PartsTable
Technical Data Sheet
503-4556027 ITEM 63 ✓ 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 TEE,TUBE is a the manufacturer industrial component. Key specifications include material: COPPER ALLOY OVERALL, connection_type: UNTHREADED INTERNAL TUBE SECOND END, nominal_outside_diameter_tube_accommodated: 0.500 INCHES SECOND END IN, tubing_wall_nominal_thickness_for_which_designed: 0.035 INCHES SECOND 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 4730-01-178-8462, 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
503-4556027 ITEM 63
NSN: 4730-01-178-8462
FSC: 4730
CAGE: 43689 — HUNTINGTON INGALLS INC DIV NEWPORT NEWS SHIPBUILDING (USA)
SPECIFICATIONS
materialCOPPER ALLOY OVERALL
connection_typeUNTHREADED INTERNAL TUBE SECOND END
nominal_outside_diameter_tube_accommodated0.500 INCHES SECOND END IN
tubing_wall_nominal_thickness_for_which_designed0.035 INCHES SECOND END IN
NSN4730-01-178-8462
COMPONENT DIAGRAM
HOSE FITTING — THREAD TYPE IS CRITICAL END A: — STRAIGHT END B: — SPECIFICATIONS Thread: — Material: — Pressure: — PN: 503-4556027 ITEM 63 · 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
TUBING WALL NOMINAL THICKNESS FOR WHICH DESIGNED: 0.035 INCHES SECOND END IN
CONNECTION TYPE: UNTHREADED INTERNAL TUBE SECOND END
NOMINAL OUTSIDE DIAMETER TUBE ACCOMMODATED: 0.500 INCHES SECOND END IN
MATERIAL: COPPER ALLOY OVERALL
TECHNICAL CHARACTERISTICS (FLIS)
TUBING WALL NOMINAL THICKNESS FOR WHICH DESIGNED0.035 INCHES SECOND END IN
TUBING WALL NOMINAL THICKNESS FOR WHICH DESIGNED0.035 INCHES FIRST END IN
CONNECTION TYPEUNTHREADED INTERNAL TUBE SECOND END
NOMINAL OUTSIDE DIAMETER TUBE ACCOMMODATED0.500 INCHES SECOND END IN
MATERIALCOPPER ALLOY OVERALL
NOMINAL OUTSIDE DIAMETER TUBE ACCOMMODATED0.750 INCHES FIRST END IN
CONNECTION TYPEUNTHREADED INTERNAL TUBE FIRST END
VERIFIED SUBSTITUTES & CROSS-REFERENCES 21
267057Interchangeable
interchangeable cross-reference
interchangeable
DD19CA061Interchangeable
interchangeable cross-reference
interchangeable
NFT5-4Interchangeable
interchangeable cross-reference
interchangeable
A16447Interchangeable
interchangeable cross-reference
interchangeable
202208-4-4BInterchangeable
interchangeable cross-reference
interchangeable
503-4556027ITEM3Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is 503-4556027 ITEM 63?
503-4556027 ITEM 63 is a TEE,TUBE.
What parts can replace 503-4556027 ITEM 63?
There are 21 known substitutes for 503-4556027 ITEM 63: 267057, DD19CA061, NFT5-4 and 18 more. Substitute compatibility should be verified for your specific system.
What is the NSN for 503-4556027 ITEM 63?
503-4556027 ITEM 63 is cataloged in the Federal Logistics Information System (FLIS) under NSN 4730-01-178-8462. This indicates validated use in U.S. government and defense supply chains.
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