PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

B70-1Adapter,straight,pipe to Tube

American National Standards Institute Incorporated Dba American National Standards Institute · NSN 4730-00-845-6081 · FSC 4730 · No Item Name Available
Verified by PartsTable
NSN 4730-00-845-6081 — this item is cataloged by the U.S. Government under National Stock Number 4730-00-845-6081. Primary manufacturer part number: B70-1.
Features
  • Adapter,straight,pipe to Tube — FSC 4730
  • Nominal Thread Size: 0.750 INCHES FIRST END IN
  • Nominal Outside Diameter Tube Accommodated: 0.500 INCHES FIRST END IN
  • Nominal Thread Size: 0.250 INCHES SECOND END IN
  • Connection Style: FLARED (TUBE) FIRST END
  • Thread Series Designator: NPTF SECOND END
  • Connection Style: PLAIN (PIPE) SECOND END
  • Connection Type: THREADED EXTERNAL PIPE SECOND END
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 4730-00-845-6081, 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 14 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. 3 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.

Technical Specifications
ParameterValue
NSN4730-00-845-6081
Primary Part NumberB70-1
Item NameAdapter,straight,pipe to Tube
FSC / FSG4730 / 47 — No Item Name Available
ManufacturerAmerican National Standards Institute Incorporated Dba American National Standards Institute
StatusACTIVE
Nominal Thread Size0.750 INCHES FIRST END IN
Nominal Outside Diameter Tube Accommodated0.500 INCHES FIRST END IN
Nominal Thread Size0.250 INCHES SECOND END IN
Connection StyleFLARED (TUBE) FIRST END
Thread Series DesignatorNPTF SECOND END
Connection StylePLAIN (PIPE) SECOND END
Connection TypeTHREADED EXTERNAL PIPE SECOND END
Nominal Pipe Size Accommodated0.250 INCHES SECOND END IN
Thread Class2A FIRST END A
Thread Series DesignatorUNF FIRST END
Seat Angle45.0 DEGREES FIRST END
Connection TypeTHREADED EXTERNAL TUBE FIRST END
MaterialCOPPER ALLOY OVERALL
Nominal Overall Length1.594 INCHES IN
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 3
6810-00-059-9069 INTERCHANGEABLE
Sodium Fluoride
4730-00-289-4202SAE J513 4-4-4 010425BA INTERCHANGEABLE
Tee,pipe to Tube
Sae International Dba Sae International
4730-00-542-579668C-6-2 INTERCHANGEABLE
Adapter,straight,pipe to Tube
Parker-Hannifin Corp Div Fluid System Connector Division
Cross-Reference Index
Part NumberManufacturer
B70-1 American National Standards Institute Incorporated Dba American National Standards Institute (USA)
648F1-2X1-4IN Imperial (USA)
Related Parts
6810-00-059-9069INTERCHANGEABLE
SODIUM FLUORIDE
4730-00-289-4202INTERCHANGEABLE
TEE,PIPE TO TUBE
SAE J513 4-4-4 010425BA
4730-00-542-5796INTERCHANGEABLE
ADAPTER,STRAIGHT,PIPE TO TUBE
68C-6-2

Frequently Asked Questions

What is NSN 4730-00-845-6081?

NSN 4730-00-845-6081 is a Adapter,straight,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 4730-00-845-6081?

NSN 4730-00-845-6081 has 2 cross-referenced part numbers: B70-1 (American National Standards Institute Incorporated Dba American National Standards Institute), 648F1-2X1-4IN (Imperial).

What NSN replaces 4730-00-845-6081?

There are 3 known substitutes for 4730-00-845-6081: 6810-00-059-9069, 4730-00-289-4202, 4730-00-542-5796. Verify interchangeability with system specifications before substitution.

What are the specifications of B70-1?

Key specifications for B70-1: Nominal Thread Size: 0.750 INCHES FIRST END IN; Nominal Outside Diameter Tube Accommodated: 0.500 INCHES FIRST END IN; Nominal Thread Size: 0.250 INCHES SECOND END IN; Connection Style: FLARED (TUBE) FIRST END. 15 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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