PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

MS35923-28Reducer,tube

Hydro Flex Inc · NSN 4730-00-264-9189 · FSC 4730 · No Item Name Available
Verified by PartsTable
NSN 4730-00-264-9189 — this item is cataloged by the U.S. Government under National Stock Number 4730-00-264-9189. Primary manufacturer part number: MS35923-28.
Features
  • Reducer,tube — FSC 4730
  • Reducer Type: CONCENTRIC
  • Connection Type: UNTHREADED INTERNAL TUBE SECOND END
  • Connection Style: CRIMPED (TUBE) FIRST END
  • Connection Type: UNTHREADED INTERNAL TUBE FIRST END
  • Nominal Outside Diameter Tube Accommodated: 1.625 INCHES SECOND END IN
  • Connection Style: CRIMPED (TUBE) SECOND END
  • Nominal Overall Length: 2.950 INCHES IN
Applications
  • Fluid conveyance
  • Hydraulic system plumbing
  • Pneumatic line routing
  • Applications requiring Copper Alloy Overall construction
General Description

The Reducer,tube, cataloged under National Stock Number 4730-00-264-9189, 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 Hydro Flex Inc. Government technical data includes 10 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 11 commercial cross-references from 10 manufacturers, enabling identification through both NSN and commercial part number lookups. 9 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Cancelled.

Technical Specifications
ParameterValue
NSN4730-00-264-9189
Primary Part NumberMS35923-28
Item NameReducer,tube
FSC / FSG4730 / 47 — No Item Name Available
ManufacturerHydro Flex Inc
StatusCANCELLED
Reducer TypeCONCENTRIC
Connection TypeUNTHREADED INTERNAL TUBE SECOND END
Connection StyleCRIMPED (TUBE) FIRST END
Connection TypeUNTHREADED INTERNAL TUBE FIRST END
Nominal Outside Diameter Tube Accommodated1.625 INCHES SECOND END IN
Connection StyleCRIMPED (TUBE) SECOND END
Nominal Overall Length2.950 INCHES IN
Material Document and ClassificationASTM B88 ASSN STD SINGLE MATERIAL RESPONSE OVERALL
MaterialCOPPER ALLOY OVERALL
Nominal Outside Diameter Tube Accommodated2.125 INCHES FIRST END IN
Lifecycle & Compliance
Acquisition StatusCANCELLED
HAZMATNo
Verified Substitutes 9
3110-00-100-034011009 INTERCHANGEABLE
Cup,tapered Roller Bearing
Black and Decker Us Inc
3110-00-100-03491729 INTERCHANGEABLE
Cup,tapered Roller Bearing
The Timken Corporation
6810-00-223-5227 INTERCHANGEABLE
Methyl Orange
6810-00-264-8958 INTERCHANGEABLE
Methyl Orange
8110-00-856-6246 INTERCHANGEABLE
Repair Kit,collapsible Drum
5950-01-074-393481502-5 INTERCHANGEABLE
Transformer,power
Hamilton Sundstrand Corporation Dba Collins Aerospace
4730-01-287-46926246 INTERCHANGEABLE
Tee,tube
Atco Products Inc
2940-01-363-899025097919 INTERCHANGEABLE
Filter Element,fluid
General Motors Llc Dba General Motors Llc
2940-01-368-0071CA7017 INTERCHANGEABLE
Filter Element,intake Air Cleane
Honeywell International Inc Dba Honeywell Div Consumer Products Group
Cross-Reference Index
Part NumberManufacturer
MS35923-28 Hydro Flex Inc (USA)
9101R2X1 1-2 Itt Grinnell Corp (USA)
AA59447-28 Federal Commercial Item Description Promulgated by General Services Administration Washington DC (USA)
BM11383-42 Demarkus Corp Refrigeration Engineering Corp (USA)
A-A-59447 Federal Commercial Item Description Promulgated by General Services Administration Washington DC (USA)
600-2X1 1-2 Nibco Inc (USA)
C1302X11-2 Muller Industries Inc (USA)
MS35923-28 Mindeco Corp (USA)
6246 Alter Harry Co the Div of T E C (USA)
W1073 Mueller Brass Co. (USA)
MS35923-28 Military Standards Promulgated by Military Departments Under Authority of Defense Standardization Manual 4120 3-M
Related Parts
3110-00-100-0340INTERCHANGEABLE
CUP,TAPERED ROLLER BEARING
11009
3110-00-100-0349INTERCHANGEABLE
CUP,TAPERED ROLLER BEARING
1729
6810-00-223-5227INTERCHANGEABLE
METHYL ORANGE
6810-00-264-8958INTERCHANGEABLE
METHYL ORANGE
8110-00-856-6246INTERCHANGEABLE
REPAIR KIT,COLLAPSIBLE DRUM
5950-01-074-3934INTERCHANGEABLE
TRANSFORMER,POWER
81502-5
4730-01-287-4692INTERCHANGEABLE
TEE,TUBE
6246
2940-01-363-8990INTERCHANGEABLE
FILTER ELEMENT,FLUID
25097919
2940-01-368-0071INTERCHANGEABLE
FILTER ELEMENT,INTAKE AIR CLEANE
CA7017

Frequently Asked Questions

What is NSN 4730-00-264-9189?

NSN 4730-00-264-9189 is a Reducer,tube, manufactured by Hydro Flex Inc, classified under FSC 4730 (No Item Name Available). Status: cancelled.

What are the part numbers for NSN 4730-00-264-9189?

NSN 4730-00-264-9189 has 11 cross-referenced part numbers: MS35923-28 (Hydro Flex Inc), 9101R2X1 1-2 (Itt Grinnell Corp), AA59447-28 (Federal Commercial Item Description Promulgated by General Services Administration Washington DC), BM11383-42 (Demarkus Corp Refrigeration Engineering Corp), A-A-59447 (Federal Commercial Item Description Promulgated by General Services Administration Washington DC) and 6 more.

What NSN replaces 4730-00-264-9189?

There are 9 known substitutes for 4730-00-264-9189: 3110-00-100-0340, 3110-00-100-0349, 6810-00-223-5227 and 6 more. Verify interchangeability with system specifications before substitution.

What are the specifications of MS35923-28?

Key specifications for MS35923-28: Reducer Type: CONCENTRIC; Connection Type: UNTHREADED INTERNAL TUBE SECOND END; Connection Style: CRIMPED (TUBE) FIRST END; Connection Type: UNTHREADED INTERNAL TUBE FIRST END. 10 total characteristics are documented in the Federal Logistics Information System.

Is NSN 4730-00-264-9189 still in active supply?

NSN 4730-00-264-9189 is currently cancelled. Check with the Defense Logistics Agency for current availability and authorized substitutes.

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