PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

WB1263Adapter,straight,pipe to Tube

Mueller Brass Co. · NSN 4730-00-266-1821 · FSC 4730 · No Item Name Available
Verified by PartsTable
NSN 4730-00-266-1821 — this item is cataloged by the U.S. Government under National Stock Number 4730-00-266-1821. Primary manufacturer part number: WB1263.
Features
  • Adapter,straight,pipe to Tube — FSC 4730
  • 16 verified cross-references
  • Primary manufacturer: Mueller Brass Co.
Applications
  • Fluid conveyance
  • Hydraulic system plumbing
  • Pneumatic line routing
General Description

The Adapter,straight,pipe to Tube, cataloged under National Stock Number 4730-00-266-1821, 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.. This item has 16 commercial cross-references from 11 manufacturers, enabling identification through both NSN and commercial part number lookups. 9 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Cancelled.

Catalog Facts
Item NameAdapter,straight,pipe to Tube
FSC / FSG4730 — No Item Name Available (FSG 47)
ManufacturersMueller Brass Co. (CAGE 41947); Avtron Aerospace Inc (CAGE 01014); Nibco Inc (CAGE 12168); Tld Ace Corp Div Tld Ace (CAGE 00365); Northrop Grumman Systems Corporation (CAGE 26512)
Technical Specifications
ParameterValue
NSN4730-00-266-1821
Primary Part NumberWB1263
Item NameAdapter,straight,pipe to Tube
FSC / FSG4730 / 47 — No Item Name Available
ManufacturerMueller Brass Co.
StatusCANCELLED
Lifecycle & Compliance
Acquisition StatusCANCELLED
HAZMATNo
Verified Substitutes 9
5950-00-280-45419603-1 INTERCHANGEABLE
Transformer,power
Robert M. Hadley Company, Inc.
5975-00-518-319491031 INTERCHANGEABLE
Plate,wall,electrical
Hubbell Incorporated (delaware) Dba Wiring Device-Kellems Division
3020-00-701-2819 INTERCHANGEABLE
Gear,worm
2920-00-900-799310947439 INTERCHANGEABLE
Regulator,engine Generator
U S Army Tank Automotive Command Amsta-Im-Mm
4730-01-253-0914 INTERCHANGEABLE
Adapter,straight,pipe to Tube
5305-01-275-3192257-00011-1 INTERCHANGEABLE
Screw,machine
Kovatch Corp.
5360-01-511-8387 INTERCHANGEABLE
Spring Set,sniper Rifle
5330-01-576-266896031 INTERCHANGEABLE
Gasket
Ingersoll-Rand Company Dba Ingersoll-Rand
5305-01-597-616496031 INTERCHANGEABLE
Screw,machine
Bourns Inc
Cross-Reference Index
Part NumberManufacturer
WB1263 PRIMARY Mueller Brass Co. (USA)
435213 Avtron Aerospace Inc (USA)
703-1IN Nibco Inc (USA)
58898-0000 Tld Ace Corp Div Tld Ace (USA)
GF11V1010AD13 Northrop Grumman Systems Corporation (USA)
B16-22-1951 American National Standards Institute Incorporated Dba American National Standards Institute (USA)
58898-1816 PRIMARY Tld Ace Corp Div Tld Ace (USA)
B1622 American National Standards Institute Incorporated Dba American National Standards Institute (USA)
B16-22-1951 Allied Plumbing Sales Co Inc (USA)
603-1IN Nibco Inc (USA)
9603-1 Nibco Inc (USA)
GF11V1010AD13 Mayer Malbin Co Inc (USA)
75376A Air Products & Chemicals, Inc (USA)
B16-22-1951 Mindeco Corp (USA)
W1263 PRIMARY Mueller Brass Co. (USA)
9103-1 Itt Grinnell Corp (USA)
Related Parts
5950-00-280-4541INTERCHANGEABLE
TRANSFORMER,POWER
9603-1
5975-00-518-3194INTERCHANGEABLE
PLATE,WALL,ELECTRICAL
91031
3020-00-701-2819INTERCHANGEABLE
GEAR,WORM
2920-00-900-7993INTERCHANGEABLE
REGULATOR,ENGINE GENERATOR
10947439
4730-01-253-0914INTERCHANGEABLE
ADAPTER,STRAIGHT,PIPE TO TUBE
5305-01-275-3192INTERCHANGEABLE
SCREW,MACHINE
257-00011-1
5360-01-511-8387INTERCHANGEABLE
SPRING SET,SNIPER RIFLE
5330-01-576-2668INTERCHANGEABLE
GASKET
96031
5305-01-597-6164INTERCHANGEABLE
SCREW,MACHINE
96031

Frequently Asked Questions

What is NSN 4730-00-266-1821?

NSN 4730-00-266-1821 is a Adapter,straight,pipe to Tube, manufactured by Mueller Brass Co., classified under FSC 4730 (No Item Name Available). Status: cancelled.

What are the part numbers for NSN 4730-00-266-1821?

NSN 4730-00-266-1821 has 16 cross-referenced part numbers: WB1263 (Mueller Brass Co.), 435213 (Avtron Aerospace Inc), 703-1IN (Nibco Inc), 58898-0000 (Tld Ace Corp Div Tld Ace), GF11V1010AD13 (Northrop Grumman Systems Corporation) and 11 more.

What NSN replaces 4730-00-266-1821?

There are 9 known substitutes for 4730-00-266-1821: 5950-00-280-4541, 5975-00-518-3194, 3020-00-701-2819 and 6 more. Verify interchangeability with system specifications before substitution.

Is NSN 4730-00-266-1821 still in active supply?

NSN 4730-00-266-1821 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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