PartsTable
Technical Data Sheet
Download PDF

4721-20 — ADAPTER,STRAIGHT,TUBE TO HOSE

✓ Government record, cited
— · HOSE FITTING
PRODUCT OVERVIEW

4721-20: ADAPTER,STRAIGHT,TUBE TO HOSE.

The ADAPTER,STRAIGHT,TUBE TO HOSE is a the manufacturer industrial component. Key specifications include material: STEEL OVERALL, seat_angle: 37.0 DEGREES FIRST END, thread_class: 3B FIRST END3B FIRST END, connection_type: THREADED EXTERNAL HOSE GRIPPING SECOND ENDTHREADED EXTERNAL HOSE GRIPPING SECOND END, connection_style: SWIVEL NUT, FLARE (TUBE) STYLE 3 OPTIONAL END FIRST ENDSWIVEL NUT, FLARE (TUBE) STYLE 3 OPTIONAL END FIRST END, operating_pressure: 2250.0 POUNDS PER SQUARE INCH (PSI) MAXIMUM SINGLE RESPONSE LBS. This part is cataloged in the U.S.

Government catalog under NSN 4730-00-374-6955, indicating validated use in U.S. government and defense logistics supply chains. Available through authorized enterprise resellers and TPM (Third Party Maintenance) channels.

Verify compatibility with your specific system configuration before ordering.

WHERE IT FITS
4721-20
NSN: 4730-00-374-6955
NIINs: 003746955, 014181546
FSC: 4730 — Hose, Pipe, Tube, Lubrication, and Railing Fittings
CAGE: 00624 — EATON AEROQUIP LLC DBA JACKSON NORTH 1 DIV FLUID AND ELECTRICAL DISTRIBUTION (USA)
SPECIFICATIONS
materialSTEEL OVERALL
seat_angle37.0 DEGREES FIRST END
thread_class3B FIRST END3B FIRST END
connection_typeTHREADED EXTERNAL HOSE GRIPPING SECOND ENDTHREADED EXTERNAL HOSE GRIPPING SECOND END
connection_styleSWIVEL NUT, FLARE (TUBE) STYLE 3 OPTIONAL END FIRST ENDSWIVEL NUT, FLARE (TUBE) STYLE 3 OPTIONAL END FIRST END
operating_pressure2250.0 POUNDS PER SQUARE INCH (PSI) MAXIMUM SINGLE RESPONSE LBS
nominal_thread_size1.625 INCHES FIRST END1.625 INCHES FIRST END IN
maximum_operating_temp200.0 FAHRENHEIT SINGLE RESPONSE200.0 FAHRENHEIT SINGLE RESPONSE DEGF
nominal_overall_length5.100 INCHES IN
thread_quantity_per_inch12 FIRST END12 FIRST END
thread_series_designatorUN FIRST END
furnished_items_and_quantity1 HOSE COUPLING NUT
NSN4730-00-374-6955
COMPONENT DIAGRAM
HOSE FITTING — THREAD TYPE IS CRITICAL END A: — STRAIGHT END B: — SPECIFICATIONS Thread: — Material: — Pressure: — PN: 4721-20 · OEM ⚠ VERIFY BEFORE ORDERING NPT ≠ BSPT — tapered threads look identical but are NOT interchangeable. Wrong thread = leak. JIC (37°) ≠ AN (37°) ≠ SAE 45° — flare angles must match exactly. Measure thread pitch with gauge — visual identification is unreliable ✓ BROKER TIP Always use thread sealant (PTFE tape or pipe compound) on tapered threads (NPT/BSPT). JIC/AN flare fittings seal metal-to-metal — never use tape on flare connections PARTSTABLE TECHNICAL DRAWING — NOT TO SCALE
KEY FEATURES
•
FURNISHED ITEMS AND QUANTITY: 1 HOSE COUPLING NUT
•
CONNECTION STYLE: SWIVEL NUT, FLARE (TUBE) STYLE 3 OPTIONAL END FIRST ENDSWIVEL NUT, FLARE (TUBE) STYLE 3 OPTIONAL END FIRST END
•
NOMINAL INSIDE DIAMETER HOSE ACCOMMODATED: 1.250 INCHES SECOND END IN
•
NOMINAL OUTSIDE DIAMETER HOSE ACCOMMODATED: 2.000 INCHES SECOND END IN
•
NOMINAL OVERALL LENGTH: 5.100 INCHES IN
•
CONNECTION TYPE: THREADED INTERNAL TUBE FIRST ENDTHREADED INTERNAL TUBE FIRST END
TECHNICAL CHARACTERISTICS
FURNISHED ITEMS AND QUANTITY1 HOSE COUPLING NUT
CONNECTION STYLESWIVEL NUT, FLARE (TUBE) STYLE 3 OPTIONAL END FIRST ENDSWIVEL NUT, FLARE (TUBE) STYLE 3 OPTIONAL END FIRST END
CONNECTION STYLEGRIPPING NIPPLE (NOSE) SECOND ENDGRIPPING NIPPLE (NOSE) SECOND END
NOMINAL INSIDE DIAMETER HOSE ACCOMMODATED1.250 INCHES SECOND END IN
NOMINAL OUTSIDE DIAMETER HOSE ACCOMMODATED2.000 INCHES SECOND END IN
NOMINAL OVERALL LENGTH5.100 INCHES IN
CONNECTION TYPETHREADED INTERNAL TUBE FIRST ENDTHREADED INTERNAL TUBE FIRST END
CONNECTION TYPETHREADED EXTERNAL HOSE GRIPPING SECOND ENDTHREADED EXTERNAL HOSE GRIPPING SECOND END
NOMINAL OUTSIDE DIAMETER TUBE ACCOMMODATED1.250 INCHES FIRST END IN
OPERATING PRESSURE2250.0 POUNDS PER SQUARE INCH (PSI) MAXIMUM SINGLE RESPONSE LBS
SUBSTITUTES & CROSS-REFERENCES 1
9125146Reference document
Same NSN cross-reference
Reference document — Secondary reference
LIFECYCLE
NSN statusActive· U.S. Government catalog
No demilitarization required
Ready to buy 4721-20?
Compare prices from verified sellers on eBay
Buy on eBay →
As an eBay Partner, PartsTable may earn a commission. Your price is not affected.
FREQUENTLY ASKED QUESTIONS
What is 4721-20?
4721-20 is a ADAPTER,STRAIGHT,TUBE TO HOSE.
What parts can replace 4721-20?
There is 1 known substitute for 4721-20: 9125146. Substitute compatibility should be verified for your specific system.
What is the NSN for 4721-20?
4721-20 is cataloged in the U.S. Government catalog under NSN 4730-00-374-6955. This indicates validated use in U.S. government and defense supply chains.
Community Feedback
Leave a Comment
Comments are reviewed before appearing. You will receive an email to verify before your comment appears.

Request a Quote — 4721-20