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Technical Data Sheet
PartsTable / COMPONENT / 4-4721-16
4-4721-16 ✓ Verified by PartsTable
— · HOSE FITTING
WHAT YOU NEED TO KNOW
PTFE tape on tapered threads (NPT/BSPT) JIC/AN flare connections seal metal-to-metal — no tape
NPT != BSPT — look identical, NOT interchangeable
PRODUCT OVERVIEW

The ADAPTER,STRAIGHT,TUBE TO HOSE is a the manufacturer industrial component. Key specifications include material: NICKEL ALLOY A OVERALL, seat_angle: 37.0 DEGREES FIRST END, thread_class: 2B FIRST END, connection_type: THREADED EXTERNAL HOSE GRIPPING SECOND END, connection_style: SWIVEL NUT, FLARE (TUBE) STYLE 3 OPTIONAL END FIRST END, nominal_thread_size: 1.312 INCHES FIRST END IN. This product is currently in active production with full OEM support.

This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 4730-00-070-1260, 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
4-4721-16
NSN: 4730-00-070-1260
FSC: 4730
CAGE: 01276 — DANFOSS POWER SOLUTIONS II, LLC (USA)
SPECIFICATIONS
materialNICKEL ALLOY A OVERALL
seat_angle37.0 DEGREES FIRST END
thread_class2B FIRST END
connection_typeTHREADED EXTERNAL HOSE GRIPPING SECOND END
connection_styleSWIVEL NUT, FLARE (TUBE) STYLE 3 OPTIONAL END FIRST END
nominal_thread_size1.312 INCHES FIRST END IN
nominal_overall_length4.480 INCHES IN
thread_quantity_per_inch12 FIRST END
thread_series_designatorUN FIRST END
furnished_items_and_quantity1 SOCKET
nominal_inside_diameter_hose_accommodated1.000 INCHES SECOND END IN
nominal_outside_diameter_hose_accommodated1.560 INCHES SECOND END IN
NSN4730-00-070-1260
COMPONENT DIAGRAM
HOSE FITTING — THREAD TYPE IS CRITICAL END A: — STRAIGHT END B: — SPECIFICATIONS Thread: — Material: — Pressure: — PN: 4-4721-16 · 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
•
MATERIAL DOCUMENT AND CLASSIFICATION: QQ-N-281,CL A FED SPEC SINGLE MATERIAL RESPONSE OVERALL
•
NOMINAL OUTSIDE DIAMETER TUBE ACCOMMODATED: 1.000 INCHES FIRST END IN
•
DEPARTURE FROM CITED DESIGNATOR: MATERIAL CONTROLLED IAW NAVSEA 0948-LP-045-7010 MATERIAL CONTROL STANDARD FOR LEVEL I ITEMS
•
NOMINAL THREAD SIZE: 1.312 INCHES FIRST END IN
•
NONDEFINITIVE SPEC/STD DATA: A TYPE
•
THREAD CLASS: 2B FIRST END
•
NOMINAL INSIDE DIAMETER HOSE ACCOMMODATED: 1.000 INCHES SECOND END IN
•
NOMINAL OVERALL LENGTH: 4.480 INCHES IN
TECHNICAL CHARACTERISTICS (FLIS)
MATERIAL DOCUMENT AND CLASSIFICATIONQQ-N-281,CL A FED SPEC SINGLE MATERIAL RESPONSE OVERALL
NOMINAL OUTSIDE DIAMETER TUBE ACCOMMODATED1.000 INCHES FIRST END IN
DEPARTURE FROM CITED DESIGNATORMATERIAL CONTROLLED IAW NAVSEA 0948-LP-045-7010 MATERIAL CONTROL STANDARD FOR LEVEL I ITEMS
NOMINAL THREAD SIZE1.312 INCHES FIRST END IN
NONDEFINITIVE SPEC/STD DATAA TYPE
THREAD CLASS2B FIRST END
NOMINAL INSIDE DIAMETER HOSE ACCOMMODATED1.000 INCHES SECOND END IN
NOMINAL OVERALL LENGTH4.480 INCHES IN
MATERIALNICKEL ALLOY OVERALL
FURNISHED ITEMS AND QUANTITY1 SOCKET
VERIFIED SUBSTITUTES & CROSS-REFERENCES 10
AH40750-16-16-MInterchangeable
interchangeable cross-reference
interchangeable
4-4721-16Interchangeable
interchangeable cross-reference
interchangeable
MIL-F-24787Interchangeable
interchangeable cross-reference
interchangeable
394-502-2551647PCF27FTGBInterchangeable
Same NIIN cross-reference
interchangeable
20630-16-16MInterchangeable
Same NIIN cross-reference
interchangeable
20630-16-16NAInterchangeable
Same NIIN cross-reference
interchangeable
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is 4-4721-16?
4-4721-16 is a ADAPTER,STRAIGHT,TUBE TO HOSE.
What parts can replace 4-4721-16?
There are 10 known substitutes for 4-4721-16: AH40750-16-16-M, 4-4721-16, MIL-F-24787 and 7 more. Substitute compatibility should be verified for your specific system.
What is the NSN for 4-4721-16?
4-4721-16 is cataloged in the Federal Logistics Information System (FLIS) under NSN 4730-00-070-1260. This indicates validated use in U.S. government and defense supply chains.
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✓ Validated with multiple authoritative sources, including Government, OEM, and Certified sources.
PartsTable Design LLC · partstable.com
Last verified: July 2026