PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

A-1667Adapter,straight,pipe to Tube

Mueller Brass Co. · NSN 4730-00-278-0292 · FSC 4730 · No Item Name Available
Verified by PartsTable
NSN 4730-00-278-0292 — this item is cataloged by the U.S. Government under National Stock Number 4730-00-278-0292. Primary manufacturer part number: A-1667.
Features
  • Adapter,straight,pipe to Tube — FSC 4730
  • Connection Type: UNTHREADED INTERNAL TUBE FIRST END
  • Connection Style: GROOVED INSIDE (TUBE) FIRST END
  • Nominal Outside Diameter Tube Accommodated: 1.500 INCHES FIRST END IN
  • Nominal Thread Size: 1.500 INCHES SECOND END IN
  • Connection Type: THREADED INTERNAL PIPE SECOND END
  • Nominal Overall Length: 2.438 INCHES IN
  • Nominal Pipe Size Accommodated: 1.500 INCHES SECOND END IN
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 4730-00-278-0292, 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 10 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 2 commercial cross-references from 2 manufacturers, enabling identification through both NSN and commercial part number lookups. 12 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.

Technical Specifications
ParameterValue
NSN4730-00-278-0292
Primary Part NumberA-1667
Item NameAdapter,straight,pipe to Tube
FSC / FSG4730 / 47 — No Item Name Available
ManufacturerMueller Brass Co.
StatusACTIVE
Connection TypeUNTHREADED INTERNAL TUBE FIRST END
Connection StyleGROOVED INSIDE (TUBE) FIRST END
Nominal Outside Diameter Tube Accommodated1.500 INCHES FIRST END IN
Nominal Thread Size1.500 INCHES SECOND END IN
Connection TypeTHREADED INTERNAL PIPE SECOND END
Nominal Overall Length2.438 INCHES IN
Nominal Pipe Size Accommodated1.500 INCHES SECOND END IN
Thread Series DesignatorNPT SECOND END
Connection StylePLAIN (PIPE) SECOND END
MaterialCOPPER ALLOY OVERALL
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 12
4730-00-324-3459 INTERCHANGEABLE
Adapter,straight,pipe to Tube
4730-00-328-5193 INTERCHANGEABLE
Adapter,straight,pipe to Tube
4730-00-328-5198 INTERCHANGEABLE
Adapter,straight,pipe to Tube
4730-00-328-5229B16.18 1 1/4X1X3/4 INTERCHANGEABLE
Tee,tube
The American Society of Mechanical Engineers
4730-00-541-4753 INTERCHANGEABLE
Adapter,straight,pipe to Tube
5915-00-552-1298FA1536C INTERCHANGEABLE
Filter,radio Frequency Interfere
Ems Development Corporation Dba Ems Development Corp
5950-00-899-3396SM-B-414071 INTERCHANGEABLE
Coil,radio Frequency
Us Army Communications & Electronics Materiel Readiness Command Logistics Engineering Dir
4730-00-957-5400A2607 INTERCHANGEABLE
Elbow,pipe to Tube
Mueller Brass Co.
5935-01-160-86977101943-10 INTERCHANGEABLE
Connector,plug,electrical
Lockheed Martin Corp Dba Lockheed Martin Div Mst - Eagan
8455-01-528-9534 INTERCHANGEABLE
Insignia,shoulder Sleeve
Cross-Reference Index
Part NumberManufacturer
A-1667 Mueller Brass Co. (USA)
ANSI B16.18 American National Standards Institute Incorporated Dba American National Standards Institute (USA)
Related Parts
4730-00-324-3459INTERCHANGEABLE
ADAPTER,STRAIGHT,PIPE TO TUBE
4730-00-328-5193INTERCHANGEABLE
ADAPTER,STRAIGHT,PIPE TO TUBE
4730-00-328-5198INTERCHANGEABLE
ADAPTER,STRAIGHT,PIPE TO TUBE
4730-00-328-5229INTERCHANGEABLE
TEE,TUBE
B16.18 1 1/4X1X3/4
4730-00-541-4753INTERCHANGEABLE
ADAPTER,STRAIGHT,PIPE TO TUBE
5915-00-552-1298INTERCHANGEABLE
FILTER,RADIO FREQUENCY INTERFERE
FA1536C
5950-00-899-3396INTERCHANGEABLE
COIL,RADIO FREQUENCY
SM-B-414071
4730-00-957-5400INTERCHANGEABLE
ELBOW,PIPE TO TUBE
A2607
5935-01-160-8697INTERCHANGEABLE
CONNECTOR,PLUG,ELECTRICAL
7101943-10
8455-01-528-9534INTERCHANGEABLE
INSIGNIA,SHOULDER SLEEVE
8455-01-659-8788INTERCHANGEABLE
INSIGNIA,SHOULDER SLEEVE
8455-01-713-7077INTERCHANGEABLE
INSIGNIA,SHOULDER SLEEVE

Frequently Asked Questions

What is NSN 4730-00-278-0292?

NSN 4730-00-278-0292 is a Adapter,straight,pipe to Tube, manufactured by Mueller Brass Co., classified under FSC 4730 (No Item Name Available). Status: active.

What are the part numbers for NSN 4730-00-278-0292?

NSN 4730-00-278-0292 has 2 cross-referenced part numbers: A-1667 (Mueller Brass Co.), ANSI B16.18 (American National Standards Institute Incorporated Dba American National Standards Institute).

What NSN replaces 4730-00-278-0292?

There are 12 known substitutes for 4730-00-278-0292: 4730-00-324-3459, 4730-00-328-5193, 4730-00-328-5198 and 9 more. Verify interchangeability with system specifications before substitution.

What are the specifications of A-1667?

Key specifications for A-1667: Connection Type: UNTHREADED INTERNAL TUBE FIRST END; Connection Style: GROOVED INSIDE (TUBE) FIRST END; Nominal Outside Diameter Tube Accommodated: 1.500 INCHES FIRST END IN; Nominal Thread Size: 1.500 INCHES SECOND END IN. 10 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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