameterValue
NSN4730-01-186-8701
Primary Part NumberMIL-F-18180/2
Item NameFlange,pipe
FSC / FSG4730 / 47 — No Item Name Available
ManufacturerMilitary Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M
StatusACTIVE
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 12
4730-00-235-4077 INTERCHANGEABLE
Flange,pipe
4730-00-235-4078 INTERCHANGEABLE
Flange,pipe
1650-00-568-0167653204 INTERCHANGEABLE
Housing,valve Assembly
Hamilton Sundstrand Corporation
4730-01-022-5679 INTERCHANGEABLE
Flange,pipe
4320-01-067-2766453201 INTERCHANGEABLE
Valve,pump
Dover Pumps & Process Solutions Segment Inc Dba Blackmer Div Blackmer
4320-01-130-2332023205 INTERCHANGEABLE
Housing,liquid Pump
Dover Pumps & Process Solutions Segment Inc Dba Blackmer Div Blackmer
4730-01-181-3620 INTERCHANGEABLE
Flange,pipe
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
5340-01-185-6773423201 INTERCHANGEABLE
Seat,helical Compression Spring
Dover Pumps & Process Solutions Segment Inc Dba Blackmer Div Blackmer
Cross-Reference Index
Part NumberManufacturer
MIL-F-18180/2 Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M
M18180/2-02A01H Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M
E3373 PIECE 71B Dover Pumps & Process Solutions Segment Inc Dba Blackmer Div Blackmer (USA)
E-3373 Dover Pumps & Process Solutions Segment Inc Dba Blackmer Div Blackmer (USA)
653204 Dover Pumps & Process Solutions Segment Inc Dba Blackmer Div Blackmer (USA)
Related Parts
4730-00-235-4077INTERCHANGEABLE
FLANGE,PIPE
4730-00-235-4078INTERCHANGEABLE
FLANGE,PIPE
1650-00-568-0167INTERCHANGEABLE
HOUSING,VALVE ASSEMBLY
653204
4730-01-022-5679INTERCHANGEABLE
FLANGE,PIPE
4320-01-067-2766INTERCHANGEABLE
VALVE,PUMP
453201
4320-01-130-2332INTERCHANGEABLE
HOUSING,LIQUID PUMP
023205
4730-01-181-3620INTERCHANGEABLE
FLANGE,PIPE
4710-01-184-5527INTERCHANGEABLE
PIPE METALLIC,PRECUT
908422
4730-01-184-5528INTERCHANGEABLE
NIPPLE,PIPE
908420
5340-01-185-6773INTERCHANGEABLE
SEAT,HELICAL COMPRESSION SPRING
423201
4730-01-185-8136INTERCHANGEABLE
FLANGE,PIPE
4820-01-185-8228INTERCHANGEABLE
CAP,VALVE
413201

Frequently Asked Questions

What is NSN 4730-01-186-8701?

NSN 4730-01-186-8701 is a Flange,pipe, manufactured by Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M, classified under FSC 4730 (No Item Name Available). Status: active.

What are the part numbers for NSN 4730-01-186-8701?

NSN 4730-01-186-8701 has 5 cross-referenced part numbers: MIL-F-18180/2 (Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M), M18180/2-02A01H (Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M), E3373 PIECE 71B (Dover Pumps & Process Solutions Segment Inc Dba Blackmer Div Blackmer), E-3373 (Dover Pumps & Process Solutions Segment Inc Dba Blackmer Div Blackmer), 653204 (Dover Pumps & Process Solutions Segment Inc Dba Blackmer Div Blackmer).

What NSN replaces 4730-01-186-8701?

There are 12 known substitutes for 4730-01-186-8701: 4730-00-235-4077, 4730-00-235-4078, 1650-00-568-0167 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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