PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

17803Flange,pipe

Gil, Inc. · NSN 4730-01-139-5526 · FSC 4730 · No Item Name Available
Verified by PartsTable
NSN 4730-01-139-5526 — this item is cataloged by the U.S. Government under National Stock Number 4730-01-139-5526. Primary manufacturer part number: 17803.
Features
  • Flange,pipe — FSC 4730
  • Material: COPPER ALLOY
  • Nominal Pipe Size for Which Designed: 0.750 INCHES IN
  • Maximum Operating Temp and Media for Which Designed: 425.0 FAHRENHEIT GAS AND 425.0 FAHRENHEIT OIL AND 425.0 FAHRENHEIT WATER AND 425.0 FAHRENHEIT STEAM DEGF
  • 1 verified cross-reference
  • Primary manufacturer: Gil, Inc.
Applications
  • Fluid conveyance
  • Hydraulic system plumbing
  • Pneumatic line routing
  • Applications requiring Copper Alloy construction
General Description

The Flange,pipe, cataloged under National Stock Number 4730-01-139-5526, 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 Gil, Inc.. Government technical data includes 3 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 1 commercial cross-reference from 1 manufacturer, enabling identification through both NSN and commercial part number lookups. 4 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.

Technical Specifications
ParameterValue
NSN4730-01-139-5526
Primary Part Number17803
Item NameFlange,pipe
FSC / FSG4730 / 47 — No Item Name Available
ManufacturerGil, Inc.
StatusACTIVE
MaterialCOPPER ALLOY
Nominal Pipe Size for Which Designed0.750 INCHES IN
Maximum Operating Temp and Media for Which Designed425.0 FAHRENHEIT GAS AND 425.0 FAHRENHEIT OIL AND 425.0 FAHRENHEIT WATER AND 425.0 FAHRENHEIT STEAM DEGF
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 4
5935-00-175-6953300433 INTERCHANGEABLE
Connector Body,plug,electrical
Lucent Technologies Inc Corporate Headquarters
4820-01-105-789417803 INTERCHANGEABLE
Valve,safety Relief
Leroi International Inc Dba Compair Leroi
5360-01-269-726617803 INTERCHANGEABLE
Spring,breakaway Tr
Us Army Aviation and Missile Command
8145-01-302-098617803 INTERCHANGEABLE
Base Assembly,optics
Willard Marine, Inc.
Cross-Reference Index
Part NumberManufacturer
17803 PRIMARY Gil, Inc. (USA)
Related Parts
5935-00-175-6953INTERCHANGEABLE
CONNECTOR BODY,PLUG,ELECTRICAL
300433
4820-01-105-7894INTERCHANGEABLE
VALVE,SAFETY RELIEF
17803
5360-01-269-7266INTERCHANGEABLE
SPRING,BREAKAWAY TR
17803
8145-01-302-0986INTERCHANGEABLE
BASE ASSEMBLY,OPTICS
17803

Frequently Asked Questions

What is NSN 4730-01-139-5526?

NSN 4730-01-139-5526 is a Flange,pipe, manufactured by Gil, Inc., classified under FSC 4730 (No Item Name Available). Status: active.

What are the part numbers for NSN 4730-01-139-5526?

NSN 4730-01-139-5526 has 1 cross-referenced part number: 17803 (Gil, Inc.).

What NSN replaces 4730-01-139-5526?

There are 4 known substitutes for 4730-01-139-5526: 5935-00-175-6953, 4820-01-105-7894, 5360-01-269-7266 and 1 more. Verify interchangeability with system specifications before substitution.

What are the specifications of 17803?

Key specifications for 17803: Material: COPPER ALLOY; Nominal Pipe Size for Which Designed: 0.750 INCHES IN; Maximum Operating Temp and Media for Which Designed: 425.0 FAHRENHEIT GAS AND 425.0 FAHRENHEIT OIL AND 425.0 FAHRENHEIT WATER AND 425.0 FAHRENHEIT STEAM DEGF. 3 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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