PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

102 3/8INUnion,tube

Elkhart Products Corp · NSN 4730-00-266-3897 · FSC 4730 · No Item Name Available
Verified by PartsTable
NSN 4730-00-266-3897 — this item is cataloged by the U.S. Government under National Stock Number 4730-00-266-3897. Primary manufacturer part number: 102 3/8IN.
Features
  • Union,tube — FSC 4730
  • Material: COPPER ALLOY SHOULDER
  • Material: COPPER ALLOY THREAD PIECE
  • Coupling Flange Shape: HEXAGON
  • Connection Style: SOCKET (TUBE) ALL ENDS
  • Material: COPPER ALLOY TAILPIECE
  • Connection Type: UNTHREADED INTERNAL TUBE ALL ENDS
  • Reducer Type: CONCENTRIC
Applications
  • Fluid conveyance
  • Hydraulic system plumbing
  • Pneumatic line routing
  • Applications requiring Copper Alloy Shoulder construction
General Description

The Union,tube, cataloged under National Stock Number 4730-00-266-3897, 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 Elkhart Products Corp. Government technical data includes 11 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 5 commercial cross-references from 3 manufacturers, enabling identification through both NSN and commercial part number lookups. 12 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Cancelled.

Technical Specifications
ParameterValue
NSN4730-00-266-3897
Primary Part Number102 3/8IN
Item NameUnion,tube
FSC / FSG4730 / 47 — No Item Name Available
ManufacturerElkhart Products Corp
StatusCANCELLED
MaterialCOPPER ALLOY SHOULDER
MaterialCOPPER ALLOY THREAD PIECE
Coupling Flange ShapeHEXAGON
Connection StyleSOCKET (TUBE) ALL ENDS
MaterialCOPPER ALLOY TAILPIECE
Connection TypeUNTHREADED INTERNAL TUBE ALL ENDS
Reducer TypeCONCENTRIC
Style DesignatorSCREWED
Seat TypeBEVELED
Nominal Outside Diameter Tube Accommodated0.375 INCHES ALL ENDS IN
Nominal Overall Length2.000 INCHES IN
Lifecycle & Compliance
Acquisition StatusCANCELLED
HAZMATNo
Verified Substitutes 12
4730-00-088-8389 INTERCHANGEABLE
Union,tube
4730-00-088-8952 INTERCHANGEABLE
Union,pipe
4730-00-189-2588 INTERCHANGEABLE
Union,pipe
4730-00-189-2592 INTERCHANGEABLE
Union,pipe
4730-00-189-2595 INTERCHANGEABLE
Union,pipe
4730-00-200-0311 INTERCHANGEABLE
Union,pipe
4730-00-248-9348 INTERCHANGEABLE
Union,pipe
4730-00-248-9351 INTERCHANGEABLE
Union,pipe
4730-00-266-3899 INTERCHANGEABLE
Union,tube
4730-00-266-3901 INTERCHANGEABLE
Union,tube
Cross-Reference Index
Part NumberManufacturer
102 3/8IN Elkhart Products Corp (USA)
A-A-59617 Federal Commercial Item Description Promulgated by General Services Administration Washington DC (USA)
402 Kennecott Corp Chase Extrusions Div (USA)
AA59617-21 Federal Commercial Item Description Promulgated by General Services Administration Washington DC (USA)
4023-8IN Kennecott Corp Chase Extrusions Div (USA)
Related Parts
4730-00-088-8389INTERCHANGEABLE
UNION,TUBE
4730-00-088-8952INTERCHANGEABLE
UNION,PIPE
4730-00-189-2588INTERCHANGEABLE
UNION,PIPE
4730-00-189-2592INTERCHANGEABLE
UNION,PIPE
4730-00-189-2595INTERCHANGEABLE
UNION,PIPE
4730-00-200-0311INTERCHANGEABLE
UNION,PIPE
4730-00-248-9348INTERCHANGEABLE
UNION,PIPE
4730-00-248-9351INTERCHANGEABLE
UNION,PIPE
4730-00-266-3899INTERCHANGEABLE
UNION,TUBE
4730-00-266-3901INTERCHANGEABLE
UNION,TUBE
4730-00-287-0420INTERCHANGEABLE
UNION,PIPE
4730-00-287-0421INTERCHANGEABLE
UNION,PIPE

Frequently Asked Questions

What is NSN 4730-00-266-3897?

NSN 4730-00-266-3897 is a Union,tube, manufactured by Elkhart Products Corp, classified under FSC 4730 (No Item Name Available). Status: cancelled.

What are the part numbers for NSN 4730-00-266-3897?

NSN 4730-00-266-3897 has 5 cross-referenced part numbers: 102 3/8IN (Elkhart Products Corp), A-A-59617 (Federal Commercial Item Description Promulgated by General Services Administration Washington DC), 402 (Kennecott Corp Chase Extrusions Div), AA59617-21 (Federal Commercial Item Description Promulgated by General Services Administration Washington DC), 4023-8IN (Kennecott Corp Chase Extrusions Div).

What NSN replaces 4730-00-266-3897?

There are 12 known substitutes for 4730-00-266-3897: 4730-00-088-8389, 4730-00-088-8952, 4730-00-189-2588 and 9 more. Verify interchangeability with system specifications before substitution.

What are the specifications of 102 3/8IN?

Key specifications for 102 3/8IN: Material: COPPER ALLOY SHOULDER; Material: COPPER ALLOY THREAD PIECE; Coupling Flange Shape: HEXAGON; Connection Style: SOCKET (TUBE) ALL ENDS. 12 total characteristics are documented in the Federal Logistics Information System.

Is NSN 4730-00-266-3897 still in active supply?

NSN 4730-00-266-3897 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.
PartsTable Design LLC · partstable.com