PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

B16.18Elbow,pipe to Tube

American National Standards Institute Incorporated Dba American National Standards Institute · NSN 4730-00-841-8431 · FSC 4730 · No Item Name Available
Verified by PartsTable
NSN 4730-00-841-8431 — this item is cataloged by the U.S. Government under National Stock Number 4730-00-841-8431. Primary manufacturer part number: B16.18.
Features
  • Elbow,pipe to Tube — FSC 4730
  • Tubing Wall Nominal Thickness for Which Designed: 0.035 INCHES FIRST END IN
  • Nominal Pipe Size Accommodated: 0.250 INCHES SECOND END IN
  • Connection Type: THREADED EXTERNAL PIPE SECOND END
  • Nominal Thread Size: 0.500 INCHES SECOND END IN
  • Connection Style: PLAIN (TUBE) FIRST END
  • Nominal Outside Diameter Tube Accommodated: 0.625 INCHES FIRST END IN
  • Material: COPPER ALLOY OVERALL
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 4730-00-841-8431, 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 13 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: Active.

Technical Specifications
ParameterValue
NSN4730-00-841-8431
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
StatusACTIVE
Tubing Wall Nominal Thickness for Which Designed0.035 INCHES FIRST END IN
Nominal Pipe Size Accommodated0.250 INCHES SECOND END IN
Connection TypeTHREADED EXTERNAL PIPE SECOND END
Nominal Thread Size0.500 INCHES SECOND END IN
Connection StylePLAIN (TUBE) FIRST END
Nominal Outside Diameter Tube Accommodated0.625 INCHES FIRST END IN
MaterialCOPPER ALLOY OVERALL
Leg Length0.937 INCHES NOMINAL FIRST END IN
Connection StylePLAIN (PIPE) SECOND END
Leg Length1.281 INCHES NOMINAL SECOND END IN
Flow Angle90.0 DEGREES
Connection TypeUNTHREADED INTERNAL TUBE FIRST END
Thread Series DesignatorNPT SECOND END
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 12
4730-00-059-7220 INTERCHANGEABLE
Coupling,tube
8455-00-198-8778 INTERCHANGEABLE
Insignia,shoulder Sleeve
8455-00-198-9071 INTERCHANGEABLE
Insignia,shoulder Sleeve
4730-00-202-8416 INTERCHANGEABLE
Elbow,pipe to Tube
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
2520-00-737-496625Q1056 INTERCHANGEABLE
Lever,front Wheel
Dana Corp Spicer Transmission Div
4730-00-816-0764A1511 INTERCHANGEABLE
Tee,tube
Mueller Brass Co.
Cross-Reference Index
Part NumberManufacturer
B16.18 American National Standards Institute Incorporated Dba American National Standards Institute (USA)
A1506 Mueller Brass Co. (USA)
707-4-1-2X1-2 Nibco Inc (USA)
Related Parts
4730-00-059-7220INTERCHANGEABLE
COUPLING,TUBE
8455-00-198-8778INTERCHANGEABLE
INSIGNIA,SHOULDER SLEEVE
8455-00-198-9071INTERCHANGEABLE
INSIGNIA,SHOULDER SLEEVE
4730-00-202-8416INTERCHANGEABLE
ELBOW,PIPE TO TUBE
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
2520-00-737-4966INTERCHANGEABLE
LEVER,FRONT WHEEL
25Q1056
4730-00-816-0764INTERCHANGEABLE
TEE,TUBE
A1511
4730-00-857-5387INTERCHANGEABLE
ELBOW,PIPE TO TUBE
4730-00-857-5389INTERCHANGEABLE
ELBOW,PIPE TO TUBE

Frequently Asked Questions

What is NSN 4730-00-841-8431?

NSN 4730-00-841-8431 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: active.

What are the part numbers for NSN 4730-00-841-8431?

NSN 4730-00-841-8431 has 3 cross-referenced part numbers: B16.18 (American National Standards Institute Incorporated Dba American National Standards Institute), A1506 (Mueller Brass Co.), 707-4-1-2X1-2 (Nibco Inc).

What NSN replaces 4730-00-841-8431?

There are 12 known substitutes for 4730-00-841-8431: 4730-00-059-7220, 8455-00-198-8778, 8455-00-198-9071 and 9 more. Verify interchangeability with system specifications before substitution.

What are the specifications of B16.18?

Key specifications for B16.18: Tubing Wall Nominal Thickness for Which Designed: 0.035 INCHES FIRST END IN; Nominal Pipe Size Accommodated: 0.250 INCHES SECOND END IN; Connection Type: THREADED EXTERNAL PIPE SECOND END; Nominal Thread Size: 0.500 INCHES SECOND END IN. 13 total characteristics are documented in the Federal Logistics Information System.

Validated with multiple authoritative sources, including Government, OEM, and Certified sources.
PartsTable Design LLC · partstable.com