PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

202123-18-16BAdapter,straight,tube to Boss

Danfoss Power Solutions II, Llc · NSN 4730-01-092-1685 · FSC 4730 · No Item Name Available
Verified by PartsTable
NSN 4730-01-092-1685 — this item is cataloged by the U.S. Government under National Stock Number 4730-01-092-1685. Primary manufacturer part number: 202123-18-16B.
Features
  • Adapter,straight,tube to Boss — FSC 4730
  • Connection Style: PLAIN (TUBE) FIRST END
  • Connection Type: UNTHREADED INTERNAL TUBE FIRST END
  • Furnished Items and Quantity: 1 PREFORMED PACKING
  • Connection Style: EXTERNAL SEAT FOR GASKET SEAL (BOSS) SECOND END
  • Nominal Overall Length: 2.030 INCHES IN
  • Thread Class: 2A SECOND END A
  • Thread Quantity Per Inch: 12 SECOND END
Applications
  • Fluid conveyance
  • Hydraulic system plumbing
  • Pneumatic line routing
  • Applications requiring Copper Alloy Overall construction
General Description

The Adapter,straight,tube to Boss, cataloged under National Stock Number 4730-01-092-1685, 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 Danfoss Power Solutions II, Llc. Government technical data includes 12 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 4 commercial cross-references from 3 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
NSN4730-01-092-1685
Primary Part Number202123-18-16B
Item NameAdapter,straight,tube to Boss
FSC / FSG4730 / 47 — No Item Name Available
ManufacturerDanfoss Power Solutions II, Llc
StatusACTIVE
Connection StylePLAIN (TUBE) FIRST END
Connection TypeUNTHREADED INTERNAL TUBE FIRST END
Furnished Items and Quantity1 PREFORMED PACKING
Connection StyleEXTERNAL SEAT FOR GASKET SEAL (BOSS) SECOND END
Nominal Overall Length2.030 INCHES IN
Thread Class2A SECOND END A
Thread Quantity Per Inch12 SECOND END
Nominal Thread Size1.312 INCHES SECOND END IN
Connection TypeTHREADED EXTERNAL BOSS SECOND END
Nominal Outside Diameter Tube Accommodated1.125 INCHES FIRST END IN
Thread Series DesignatorUN SECOND END
MaterialCOPPER ALLOY OVERALL
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 3
5905-00-106-1278 INTERCHANGEABLE
Resistor,fixed,composition
2520-00-593-1509 INTERCHANGEABLE
Lever,universal
6515-01-470-8519202123 INTERCHANGEABLE
Tip,ear,tympanometer
Biologic Systems Corp
Cross-Reference Index
Part NumberManufacturer
202123-18-16B PRIMARY Danfoss Power Solutions II, Llc (USA)
17-00-6386 Electric Boat Corporation Div General Dynamics Electric Boat (USA)
202123 Danfoss Power Solutions II, Llc (USA)
202123-18-16B Eaton Aeroquip Llc Dba Jackson North 1 Div Fluid and Electrical Distribution (USA)
Related Parts
5905-00-106-1278INTERCHANGEABLE
RESISTOR,FIXED,COMPOSITION
2520-00-593-1509INTERCHANGEABLE
LEVER,UNIVERSAL
6515-01-470-8519INTERCHANGEABLE
TIP,EAR,TYMPANOMETER
202123

Frequently Asked Questions

What is NSN 4730-01-092-1685?

NSN 4730-01-092-1685 is a Adapter,straight,tube to Boss, manufactured by Danfoss Power Solutions II, Llc, classified under FSC 4730 (No Item Name Available). Status: active.

What are the part numbers for NSN 4730-01-092-1685?

NSN 4730-01-092-1685 has 4 cross-referenced part numbers: 202123-18-16B (Danfoss Power Solutions II, Llc), 17-00-6386 (Electric Boat Corporation Div General Dynamics Electric Boat), 202123 (Danfoss Power Solutions II, Llc), 202123-18-16B (Eaton Aeroquip Llc Dba Jackson North 1 Div Fluid and Electrical Distribution).

What NSN replaces 4730-01-092-1685?

There are 3 known substitutes for 4730-01-092-1685: 5905-00-106-1278, 2520-00-593-1509, 6515-01-470-8519. Verify interchangeability with system specifications before substitution.

What are the specifications of 202123-18-16B?

Key specifications for 202123-18-16B: Connection Style: PLAIN (TUBE) FIRST END; Connection Type: UNTHREADED INTERNAL TUBE FIRST END; Furnished Items and Quantity: 1 PREFORMED PACKING; Connection Style: EXTERNAL SEAT FOR GASKET SEAL (BOSS) SECOND END. 12 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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