PartsTable
Technical Data Sheet
6-4HBZB ✓ 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 REDUCER,TUBE is a the manufacturer industrial component. Key specifications include material: COPPER ALLOY OVERALL, seat_angle: 20.0 DEGREES ALL ENDS, reducer_type: CONCENTRIC, thread_class: 3A ALL ENDS A, connection_type: THREADED EXTERNAL TUBE ALL ENDS, connection_style: FLARELESS (TUBE) ALL ENDS. This product is currently in active production with full OEM support.

This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 4730-00-793-2746, 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
6-4HBZB
NSN: 4730-00-793-2746
FSC: 4730
CAGE: 60536 — FORBERG SCIENTIFIC INC (USA)
SPECIFICATIONS
materialCOPPER ALLOY OVERALL
seat_angle20.0 DEGREES ALL ENDS
reducer_typeCONCENTRIC
thread_class3A ALL ENDS A
connection_typeTHREADED EXTERNAL TUBE ALL ENDS
connection_styleFLARELESS (TUBE) ALL ENDS
nominal_thread_size0.438 INCHES SECOND END IN
nominal_overall_length1.700 INCHES IN
thread_quantity_per_inch20 FIRST END
thread_series_designatorUNF SECOND END
furnished_items_and_quantity4 FERRULE SLEEVE AND 2 TUBE COUPLING NUT
nominal_outside_diameter_tube_accommodated0.250 INCHES SECOND END IN
NSN4730-00-793-2746
COMPONENT DIAGRAM
HOSE FITTING — THREAD TYPE IS CRITICAL END A: — STRAIGHT END B: — SPECIFICATIONS Thread: — Material: — Pressure: — PN: 6-4HBZB · 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
NOMINAL OVERALL LENGTH: 1.700 INCHES IN
NOMINAL THREAD SIZE: 0.562 INCHES FIRST END IN
REDUCER TYPE: CONCENTRIC
THREAD SERIES DESIGNATOR: UNF SECOND END
NOMINAL OUTSIDE DIAMETER TUBE ACCOMMODATED: 0.375 INCHES FIRST END IN
MATERIAL: COPPER ALLOY OVERALL
FURNISHED ITEMS AND QUANTITY: 4 FERRULE SLEEVE AND 2 TUBE COUPLING NUT
THREAD QUANTITY PER INCH: 20 FIRST END
TECHNICAL CHARACTERISTICS (FLIS)
NOMINAL OVERALL LENGTH1.700 INCHES IN
NOMINAL THREAD SIZE0.562 INCHES FIRST END IN
REDUCER TYPECONCENTRIC
THREAD SERIES DESIGNATORUNF SECOND END
NOMINAL OUTSIDE DIAMETER TUBE ACCOMMODATED0.375 INCHES FIRST END IN
MATERIALCOPPER ALLOY OVERALL
FURNISHED ITEMS AND QUANTITY4 FERRULE SLEEVE AND 2 TUBE COUPLING NUT
THREAD QUANTITY PER INCH20 FIRST END
THREAD SERIES DESIGNATORUNS FIRST END
THREAD CLASS3A ALL ENDS A
VERIFIED SUBSTITUTES & CROSS-REFERENCES 11
712-002369Interchangeable
interchangeable cross-reference
interchangeable
283-429AInterchangeable
interchangeable cross-reference
interchangeable
50-10725 4533-1.0Interchangeable
interchangeable cross-reference
interchangeable
224AInterchangeable
interchangeable cross-reference
interchangeable
I134BInterchangeable
interchangeable cross-reference
interchangeable
I134CInterchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is 6-4HBZB?
6-4HBZB is a REDUCER,TUBE.
What parts can replace 6-4HBZB?
There are 11 known substitutes for 6-4HBZB: 712-002369, 283-429A, 50-10725 4533-1.0 and 8 more. Substitute compatibility should be verified for your specific system.
What is the NSN for 6-4HBZB?
6-4HBZB is cataloged in the Federal Logistics Information System (FLIS) under NSN 4730-00-793-2746. This indicates validated use in U.S. government and defense supply chains.
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