PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

B16-18Elbow,pipe to Tube

American National Standards Institute Incorporated Dba American National Standards Institute · NSN 4730-00-857-5389 · FSC 4730 · No Item Name Available
Verified by PartsTable
NSN 4730-00-857-5389 — this item is cataloged by the U.S. Government under National Stock Number 4730-00-857-5389. Primary manufacturer part number: B16-18.
Features
  • Elbow,pipe to Tube — FSC 4730
  • Connection Type: UNTHREADED INTERNAL TUBE FIRST END
  • Leg Length: 0.938 INCHES NOMINAL SECOND END IN
  • Connection Style: SOCKET (TUBE) FIRST END
  • Nondefinitive Spec/std Data: 2 TYPE
  • Tubing Wall Nominal Thickness for Which Designed: 0.035 INCHES FIRST END IN
  • Leg Length: 1.188 INCHES NOMINAL FIRST END IN
  • Nominal Outside Diameter Tube Accommodated: 0.629 INCHES FIRST END IN
Applications
  • Fluid conveyance
  • Hydraulic system plumbing
  • Pneumatic line routing
  • Applications requiring Copper Alloy Overall construction
General Description

The Elbow,pipe to Tube, cataloged under National Stock Number 4730-00-857-5389, 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 American National Standards Institute Incorporated Dba American National Standards Institute. Government technical data includes 15 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: Cancelled.

Technical Specifications
ParameterValue
NSN4730-00-857-5389
Primary Part NumberB16-18
Item NameElbow,pipe to Tube
FSC / FSG4730 / 47 — No Item Name Available
ManufacturerAmerican National Standards Institute Incorporated Dba American National Standards Institute
StatusCANCELLED
Connection TypeUNTHREADED INTERNAL TUBE FIRST END
Leg Length0.938 INCHES NOMINAL SECOND END IN
Connection StyleSOCKET (TUBE) FIRST END
Nondefinitive Spec/std Data2 TYPE
Tubing Wall Nominal Thickness for Which Designed0.035 INCHES FIRST END IN
Leg Length1.188 INCHES NOMINAL FIRST END IN
Nominal Outside Diameter Tube Accommodated0.629 INCHES FIRST END IN
Nominal Pipe Size Accommodated0.750 INCHES SECOND END IN
Thread Series DesignatorNPT SECOND END
Connection TypeTHREADED INTERNAL PIPE SECOND END
Connection StylePLAIN (PIPE) SECOND END
MaterialCOPPER ALLOY OVERALL
Material Document and ClassificationASTM B62 ASSN STD 1ST MATERIAL RESPONSE OR ASTM B145,ALLOY 4B ASSN STD 2ND MATERIAL RESPONSE OVERALL
Flow Angle90.0 DEGREES
Nominal Thread Size0.750 INCHES SECOND END IN
Lifecycle & Compliance
Acquisition StatusCANCELLED
HAZMATNo
Verified Substitutes 12
4730-00-059-7220 INTERCHANGEABLE
Coupling,tube
4730-00-202-8416 INTERCHANGEABLE
Elbow,pipe to Tube
4730-00-265-7015W7007 INTERCHANGEABLE
Cap,tube
Mueller Brass Co.
4730-00-289-4825 INTERCHANGEABLE
Coupling,tube
4730-00-328-5229B16.18 1 1/4X1X3/4 INTERCHANGEABLE
Tee,tube
The American Society of Mechanical Engineers
4730-00-614-6051 INTERCHANGEABLE
Tee,pipe to Tube
4730-00-689-8534 INTERCHANGEABLE
Adapter,straight,pipe to Tube
4730-00-816-0764A1511 INTERCHANGEABLE
Tee,tube
Mueller Brass Co.
4730-00-841-8431 INTERCHANGEABLE
Elbow,pipe to Tube
4730-00-857-5387 INTERCHANGEABLE
Elbow,pipe to Tube
Cross-Reference Index
Part NumberManufacturer
B16-18 American National Standards Institute Incorporated Dba American National Standards Institute (USA)
WWT00725 Federal Specifications Promulgated by General Services Administration Washington DC (USA)
Related Parts
4730-00-059-7220INTERCHANGEABLE
COUPLING,TUBE
4730-00-202-8416INTERCHANGEABLE
ELBOW,PIPE TO TUBE
4730-00-265-7015INTERCHANGEABLE
CAP,TUBE
W7007
4730-00-289-4825INTERCHANGEABLE
COUPLING,TUBE
4730-00-328-5229INTERCHANGEABLE
TEE,TUBE
B16.18 1 1/4X1X3/4
4730-00-614-6051INTERCHANGEABLE
TEE,PIPE TO TUBE
4730-00-689-8534INTERCHANGEABLE
ADAPTER,STRAIGHT,PIPE TO TUBE
4730-00-816-0764INTERCHANGEABLE
TEE,TUBE
A1511
4730-00-841-8431INTERCHANGEABLE
ELBOW,PIPE TO TUBE
4730-00-857-5387INTERCHANGEABLE
ELBOW,PIPE TO TUBE
4730-01-013-6131INTERCHANGEABLE
ADAPTER,STRAIGHT,PIPE TO TUBE
A1620
4730-01-016-3007INTERCHANGEABLE
ADAPTER,STRAIGHT,PIPE TO TUBE

Frequently Asked Questions

What is NSN 4730-00-857-5389?

NSN 4730-00-857-5389 is a Elbow,pipe to Tube, manufactured by American National Standards Institute Incorporated Dba American National Standards Institute, classified under FSC 4730 (No Item Name Available). Status: cancelled.

What are the part numbers for NSN 4730-00-857-5389?

NSN 4730-00-857-5389 has 2 cross-referenced part numbers: B16-18 (American National Standards Institute Incorporated Dba American National Standards Institute), WWT00725 (Federal Specifications Promulgated by General Services Administration Washington DC).

What NSN replaces 4730-00-857-5389?

There are 12 known substitutes for 4730-00-857-5389: 4730-00-059-7220, 4730-00-202-8416, 4730-00-265-7015 and 9 more. Verify interchangeability with system specifications before substitution.

What are the specifications of B16-18?

Key specifications for B16-18: Connection Type: UNTHREADED INTERNAL TUBE FIRST END; Leg Length: 0.938 INCHES NOMINAL SECOND END IN; Connection Style: SOCKET (TUBE) FIRST END; Nondefinitive Spec/std Data: 2 TYPE. 15 total characteristics are documented in the Federal Logistics Information System.

Is NSN 4730-00-857-5389 still in active supply?

NSN 4730-00-857-5389 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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