PartsTable
Technical Data Sheet
6558-473 ✓ 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 BRAZING ALLOY,SILVER is a the manufacturer industrial component. Key specifications include material: COPPER ALLOY OVERALL, thickness: 0.938 INCHES NOMINAL IN, flow_angle: 90.0 DEGREES, neck_height: 0.875 INCHES NOMINAL IN, socket_depth: 0.625 INCHES NOMINAL IN, connection_type: UNTHREADED INTERNAL PIPE ALL ENDS. This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 4730-01-012-9451, 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
6558-473
NSN: 4730-01-012-9451
FSC: 4730
CAGE: 43689 — HUNTINGTON INGALLS INC DIV NEWPORT NEWS SHIPBUILDING (USA)
SPECIFICATIONS
materialCOPPER ALLOY OVERALL
thickness0.938 INCHES NOMINAL IN
flow_angle90.0 DEGREES
neck_height0.875 INCHES NOMINAL IN
socket_depth0.625 INCHES NOMINAL IN
connection_typeUNTHREADED INTERNAL PIPE ALL ENDS
flange_diameter6.625 INCHES NOMINAL IN
socket_diameter3.500 INCHES NOMINAL IN
special_featuresENDS ARE SILVER BRAZED
style_designatorROUND, ONE BOLT HOLE CIRCLE
bolt_hole_diameter0.688 INCHES NOMINAL IN
bolt_hole_quantity8
NSN4730-01-012-9451
COMPONENT DIAGRAM
HOSE FITTING — THREAD TYPE IS CRITICAL END A: — STRAIGHT END B: — SPECIFICATIONS Thread: — Material: — Pressure: — PN: 6558-473 · 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 TYPE: UNTHREADED EXTERNAL PIPE SECOND END
SPECIFICATION/STANDARD DATA: 81349-MIL-F1183J GOVERNMENT SPECIFICATION
NONDEFINITIVE SPEC/STD DATA: 42 SIZE AND A TYPE
REDUCER TYPE: CONCENTRIC
NOMINAL PIPE SIZE ACCOMMODATED: 0.500 INCHES SECOND END IN
CONNECTION STYLE: SOCKET W/ GROVE (PIPE) FIRST END
NOMINAL OVERALL LENGTH: 1.060 INCHES IN
TECHNICAL CHARACTERISTICS (FLIS)
CONNECTION TYPEUNTHREADED EXTERNAL PIPE SECOND END
SPECIFICATION/STANDARD DATA81349-MIL-F1183J GOVERNMENT SPECIFICATION
NONDEFINITIVE SPEC/STD DATA42 SIZE AND A TYPE
REDUCER TYPECONCENTRIC
CONNECTION TYPEUNTHREADED INTERNAL PIPE FIRST END
NOMINAL PIPE SIZE ACCOMMODATED0.500 INCHES SECOND END IN
CONNECTION STYLESOCKET W/ GROVE (PIPE) FIRST END
NOMINAL OVERALL LENGTH1.060 INCHES IN
MEDIA FOR WHICH DESIGNEDSTEAM FIRST RESPONSE
FURNISHED ITEMS AND QUANTITY1 BRAZING RING
VERIFIED SUBSTITUTES & CROSS-REFERENCES 13
517-5563843 ITEM FL15Interchangeable
interchangeable cross-reference
interchangeable
6558-473Interchangeable
interchangeable cross-reference
interchangeable
MIL-F-20042DInterchangeable
interchangeable cross-reference
interchangeable
517-5563843Interchangeable
interchangeable cross-reference
interchangeable
9715627Interchangeable
interchangeable cross-reference
interchangeable
517-5563843 ITEInterchangeable
Same NIIN cross-reference
interchangeable
LIFECYCLE
StatusCANCELLED
Availability
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is 6558-473?
6558-473 is a BRAZING ALLOY,SILVER.
What parts can replace 6558-473?
There are 13 known substitutes for 6558-473: 517-5563843 ITEM FL15, 6558-473, MIL-F-20042D and 10 more. Substitute compatibility should be verified for your specific system.
Is 6558-473 still available?
6558-473 is currently cancelled.
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