PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

W1903Coupling,tube

Mueller Brass Co. · NSN 4730-00-722-1910 · FSC 4730 · No Item Name Available
Verified by PartsTable
NSN 4730-00-722-1910 — this item is cataloged by the U.S. Government under National Stock Number 4730-00-722-1910. Primary manufacturer part number: W1903.
Features
  • Coupling,tube — FSC 4730
  • Nominal Outside Diameter Tube Accommodated: 0.625 INCHES ALL ENDS IN
  • Material: COPPER OVERALL
  • Style Designator: BEVELED BOTH ENDS
  • Nominal Overall Length: 1.250 INCHES IN
  • Connection Type: UNTHREADED INTERNAL TUBE ALL ENDS
  • Connection Style: PLAIN (TUBE) ALL ENDS
  • 3 verified cross-references
Applications
  • Fluid conveyance
  • Hydraulic system plumbing
  • Pneumatic line routing
  • Applications requiring Copper Overall construction
General Description

The Coupling,tube, cataloged under National Stock Number 4730-00-722-1910, 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 Mueller Brass Co.. Government technical data includes 6 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 3 commercial cross-references from 3 manufacturers, enabling identification through both NSN and commercial part number lookups. 5 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Cancelled.

Technical Specifications
ParameterValue
NSN4730-00-722-1910
Primary Part NumberW1903
Item NameCoupling,tube
FSC / FSG4730 / 47 — No Item Name Available
ManufacturerMueller Brass Co.
StatusCANCELLED
Nominal Outside Diameter Tube Accommodated0.625 INCHES ALL ENDS IN
MaterialCOPPER OVERALL
Style DesignatorBEVELED BOTH ENDS
Nominal Overall Length1.250 INCHES IN
Connection TypeUNTHREADED INTERNAL TUBE ALL ENDS
Connection StylePLAIN (TUBE) ALL ENDS
Lifecycle & Compliance
Acquisition StatusCANCELLED
HAZMATNo
Verified Substitutes 5
6145-00-351-3097S19-81-4AWGM0DIFIE INTERCHANGEABLE
Wire,electrical
Insulated Cable Engineers Assn Inc
6105-00-814-2735900130-17 INTERCHANGEABLE
Motor,control
Northrop Grumman Systems Corporation Dba Northrop Grumman Systems Corp
7510-01-081-6274 INTERCHANGEABLE
Ink,marking Stencil
7690-01-300-9677 INTERCHANGEABLE
Label
5306-01-667-2407AN4C40 INTERCHANGEABLE
Bolt
National Aerospace Standards Committee Aerospace Industries Association of America Inc Not for Rfq or Solicitation Use
Cross-Reference Index
Part NumberManufacturer
601 Crane Co Div Valve Div (USA)
W1903 PRIMARY Mueller Brass Co. (USA)
AN4 PRIMARY Castle a M and Co (USA)
Related Parts
6145-00-351-3097INTERCHANGEABLE
WIRE,ELECTRICAL
S19-81-4AWGM0DIFIE
6105-00-814-2735INTERCHANGEABLE
MOTOR,CONTROL
900130-17
7510-01-081-6274INTERCHANGEABLE
INK,MARKING STENCIL
7690-01-300-9677INTERCHANGEABLE
LABEL
5306-01-667-2407INTERCHANGEABLE
BOLT
AN4C40

Frequently Asked Questions

What is NSN 4730-00-722-1910?

NSN 4730-00-722-1910 is a Coupling,tube, manufactured by Mueller Brass Co., classified under FSC 4730 (No Item Name Available). Status: cancelled.

What are the part numbers for NSN 4730-00-722-1910?

NSN 4730-00-722-1910 has 3 cross-referenced part numbers: 601 (Crane Co Div Valve Div), W1903 (Mueller Brass Co.), AN4 (Castle a M and Co).

What NSN replaces 4730-00-722-1910?

There are 5 known substitutes for 4730-00-722-1910: 6145-00-351-3097, 6105-00-814-2735, 7510-01-081-6274 and 2 more. Verify interchangeability with system specifications before substitution.

What are the specifications of W1903?

Key specifications for W1903: Nominal Outside Diameter Tube Accommodated: 0.625 INCHES ALL ENDS IN; Material: COPPER OVERALL; Style Designator: BEVELED BOTH ENDS; Nominal Overall Length: 1.250 INCHES IN. 6 total characteristics are documented in the Federal Logistics Information System.

Is NSN 4730-00-722-1910 still in active supply?

NSN 4730-00-722-1910 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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