PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

1603-2FTG 1-1/2X2-11/32Adapter,straight,pipe to Tube

Hyspan Precision Products, Inc. · NSN 4730-00-266-1812 · FSC 4730 · No Item Name Available
Verified by PartsTable
NSN 4730-00-266-1812 — this item is cataloged by the U.S. Government under National Stock Number 4730-00-266-1812. Primary manufacturer part number: 1603-2FTG 1-1/2X2-11/32.
Features
  • Adapter,straight,pipe to Tube — FSC 4730
  • Connection Type: THREADED INTERNAL PIPE SECOND END
  • Connection Style: PLAIN (PIPE) SECOND END
  • Material: COPPER ALLOY OVERALL
  • Tubing Wall Nominal Thickness for Which Designed: 0.041 INCHES FIRST END IN
  • Nominal Outside Diameter Tube Accommodated: 1.575 INCHES FIRST END IN
  • Nominal Thread Size: 1.500 INCHES SECOND END IN
  • Connection Style: PLAIN (TUBE) FIRST END
Applications
  • Fluid conveyance
  • Hydraulic system plumbing
  • Pneumatic line routing
  • Applications requiring Copper Alloy Overall construction
General Description

The Adapter,straight,pipe to Tube, cataloged under National Stock Number 4730-00-266-1812, 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 Hyspan Precision Products, Inc.. Government technical data includes 11 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 7 commercial cross-references from 5 manufacturers, enabling identification through both NSN and commercial part number lookups. 2 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Cancelled.

Technical Specifications
ParameterValue
NSN4730-00-266-1812
Primary Part Number1603-2FTG 1-1/2X2-11/32
Item NameAdapter,straight,pipe to Tube
FSC / FSG4730 / 47 — No Item Name Available
ManufacturerHyspan Precision Products, Inc.
StatusCANCELLED
Connection TypeTHREADED INTERNAL PIPE SECOND END
Connection StylePLAIN (PIPE) SECOND END
MaterialCOPPER ALLOY OVERALL
Tubing Wall Nominal Thickness for Which Designed0.041 INCHES FIRST END IN
Nominal Outside Diameter Tube Accommodated1.575 INCHES FIRST END IN
Nominal Thread Size1.500 INCHES SECOND END IN
Connection StylePLAIN (TUBE) FIRST END
Material Document and ClassificationMIL-T-16420 MIL SPEC SINGLE MATERIAL RESPONSE OVERALL
Nominal Overall Length2.019 INCHES IN
Connection TypeUNTHREADED INTERNAL TUBE FIRST END
Thread Series DesignatorNPTF SECOND END
Lifecycle & Compliance
Acquisition StatusCANCELLED
HAZMATNo
Verified Substitutes 2
4730-00-190-78819975206-8 INTERCHANGEABLE
Adapter,straight,pipe to Tube
Us Army Aviation and Missile Command
3110-01-085-8577130016 INTERCHANGEABLE
Bearing,journal
Dresser Rand Co Terry Corp Steam Turbine Motor and Generator Co a Joint Venture
Cross-Reference Index
Part NumberManufacturer
1603-2FTG 1-1/2X2-11/32 Hyspan Precision Products, Inc. (USA)
A3709 Mueller Brass Co. (USA)
B16-22-1951 American National Standards Institute Incorporated Dba American National Standards Institute (USA)
603-2-1 1-2 Nibco Inc (USA)
9975206-1 Us Army Aviation and Missile Command (USA)
9975206 Us Army Aviation and Missile Command (USA)
W1579 Mueller Brass Co. (USA)
Related Parts
4730-00-190-7881INTERCHANGEABLE
ADAPTER,STRAIGHT,PIPE TO TUBE
9975206-8
3110-01-085-8577INTERCHANGEABLE
BEARING,JOURNAL
130016

Frequently Asked Questions

What is NSN 4730-00-266-1812?

NSN 4730-00-266-1812 is a Adapter,straight,pipe to Tube, manufactured by Hyspan Precision Products, Inc., classified under FSC 4730 (No Item Name Available). Status: cancelled.

What are the part numbers for NSN 4730-00-266-1812?

NSN 4730-00-266-1812 has 7 cross-referenced part numbers: 1603-2FTG 1-1/2X2-11/32 (Hyspan Precision Products, Inc.), A3709 (Mueller Brass Co.), B16-22-1951 (American National Standards Institute Incorporated Dba American National Standards Institute), 603-2-1 1-2 (Nibco Inc), 9975206-1 (Us Army Aviation and Missile Command) and 2 more.

What NSN replaces 4730-00-266-1812?

There are 2 known substitutes for 4730-00-266-1812: 4730-00-190-7881, 3110-01-085-8577. Verify interchangeability with system specifications before substitution.

What are the specifications of 1603-2FTG 1-1/2X2-11/32?

Key specifications for 1603-2FTG 1-1/2X2-11/32: Connection Type: THREADED INTERNAL PIPE SECOND END; Connection Style: PLAIN (PIPE) SECOND END; Material: COPPER ALLOY OVERALL; Tubing Wall Nominal Thickness for Which Designed: 0.041 INCHES FIRST END IN. 11 total characteristics are documented in the Federal Logistics Information System.

Is NSN 4730-00-266-1812 still in active supply?

NSN 4730-00-266-1812 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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