PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

W1287Adapter,straight,pipe to Tube

Mueller Brass Co. · NSN 4730-00-722-2637 · FSC 4730 · No Item Name Available
Verified by PartsTable
NSN 4730-00-722-2637 — this item is cataloged by the U.S. Government under National Stock Number 4730-00-722-2637. Primary manufacturer part number: W1287.
Features
  • Adapter,straight,pipe to Tube — FSC 4730
  • Nominal Outside Diameter Tube Accommodated: 2.125 INCHES FIRST END IN
  • Connection Style: PLAIN (PIPE) SECOND END
  • Material: COPPER ALLOY OVERALL
  • Nominal Thread Size: 2.000 INCHES SECOND END IN
  • Connection Style: SOCKET (TUBE) FIRST END
  • Connection Type: UNTHREADED INTERNAL TUBE FIRST END
  • Thread Series Designator: NPT SECOND 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 4730-00-722-2637, 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 9 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. 12 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Cancelled.

Technical Specifications
ParameterValue
NSN4730-00-722-2637
Primary Part NumberW1287
Item NameAdapter,straight,pipe to Tube
FSC / FSG4730 / 47 — No Item Name Available
ManufacturerMueller Brass Co.
StatusCANCELLED
Nominal Outside Diameter Tube Accommodated2.125 INCHES FIRST END IN
Connection StylePLAIN (PIPE) SECOND END
MaterialCOPPER ALLOY OVERALL
Nominal Thread Size2.000 INCHES SECOND END IN
Connection StyleSOCKET (TUBE) FIRST END
Connection TypeUNTHREADED INTERNAL TUBE FIRST END
Thread Series DesignatorNPT SECOND END
Connection TypeTHREADED INTERNAL PIPE SECOND END
Nominal Overall Length2.400 INCHES IN
Lifecycle & Compliance
Acquisition StatusCANCELLED
HAZMATNo
Verified Substitutes 12
4730-00-270-3886 INTERCHANGEABLE
Nut,slip Joint
4730-00-270-3889 INTERCHANGEABLE
Nut,slip Joint
4730-00-270-38914730002703891 INTERCHANGEABLE
Nut,slip Joint
Samuel Levine Plumbing and Heating Supplies, Inc. Div Slphs Inc
4730-00-270-3892 INTERCHANGEABLE
Nut,slip Joint
4730-00-270-3895 INTERCHANGEABLE
Nut,slip Joint
4730-00-304-3481 INTERCHANGEABLE
Coupling,pipe
4510-00-305-7949HST05LKSB 3/8 INTERCHANGEABLE
Stop,angle,plumbing
Mcguire Mfg Co Inc
4730-00-408-7902A7009 INTERCHANGEABLE
Elbow,tube
Mueller Brass Co.
4730-00-507-0034W40109 INTERCHANGEABLE
Tee,tube
Mueller Brass Co.
4730-00-878-3204 INTERCHANGEABLE
Elbow,tube
Cross-Reference Index
Part NumberManufacturer
603-2IN Nibco Inc (USA)
W1287 PRIMARY Mueller Brass Co. (USA)
B1623 American National Standards Institute Incorporated Dba American National Standards Institute (USA)
Related Parts
4730-00-270-3886INTERCHANGEABLE
NUT,SLIP JOINT
4730-00-270-3889INTERCHANGEABLE
NUT,SLIP JOINT
4730-00-270-3891INTERCHANGEABLE
NUT,SLIP JOINT
4730002703891
4730-00-270-3892INTERCHANGEABLE
NUT,SLIP JOINT
4730-00-270-3895INTERCHANGEABLE
NUT,SLIP JOINT
4730-00-304-3481INTERCHANGEABLE
COUPLING,PIPE
4510-00-305-7949INTERCHANGEABLE
STOP,ANGLE,PLUMBING
HST05LKSB 3/8
4730-00-408-7902INTERCHANGEABLE
ELBOW,TUBE
A7009
4730-00-507-0034INTERCHANGEABLE
TEE,TUBE
W40109
4730-00-878-3204INTERCHANGEABLE
ELBOW,TUBE
4730-00-982-7224INTERCHANGEABLE
ADAPTER,STRAIGHT,PIPE TO TUBE
W1279
4730-01-057-3852INTERCHANGEABLE
ELBOW,TUBE
A7088

Frequently Asked Questions

What is NSN 4730-00-722-2637?

NSN 4730-00-722-2637 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 4730-00-722-2637?

NSN 4730-00-722-2637 has 3 cross-referenced part numbers: 603-2IN (Nibco Inc), W1287 (Mueller Brass Co.), B1623 (American National Standards Institute Incorporated Dba American National Standards Institute).

What NSN replaces 4730-00-722-2637?

There are 12 known substitutes for 4730-00-722-2637: 4730-00-270-3886, 4730-00-270-3889, 4730-00-270-3891 and 9 more. Verify interchangeability with system specifications before substitution.

What are the specifications of W1287?

Key specifications for W1287: Nominal Outside Diameter Tube Accommodated: 2.125 INCHES FIRST END IN; Connection Style: PLAIN (PIPE) SECOND END; Material: COPPER ALLOY OVERALL; Nominal Thread Size: 2.000 INCHES SECOND END IN. 9 total characteristics are documented in the Federal Logistics Information System.

Is NSN 4730-00-722-2637 still in active supply?

NSN 4730-00-722-2637 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