PartsTable
Technical Data Sheet
4-411-20L1 ✓ 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 INTERNAL TUBE FIRST END, connection_style: SWIVEL NUT, FLARE (TUBE) STYLE 3 OPTIONAL END FIRST END, nominal_thread_size: 1.625 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 4730-00-834-1857, 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
4-411-20L1
NSN: 4730-00-834-1857
FSC: 4730
CAGE: 03950 — NAVAL INVENTORY CONTROL POINT MECHANICSBURG (USA)
SPECIFICATIONS
materialNICKEL ALLOY A OVERALL
seat_angle37.0 DEGREES FIRST END
thread_class2B FIRST END
connection_typeTHREADED INTERNAL TUBE FIRST END
connection_styleSWIVEL NUT, FLARE (TUBE) STYLE 3 OPTIONAL END FIRST END
nominal_thread_size1.625 INCHES FIRST END IN
nominal_overall_length3.000 INCHES IN
thread_quantity_per_inch12 FIRST END
thread_series_designatorUN FIRST END
furnished_items_and_quantity1 SOCKET
criticality_code_justificationZZZY
material_document_and_classificationQQ-N-281,CL A FED SPEC SINGLE MATERIAL RESPONSE OVERALL
NSN4730-00-834-1857
COMPONENT DIAGRAM
HOSE FITTING — THREAD TYPE IS CRITICAL END A: — STRAIGHT END B: — SPECIFICATIONS Thread: — Material: — Pressure: — PN: 4-411-20L1 · 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
THREAD QUANTITY PER INCH: 12 FIRST END
MATERIAL DOCUMENT AND CLASSIFICATION: QQ-N-281,CL A FED SPEC SINGLE MATERIAL RESPONSE OVERALL
THREAD CLASS: 2B FIRST END
MATERIAL: NICKEL ALLOY A OVERALL
NOMINAL THREAD SIZE: 1.625 INCHES FIRST END IN
CONNECTION STYLE: SWIVEL NUT, FLARE (TUBE) STYLE 3 OPTIONAL END FIRST END
SEAT ANGLE: 37.0 DEGREES FIRST END
TECHNICAL CHARACTERISTICS (FLIS)
THREAD QUANTITY PER INCH12 FIRST END
MATERIAL DOCUMENT AND CLASSIFICATIONQQ-N-281,CL A FED SPEC SINGLE MATERIAL RESPONSE OVERALL
THREAD CLASS2B FIRST END
MATERIALNICKEL ALLOY A OVERALL
NOMINAL THREAD SIZE1.625 INCHES FIRST END IN
CONNECTION STYLESWIVEL NUT, FLARE (TUBE) STYLE 3 OPTIONAL END FIRST END
SEAT ANGLE37.0 DEGREES FIRST END
CONNECTION STYLEGRIPPING NIPPLE (NOSE) SECOND END
REFERENCE NUMBER DIFFERENTIATING CHARACTERISTICSQUALITY CONTROL IAW NAVSHIPS 0948-045-7010 MATERIAL IDENTIFICATION AND CONTROL INSTRUCTION FOR LEVEL 1 ITEMS
FURNISHED ITEMS AND QUANTITY1 SOCKET
VERIFIED SUBSTITUTES & CROSS-REFERENCES 7
CMC 4 5511 20 20Interchangeable
interchangeable cross-reference
interchangeable
MIL-F-24787Interchangeable
interchangeable cross-reference
interchangeable
20622-20-20MInterchangeable
interchangeable cross-reference
interchangeable
63357-20-20Interchangeable
Same NIIN cross-reference
interchangeable
MIL-F-24787/2 TYPE AGROUPVIIIL1Interchangeable
Same NIIN cross-reference
interchangeable
4-411-20Interchangeable
Same NIIN cross-reference
interchangeable
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is 4-411-20L1?
4-411-20L1 is a ADAPTER,STRAIGHT,TUBE TO HOSE.
What parts can replace 4-411-20L1?
There are 7 known substitutes for 4-411-20L1: CMC 4 5511 20 20, MIL-F-24787, 20622-20-20M and 4 more. Substitute compatibility should be verified for your specific system.
What is the NSN for 4-411-20L1?
4-411-20L1 is cataloged in the Federal Logistics Information System (FLIS) under NSN 4730-00-834-1857. This indicates validated use in U.S. government and defense supply chains.
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