PartsTable
Technical Data Sheet
5520K56 ✓ 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 ELBOW,TUBE is a the manufacturer industrial component. Key specifications include material: COPPER ALLOY OVERALL, flow_angle: 45.0 DEGREES, leg_length: 1.562 INCHES NOMINAL FIRST END IN, connection_type: UNTHREADED INTERNAL TUBE FIRST END, connection_style: SOCKET (TUBE) FIRST END, departure_from_cited_document: AS MODIFIED BY TUBING WALL THICKNESS FOR WHICH DESIGNED FROM FED STD 146. This product is currently in active production with full OEM support.

This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 4730-00-878-3204, 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
5520K56
NSN: 4730-00-878-3204
FSC: 4730
CAGE: 39428 — MCMASTER-CARR SUPPLY CO (USA)
SPECIFICATIONS
materialCOPPER ALLOY OVERALL
flow_angle45.0 DEGREES
leg_length1.562 INCHES NOMINAL FIRST END IN
connection_typeUNTHREADED INTERNAL TUBE FIRST END
connection_styleSOCKET (TUBE) FIRST END
departure_from_cited_documentAS MODIFIED BY TUBING WALL THICKNESS FOR WHICH DESIGNED FROM FED STD 146
nominal_outside_diameter_tube_accommodated2.125 INCHES FIRST END IN
tubing_wall_nominal_thickness_for_which_designed0.070 INCHES FIRST END IN
NSN4730-00-878-3204
COMPONENT DIAGRAM
HOSE FITTING — THREAD TYPE IS CRITICAL END A: — STRAIGHT END B: — SPECIFICATIONS Thread: — Material: — Pressure: — PN: 5520K56 · 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
CONNECTION STYLE: SOCKET (TUBE) FIRST END
FLOW ANGLE: 45.0 DEGREES
NOMINAL OUTSIDE DIAMETER TUBE ACCOMMODATED: 2.125 INCHES FIRST END IN
CONNECTION TYPE: UNTHREADED INTERNAL TUBE FIRST END
MATERIAL: COPPER ALLOY OVERALL
TUBING WALL NOMINAL THICKNESS FOR WHICH DESIGNED: 0.070 INCHES FIRST END IN
LEG LENGTH: 1.562 INCHES NOMINAL FIRST END IN
DEPARTURE FROM CITED DOCUMENT: AS MODIFIED BY TUBING WALL THICKNESS FOR WHICH DESIGNED FROM FED STD 146
TECHNICAL CHARACTERISTICS (FLIS)
CONNECTION STYLESOCKET (TUBE) FIRST END
FLOW ANGLE45.0 DEGREES
NOMINAL OUTSIDE DIAMETER TUBE ACCOMMODATED2.125 INCHES FIRST END IN
CONNECTION TYPEUNTHREADED INTERNAL TUBE FIRST END
MATERIALCOPPER ALLOY OVERALL
TUBING WALL NOMINAL THICKNESS FOR WHICH DESIGNED0.070 INCHES FIRST END IN
LEG LENGTH1.562 INCHES NOMINAL FIRST END IN
DEPARTURE FROM CITED DOCUMENTAS MODIFIED BY TUBING WALL THICKNESS FOR WHICH DESIGNED FROM FED STD 146
VERIFIED SUBSTITUTES & CROSS-REFERENCES 17
SEEPIDInterchangeable
interchangeable cross-reference
interchangeable
B16.23Interchangeable
interchangeable cross-reference
interchangeable
SEE ITEM DESCRIPTIONInterchangeable
interchangeable cross-reference
interchangeable
8-633Interchangeable
interchangeable cross-reference
interchangeable
4730002703891Interchangeable
interchangeable cross-reference
interchangeable
WW-P-541Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is 5520K56?
5520K56 is a ELBOW,TUBE.
What parts can replace 5520K56?
There are 17 known substitutes for 5520K56: SEEPID, B16.23, SEE ITEM DESCRIPTION and 14 more. Substitute compatibility should be verified for your specific system.
What is the NSN for 5520K56?
5520K56 is cataloged in the Federal Logistics Information System (FLIS) under NSN 4730-00-878-3204. This indicates validated use in U.S. government and defense supply chains.
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