PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

600388AReducer,tube

Cv International, Inc. · NSN 4730-01-128-8257 · FSC 4730 · No Item Name Available
Verified by PartsTable
NSN 4730-01-128-8257 — this item is cataloged by the U.S. Government under National Stock Number 4730-01-128-8257. Primary manufacturer part number: 600388A.
Features
  • Reducer,tube — FSC 4730
  • Nominal Thread Size: 1.062 INCHES FIRST END IN
  • Thread Class: 2A FIRST END A
  • Thread Series Designator: UNF SECOND END
  • Thread Quantity Per Inch: 12 FIRST END
  • Reducer Type: CONCENTRIC
  • Thread Class: 3A SECOND END A
  • Connection Type: THREADED EXTERNAL TUBE FIRST END
Applications
  • Fluid conveyance
  • Hydraulic system plumbing
  • Pneumatic line routing
  • Applications requiring Steel Comp 304 Overall construction
General Description

The Reducer,tube, cataloged under National Stock Number 4730-01-128-8257, 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 Cv International, Inc.. Government technical data includes 18 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 2 commercial cross-references from 1 manufacturer, enabling identification through both NSN and commercial part number lookups. 3 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.

Technical Specifications
ParameterValue
NSN4730-01-128-8257
Primary Part Number600388A
Item NameReducer,tube
FSC / FSG4730 / 47 — No Item Name Available
ManufacturerCv International, Inc.
StatusACTIVE
Nominal Thread Size1.062 INCHES FIRST END IN
Thread Class2A FIRST END A
Thread Series DesignatorUNF SECOND END
Thread Quantity Per Inch12 FIRST END
Reducer TypeCONCENTRIC
Thread Class3A SECOND END A
Connection TypeTHREADED EXTERNAL TUBE FIRST END
Nominal Overall Length2.130 INCHES IN
MaterialSTEEL COMP 304 OVERALL
Nominal Outside Diameter Tube Accommodated1.062 INCHES FIRST END IN
Connection TypeTHREADED EXTERNAL TUBE SECOND END
Nominal Outside Diameter Tube Accommodated0.750 INCHES SECOND END IN
Nominal Thread Size0.750 INCHES SECOND END IN
Connection StylePLAIN (TUBE) FIRST END
Connection StyleFLARED (TUBE) SECOND END
Thread Series DesignatorUN FIRST END
Material Document and ClassificationQQ-S-763 FED SPEC SINGLE MATERIAL RESPONSE OVERALL
Seat Angle37.0 DEGREES SECOND END
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 3
4330-00-900-9448600388 INTERCHANGEABLE
Filter Element,fluid
Kaydon Custom Filtration Corporation
5815-00-920-2495 INTERCHANGEABLE
Lock Slide,right
4730-01-245-0895 INTERCHANGEABLE
Coupling,pipe
Cross-Reference Index
Part NumberManufacturer
600388A PRIMARY Cv International, Inc. (USA)
600388 Cv International, Inc. (USA)
Related Parts
4330-00-900-9448INTERCHANGEABLE
FILTER ELEMENT,FLUID
600388
5815-00-920-2495INTERCHANGEABLE
LOCK SLIDE,RIGHT
4730-01-245-0895INTERCHANGEABLE
COUPLING,PIPE

Frequently Asked Questions

What is NSN 4730-01-128-8257?

NSN 4730-01-128-8257 is a Reducer,tube, manufactured by Cv International, Inc., classified under FSC 4730 (No Item Name Available). Status: active.

What are the part numbers for NSN 4730-01-128-8257?

NSN 4730-01-128-8257 has 2 cross-referenced part numbers: 600388A (Cv International, Inc.), 600388 (Cv International, Inc.).

What NSN replaces 4730-01-128-8257?

There are 3 known substitutes for 4730-01-128-8257: 4330-00-900-9448, 5815-00-920-2495, 4730-01-245-0895. Verify interchangeability with system specifications before substitution.

What are the specifications of 600388A?

Key specifications for 600388A: Nominal Thread Size: 1.062 INCHES FIRST END IN; Thread Class: 2A FIRST END A; Thread Series Designator: UNF SECOND END; Thread Quantity Per Inch: 12 FIRST END. 18 total characteristics are documented in the Federal Logistics Information System.

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