PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

ASMEB16.39-38-T-AUnion,pipe

The American Society of Mechanical Engineers · NSN 4730-00-189-2627 · FSC 4730 · No Item Name Available
Verified by PartsTable
NSN 4730-00-189-2627 — this item is cataloged by the U.S. Government under National Stock Number 4730-00-189-2627. Primary manufacturer part number: ASMEB16.39-38-T-A.
Features
  • Union,pipe — FSC 4730
  • Surface Treatment: ZINC OVERALL
  • Surface Treatment Document and Classification: QQ-Z-325,TY1 FED SPEC SINGLE TREATMENT RESPONSE OR ASTMA153 ASSN STD SINGLE TREATMENT RESPONSE OVERALL
  • Nominal Thread Size: 1.000 INCHES ALL ENDS IN
  • Seat Type: GROUND-JOINT
  • Operating Pressure: 500.0 POUNDS PER SQUARE INCH (PSI) MAXIMUM SINGLE RESPONSE LBS
  • Nondefinitive Spec/std Data: 250 CLASS AND 1IN. SIZE IN
  • Reducer Type: CONCENTRIC
Applications
  • Fluid conveyance
  • Hydraulic system plumbing
  • Pneumatic line routing
  • Applications requiring Copper Alloy Seat construction
General Description

The Union,pipe, cataloged under National Stock Number 4730-00-189-2627, 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 The American Society of Mechanical Engineers. Government technical data includes 26 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 8 commercial cross-references from 4 manufacturers, enabling identification through both NSN and commercial part number lookups. 2 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Cancelled.

Technical Specifications
ParameterValue
NSN4730-00-189-2627
Primary Part NumberASMEB16.39-38-T-A
Item NameUnion,pipe
FSC / FSG4730 / 47 — No Item Name Available
ManufacturerThe American Society of Mechanical Engineers
StatusCANCELLED
Surface TreatmentZINC OVERALL
Surface Treatment Document and ClassificationQQ-Z-325,TY1 FED SPEC SINGLE TREATMENT RESPONSE OR ASTMA153 ASSN STD SINGLE TREATMENT RESPONSE OVERALL
Nominal Thread Size1.000 INCHES ALL ENDS IN
Seat TypeGROUND-JOINT
Operating Pressure500.0 POUNDS PER SQUARE INCH (PSI) MAXIMUM SINGLE RESPONSE LBS
Nondefinitive Spec/std Data250 CLASS AND 1IN. SIZE IN
Reducer TypeCONCENTRIC
Coupling Flange ShapeHEXAGON
Nominal Thread Size1.000 INCHES ALL ENDS IN
MaterialCOPPER ALLOY SEAT
Nominal Overall Length2.310 INCHES IN
MaterialCOPPER ALLOY SEAT
Thread Series DesignatorNPT ALL ENDS
Style DesignatorSCREWED
Connection TypeTHREADED INTERNAL PIPE ALL ENDS
Seat TypeGROUND-JOINT
Maximum Operating Temp218.0 CELSIUS SINGLE RESPONSE DEGC
Surface TreatmentZINC OVERALL
Style DesignatorSCREWED
Connection StylePLAIN (PIPE) ALL ENDS
Nondefinitive Spec/std Data250 CLASS AND 1IN. SIZE IN
Coupling Flange ShapeHEXAGON
Operating Pressure500.0 POUNDS PER SQUARE INCH (PSI) MAXIMUM SINGLE RESPONSE LBS
Surface Treatment Document and ClassificationQQ-Z-325,TY1 FED SPEC SINGLE TREATMENT RESPONSE OR ASTMA153 ASSN STD SINGLE TREATMENT RESPONSE OVERALL
Nominal Overall Length2.310 INCHES IN
Thread Series DesignatorNPT ALL ENDS
Lifecycle & Compliance
Acquisition StatusCANCELLED
HAZMATNo
Verified Substitutes 2
4730-01-306-62791.G250U INTERCHANGEABLE
Union,pipe
Ward Mfg Inc
5305-01-597-80200001389 INTERCHANGEABLE
Screw,cap,socket Head
Sss Clutch Co, Inc
Cross-Reference Index
Part NumberManufacturer
D11076-20-16 Met-Pro Corporation (USA)
B16.39 American National Standards Institute Incorporated Dba American National Standards Institute (USA)
MPD9484-58-30 Met-Pro Corporation (USA)
179691 Army Weapons Command Attn Amswe-Ree-S (USA)
ASMEB16.39-38-T-A PRIMARY The American Society of Mechanical Engineers (USA)
ASMEB16.39-38-T-A American National Standards Institute Incorporated Dba American National Standards Institute (USA)
ASME-B16.39 The American Society of Mechanical Engineers (USA)
0001389 Met-Pro Corporation (USA)
Related Parts
4730-01-306-6279INTERCHANGEABLE
UNION,PIPE
1.G250U
5305-01-597-8020INTERCHANGEABLE
SCREW,CAP,SOCKET HEAD
0001389

Frequently Asked Questions

What is NSN 4730-00-189-2627?

NSN 4730-00-189-2627 is a Union,pipe, manufactured by The American Society of Mechanical Engineers, classified under FSC 4730 (No Item Name Available). Status: cancelled.

What are the part numbers for NSN 4730-00-189-2627?

NSN 4730-00-189-2627 has 8 cross-referenced part numbers: D11076-20-16 (Met-Pro Corporation), B16.39 (American National Standards Institute Incorporated Dba American National Standards Institute), MPD9484-58-30 (Met-Pro Corporation), 179691 (Army Weapons Command Attn Amswe-Ree-S), ASMEB16.39-38-T-A (The American Society of Mechanical Engineers) and 3 more.

What NSN replaces 4730-00-189-2627?

There are 2 known substitutes for 4730-00-189-2627: 4730-01-306-6279, 5305-01-597-8020. Verify interchangeability with system specifications before substitution.

What are the specifications of ASMEB16.39-38-T-A?

Key specifications for ASMEB16.39-38-T-A: Surface Treatment: ZINC OVERALL; Surface Treatment Document and Classification: QQ-Z-325,TY1 FED SPEC SINGLE TREATMENT RESPONSE OR ASTMA153 ASSN STD SINGLE TREATMENT RESPONSE OVERALL; Nominal Thread Size: 1.000 INCHES ALL ENDS IN; Seat Type: GROUND-JOINT. 26 total characteristics are documented in the Federal Logistics Information System.

Is NSN 4730-00-189-2627 still in active supply?

NSN 4730-00-189-2627 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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