PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

250-20Adapter,straight,pipe to Tube

Lenz Inc Dba the Lenz Company · NSN 4730-00-569-9649 · FSC 4730 · No Item Name Available
Verified by PartsTable
NSN 4730-00-569-9649 — this item is cataloged by the U.S. Government under National Stock Number 4730-00-569-9649. Primary manufacturer part number: 250-20.
Features
  • Adapter,straight,pipe to Tube — FSC 4730
  • Connection Type: THREADED EXTERNAL TUBE FIRST END
  • Nominal Overall Length: 2.250 INCHES IN
  • Surface Treatment: CADMIUM INSIDE
  • Connection Style: GASKET SEAL, COMPRESSION (TUBE) FIRST END
  • Nominal Thread Size: 1.750 INCHES FIRST END IN
  • Thread Class: 2A FIRST END A
  • Nominal Thread Size: 1.250 INCHES SECOND END IN
Applications
  • Fluid conveyance
  • Hydraulic system plumbing
  • Pneumatic line routing
  • Applications requiring Steel Overall construction
General Description

The Adapter,straight,pipe to Tube, cataloged under National Stock Number 4730-00-569-9649, 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 Lenz Inc Dba the Lenz Company. Government technical data includes 17 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: Active.

Technical Specifications
ParameterValue
NSN4730-00-569-9649
Primary Part Number250-20
Item NameAdapter,straight,pipe to Tube
FSC / FSG4730 / 47 — No Item Name Available
ManufacturerLenz Inc Dba the Lenz Company
StatusACTIVE
Connection TypeTHREADED EXTERNAL TUBE FIRST END
Nominal Overall Length2.250 INCHES IN
Surface TreatmentCADMIUM INSIDE
Connection StyleGASKET SEAL, COMPRESSION (TUBE) FIRST END
Nominal Thread Size1.750 INCHES FIRST END IN
Thread Class2A FIRST END A
Nominal Thread Size1.250 INCHES SECOND END IN
Connection TypeTHREADED INTERNAL PIPE SECOND END
Nominal Pipe Size Accommodated1.250 INCHES SECOND END IN
Thread Series DesignatorNPTF SECOND END
Furnished Items and Quantity1 SHORT COUPLING NUT AND 1 PREFORMED PACKING AND 1 SPLIT COLLET SLEEVE AND 1 FLAT WASHER
Surface TreatmentCADMIUM OUTSIDE
Thread Series DesignatorUN FIRST END
Connection StylePLAIN (PIPE) SECOND END
MaterialSTEEL OVERALL
Thread Quantity Per Inch12 FIRST END
Nominal Outside Diameter Tube Accommodated1.250 INCHES FIRST END IN
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 12
5360-00-300-753625020 INTERCHANGEABLE
Spring,valve
Hdt Expeditionary Systems Inc
2935-00-622-7640 INTERCHANGEABLE
Cooler,lubricating Oil,engine
6125-00-635-3770 INTERCHANGEABLE
Dynamotor-Power Supply
5905-00-853-3904 INTERCHANGEABLE
Resistor,fixed,wire Wound,induct
5120-01-074-5211THD420L INTERCHANGEABLE
Inserter,screw Thread Insert
Howmet Global Fastening Systems Inc. Div Tridair Products
6685-01-174-84172-5020 INTERCHANGEABLE
Gage,differential,dial Indicatin
Dwyer Instruments Inc
4730-01-178-0297 INTERCHANGEABLE
Coupling,pipe
4710-01-185-44808J4875 INTERCHANGEABLE
Tube Assembly,metal
Caterpillar Inc Div Caterpillar Defense
4730-01-323-508925020-1-TN INTERCHANGEABLE
Coupling,pipe
Rhba Acquisitions, Llc Dba Red Head Brass
5998-01-345-1547 INTERCHANGEABLE
Circuit Card Assembly
Cross-Reference Index
Part NumberManufacturer
250-20 PRIMARY Lenz Inc Dba the Lenz Company (USA)
8735784 U S Army Tank Automotive Command Amsta-Im-Mm (USA)
Related Parts
5360-00-300-7536INTERCHANGEABLE
SPRING,VALVE
25020
2935-00-622-7640INTERCHANGEABLE
COOLER,LUBRICATING OIL,ENGINE
6125-00-635-3770INTERCHANGEABLE
DYNAMOTOR-POWER SUPPLY
5905-00-853-3904INTERCHANGEABLE
RESISTOR,FIXED,WIRE WOUND,INDUCT
5120-01-074-5211INTERCHANGEABLE
INSERTER,SCREW THREAD INSERT
THD420L
6685-01-174-8417INTERCHANGEABLE
GAGE,DIFFERENTIAL,DIAL INDICATIN
2-5020
4730-01-178-0297INTERCHANGEABLE
COUPLING,PIPE
4710-01-185-4480INTERCHANGEABLE
TUBE ASSEMBLY,METAL
8J4875
4730-01-323-5089INTERCHANGEABLE
COUPLING,PIPE
25020-1-TN
5998-01-345-1547INTERCHANGEABLE
CIRCUIT CARD ASSEMBLY
6515-01-348-8208INTERCHANGEABLE
OTOSCOPE
238-3
6650-01-459-1708INTERCHANGEABLE
FIXTURE,TEST,OPTICAL EQUIPMENT
25020

Frequently Asked Questions

What is NSN 4730-00-569-9649?

NSN 4730-00-569-9649 is a Adapter,straight,pipe to Tube, manufactured by Lenz Inc Dba the Lenz Company, classified under FSC 4730 (No Item Name Available). Status: active.

What are the part numbers for NSN 4730-00-569-9649?

NSN 4730-00-569-9649 has 2 cross-referenced part numbers: 250-20 (Lenz Inc Dba the Lenz Company), 8735784 (U S Army Tank Automotive Command Amsta-Im-Mm).

What NSN replaces 4730-00-569-9649?

There are 12 known substitutes for 4730-00-569-9649: 5360-00-300-7536, 2935-00-622-7640, 6125-00-635-3770 and 9 more. Verify interchangeability with system specifications before substitution.

What are the specifications of 250-20?

Key specifications for 250-20: Connection Type: THREADED EXTERNAL TUBE FIRST END; Nominal Overall Length: 2.250 INCHES IN; Surface Treatment: CADMIUM INSIDE; Connection Style: GASKET SEAL, COMPRESSION (TUBE) FIRST END. 17 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