PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

W1339Reducer,tube

Mueller Brass Co. · NSN 4730-00-808-7817 · FSC 4730 · No Item Name Available
Verified by PartsTable
NSN 4730-00-808-7817 — this item is cataloged by the U.S. Government under National Stock Number 4730-00-808-7817. Primary manufacturer part number: W1339.
Features
  • Reducer,tube — FSC 4730
  • Nominal Outside Diameter Tube Accommodated: 1.000 INCHES SECOND END IN
  • Connection Style: PLAIN (TUBE) SECOND END
  • Connection Type: UNTHREADED EXTERNAL TUBE SECOND END
  • Nominal Outside Diameter Tube Accommodated: 0.500 INCHES FIRST END IN
  • Tubing Wall Nominal Thickness for Which Designed: 0.050 INCHES SECOND END IN
  • Nominal Overall Length: 1.875 INCHES IN
  • Tubing Wall Nominal Thickness for Which Designed: 0.050 INCHES FIRST END IN
Applications
  • Fluid conveyance
  • Hydraulic system plumbing
  • Pneumatic line routing
  • Applications requiring Copper Alloy Overall construction
General Description

The Reducer,tube, cataloged under National Stock Number 4730-00-808-7817, 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 13 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 4 commercial cross-references from 4 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
NSN4730-00-808-7817
Primary Part NumberW1339
Item NameReducer,tube
FSC / FSG4730 / 47 — No Item Name Available
ManufacturerMueller Brass Co.
StatusCANCELLED
Nominal Outside Diameter Tube Accommodated1.000 INCHES SECOND END IN
Connection StylePLAIN (TUBE) SECOND END
Connection TypeUNTHREADED EXTERNAL TUBE SECOND END
Nominal Outside Diameter Tube Accommodated0.500 INCHES FIRST END IN
Tubing Wall Nominal Thickness for Which Designed0.050 INCHES SECOND END IN
Nominal Overall Length1.875 INCHES IN
Tubing Wall Nominal Thickness for Which Designed0.050 INCHES FIRST END IN
Specification/standard Data80204-ANSI B16.22 PROFESSIONAL/INDUSTRIAL ASSOCIATION SPECIFICATION
Connection StyleSOCKET (TUBE) FIRST END
MaterialCOPPER ALLOY OVERALL
Connection TypeUNTHREADED INTERNAL TUBE FIRST END
Departure From Cited DocumentAS MODIFIED BY MATERIAL
Reducer TypeCONCENTRIC
Lifecycle & Compliance
Acquisition StatusCANCELLED
HAZMATNo
Verified Substitutes 12
4730-00-053-0624W-2388 INTERCHANGEABLE
Elbow,tube
Mueller Brass Co.
4730-00-265-7019 INTERCHANGEABLE
Cap,tube
4730-00-265-7020 INTERCHANGEABLE
Cap,tube
4730-00-289-1271 INTERCHANGEABLE
Elbow,tube
4730-00-359-7052W2131 INTERCHANGEABLE
Elbow,pipe to Tube
Mueller Brass Co.
4730-00-702-8804 INTERCHANGEABLE
Adapter,straight,pipe to Tube
4730-00-722-1295 INTERCHANGEABLE
Coupling,tube
4730-00-722-3579 INTERCHANGEABLE
Adapter,straight,pipe to Tube
4730-00-813-3193 INTERCHANGEABLE
Elbow,tube
4730-00-818-3872W2049 INTERCHANGEABLE
Elbow,tube
Mueller Brass Co.
Cross-Reference Index
Part NumberManufacturer
ASME B16.22 The American Society of Mechanical Engineers (USA)
11241658-12 Ballistic Missile Defense Systems Command (USA)
ANSIB16.22 American National Standards Institute Incorporated Dba American National Standards Institute (USA)
W1339 PRIMARY Mueller Brass Co. (USA)
Related Parts
4730-00-053-0624INTERCHANGEABLE
ELBOW,TUBE
W-2388
4730-00-265-7019INTERCHANGEABLE
CAP,TUBE
4730-00-265-7020INTERCHANGEABLE
CAP,TUBE
4730-00-289-1271INTERCHANGEABLE
ELBOW,TUBE
4730-00-359-7052INTERCHANGEABLE
ELBOW,PIPE TO TUBE
W2131
4730-00-702-8804INTERCHANGEABLE
ADAPTER,STRAIGHT,PIPE TO TUBE
4730-00-722-1295INTERCHANGEABLE
COUPLING,TUBE
4730-00-722-3579INTERCHANGEABLE
ADAPTER,STRAIGHT,PIPE TO TUBE
4730-00-813-3193INTERCHANGEABLE
ELBOW,TUBE
4730-00-818-3872INTERCHANGEABLE
ELBOW,TUBE
W2049
4730-00-818-5190INTERCHANGEABLE
ELBOW,TUBE
4730-00-825-2490INTERCHANGEABLE
ELBOW,TUBE

Frequently Asked Questions

What is NSN 4730-00-808-7817?

NSN 4730-00-808-7817 is a Reducer,tube, manufactured by Mueller Brass Co., classified under FSC 4730 (No Item Name Available). Status: cancelled.

What are the part numbers for NSN 4730-00-808-7817?

NSN 4730-00-808-7817 has 4 cross-referenced part numbers: ASME B16.22 (The American Society of Mechanical Engineers), 11241658-12 (Ballistic Missile Defense Systems Command), ANSIB16.22 (American National Standards Institute Incorporated Dba American National Standards Institute), W1339 (Mueller Brass Co.).

What NSN replaces 4730-00-808-7817?

There are 12 known substitutes for 4730-00-808-7817: 4730-00-053-0624, 4730-00-265-7019, 4730-00-265-7020 and 9 more. Verify interchangeability with system specifications before substitution.

What are the specifications of W1339?

Key specifications for W1339: Nominal Outside Diameter Tube Accommodated: 1.000 INCHES SECOND END IN; Connection Style: PLAIN (TUBE) SECOND END; Connection Type: UNTHREADED EXTERNAL TUBE SECOND END; Nominal Outside Diameter Tube Accommodated: 0.500 INCHES FIRST END IN. 13 total characteristics are documented in the Federal Logistics Information System.

Is NSN 4730-00-808-7817 still in active supply?

NSN 4730-00-808-7817 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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