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PartsTable / COMPONENT / 4-2 HBZ-B
4-2 HBZ-B ✓ 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 4730-00-783-8846, 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
4-2 HBZ-B
NSN: 4730-00-783-8846
FSC: 4730
CAGE: 54938 — PARKER-HANNIFIN CORPORATION DIV INSTRUMENTATION PRODUCTS DIVISION (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_size0.312 INCHES SECOND END IN
nominal_overall_length0.969 INCHES IN
thread_quantity_per_inch20 SECOND END
thread_series_designatorUN SECOND END
nominal_outside_diameter_tube_accommodated0.125 INCHES SECOND END IN
NSN4730-00-783-8846
COMPONENT DIAGRAM
HOSE FITTING — THREAD TYPE IS CRITICAL END A: — STRAIGHT END B: — SPECIFICATIONS Thread: — Material: — Pressure: — PN: 4-2 HBZ-B · 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 SERIES DESIGNATOR: UNF FIRST END
•
NOMINAL OUTSIDE DIAMETER TUBE ACCOMMODATED: 0.250 INCHES FIRST END IN
•
THREAD CLASS: 3A ALL ENDS A
•
NOMINAL THREAD SIZE: 0.438 INCHES FIRST END IN
•
NOMINAL OVERALL LENGTH: 0.969 INCHES IN
•
SEAT ANGLE: 20.0 DEGREES ALL ENDS
•
THREAD QUANTITY PER INCH: 20 SECOND END
•
CONNECTION TYPE: THREADED EXTERNAL TUBE ALL ENDS
TECHNICAL CHARACTERISTICS (FLIS)
THREAD SERIES DESIGNATORUNF FIRST END
NOMINAL OUTSIDE DIAMETER TUBE ACCOMMODATED0.250 INCHES FIRST END IN
THREAD CLASS3A ALL ENDS A
NOMINAL THREAD SIZE0.438 INCHES FIRST END IN
NOMINAL OVERALL LENGTH0.969 INCHES IN
SEAT ANGLE20.0 DEGREES ALL ENDS
THREAD QUANTITY PER INCH20 SECOND END
CONNECTION TYPETHREADED EXTERNAL TUBE ALL ENDS
REDUCER TYPECONCENTRIC
NOMINAL THREAD SIZE0.312 INCHES SECOND END IN
VERIFIED SUBSTITUTES & CROSS-REFERENCES 13
40062Interchangeable
interchangeable cross-reference
interchangeable
2620-5040Interchangeable
interchangeable cross-reference
interchangeable
PC5192801Interchangeable
interchangeable cross-reference
interchangeable
162L615-2Interchangeable
interchangeable cross-reference
interchangeable
M4006-2Interchangeable
interchangeable cross-reference
interchangeable
31060Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is 4-2 HBZ-B?
4-2 HBZ-B is a REDUCER,TUBE.
What parts can replace 4-2 HBZ-B?
There are 13 known substitutes for 4-2 HBZ-B: 40062, 2620-5040, PC5192801 and 10 more. Substitute compatibility should be verified for your specific system.
What is the NSN for 4-2 HBZ-B?
4-2 HBZ-B is cataloged in the Federal Logistics Information System (FLIS) under NSN 4730-00-783-8846. This indicates validated use in U.S. government and defense supply chains.
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✓ Validated with multiple authoritative sources, including Government, OEM, and Certified sources.
PartsTable Design LLC · partstable.com
Last verified: July 2026