PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

20646Adapter,straight,pipe to Tube

Generac Mobile Products, Llc · NSN 4730-01-651-9915 · FSC 4730 · No Item Name Available
Verified by PartsTable
NSN 4730-01-651-9915 — this item is cataloged by the U.S. Government under National Stock Number 4730-01-651-9915. Primary manufacturer part number: 20646.
Features
  • Adapter,straight,pipe to Tube — FSC 4730
  • Thread Quantity Per Inch: 18 SECOND END
  • Connection Type: UNTHREADED INTERNAL TUBE FIRST END
  • Style Designator: INSERT AND THREADED EXTERNAL
  • Nominal Width Across Flats: 0.63 INCHES SECOND END IN
  • Leg Length: 0.96 INCHES NOMINAL FIRST END IN
  • Nominal Overall Length: 1.69 INCHES IN
  • Nominal Outside Diameter: 0.375 INCHES FIRST 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 4730-01-651-9915, 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 Generac Mobile Products, Llc. 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. 9 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.

Technical Specifications
ParameterValue
NSN4730-01-651-9915
Primary Part Number20646
Item NameAdapter,straight,pipe to Tube
FSC / FSG4730 / 47 — No Item Name Available
ManufacturerGenerac Mobile Products, Llc
StatusACTIVE
Thread Quantity Per Inch18 SECOND END
Connection TypeUNTHREADED INTERNAL TUBE FIRST END
Style DesignatorINSERT AND THREADED EXTERNAL
Nominal Width Across Flats0.63 INCHES SECOND END IN
Leg Length0.96 INCHES NOMINAL FIRST END IN
Nominal Overall Length1.69 INCHES IN
Nominal Outside Diameter0.375 INCHES FIRST END IN
Nominal Thread Size0.375 INCHES SECOND END IN
Connection TypeTHREADED EXTERNAL PIPE SECOND END
Leg Length0.51 INCHES NOMINAL SECOND END IN
Connection StyleBARBED AND BEADED FIRST END
Thread Series DesignatorNPTF SECOND END
MaterialCOPPER ALLOY OVERALL
Connection StylePLAIN (PIPE) SECOND END
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 9
5330-00-044-06232206-0038 INTERCHANGEABLE
Rubber Strip
Cmc of Georgia, Inc.
5133-00-236-4028 INTERCHANGEABLE
Drill,twist
5355-00-434-4221 INTERCHANGEABLE
Knob
3455-00-516-5071 INTERCHANGEABLE
Reamer,machine
4730-00-740-25825179937 INTERCHANGEABLE
Nut,tube Coupling
Rolls-Royce Solutions America Inc
2920-01-229-544420646 INTERCHANGEABLE
Armature Assembly
Real-Time Laboratories, Llc
5975-01-298-3733206-46 INTERCHANGEABLE
Conduit Assembly,flexible
Dcx-Chol Enterprises, Inc.
5310-01-433-702820646 INTERCHANGEABLE
Washer,lock
Triumph Actuation Systems - Valencia, Inc. Dba Triumph Actuation Systems - Valencia Inc Div Triumph Actuation Systems-Val
6505-01-612-9939 INTERCHANGEABLE
Amyl Nitrite Inhalant
Cross-Reference Index
Part NumberManufacturer
NX93 Adams Nut and Bolt Co Inc (USA)
20646 PRIMARY Generac Mobile Products, Llc (USA)
Related Parts
5330-00-044-0623INTERCHANGEABLE
RUBBER STRIP
2206-0038
5133-00-236-4028INTERCHANGEABLE
DRILL,TWIST
5355-00-434-4221INTERCHANGEABLE
KNOB
3455-00-516-5071INTERCHANGEABLE
REAMER,MACHINE
4730-00-740-2582INTERCHANGEABLE
NUT,TUBE COUPLING
5179937
2920-01-229-5444INTERCHANGEABLE
ARMATURE ASSEMBLY
20646
5975-01-298-3733INTERCHANGEABLE
CONDUIT ASSEMBLY,FLEXIBLE
206-46
5310-01-433-7028INTERCHANGEABLE
WASHER,LOCK
20646
6505-01-612-9939INTERCHANGEABLE
AMYL NITRITE INHALANT

Frequently Asked Questions

What is NSN 4730-01-651-9915?

NSN 4730-01-651-9915 is a Adapter,straight,pipe to Tube, manufactured by Generac Mobile Products, Llc, classified under FSC 4730 (No Item Name Available). Status: active.

What are the part numbers for NSN 4730-01-651-9915?

NSN 4730-01-651-9915 has 2 cross-referenced part numbers: NX93 (Adams Nut and Bolt Co Inc), 20646 (Generac Mobile Products, Llc).

What NSN replaces 4730-01-651-9915?

There are 9 known substitutes for 4730-01-651-9915: 5330-00-044-0623, 5133-00-236-4028, 5355-00-434-4221 and 6 more. Verify interchangeability with system specifications before substitution.

What are the specifications of 20646?

Key specifications for 20646: End Item Identification: 6115015911161; Thread Quantity Per Inch: 18 SECOND END; Connection Type: UNTHREADED INTERNAL TUBE FIRST END; Style Designator: INSERT AND THREADED EXTERNAL. 15 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