PartsTable
Technical Data Sheet
30-21HF4NFB ✓ 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 ADAPTER,STRAIGHT,PIPE TO TUBE is a the manufacturer industrial component. Key specifications include material: STEEL COMP 316 OVERALL, seat_angle: 60.0 DEGREES FIRST END, thread_class: A3B FIRST END, connection_type: THREADED INTERNAL TUBE FIRST END, connection_style: HIGH PRESSURE FLARE (USED W/ MALE THREADED STYLE NO. 78)(TUBE) FIRST END, special_features: ADAPTER IS OCTAGONAL IN SHAPE FOR THE FULL LENGTH.

This product is currently in active production with full OEM support. This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 4730-01-499-3401, 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
30-21HF4NFB
NSN: 4730-01-499-3401
FSC: 4730
CAGE: 07097 — GRACO HIGH PRESSURE EQUIPMENT INC. DBA HIGH PRESSURE EQUIPMENT COMPANY (USA)
SPECIFICATIONS
materialSTEEL COMP 316 OVERALL
seat_angle60.0 DEGREES FIRST END
thread_classA3B FIRST END
connection_typeTHREADED INTERNAL TUBE FIRST END
connection_styleHIGH PRESSURE FLARE (USED W/ MALE THREADED STYLE NO. 78)(TUBE) FIRST END
special_featuresADAPTER IS OCTAGONAL IN SHAPE FOR THE FULL LENGTH
operating_pressure15000.0 POUNDS PER SQUARE INCH (PSI) MAXIMUM SINGLE RESPONSE LBS
nominal_thread_size0.250 INCHES SECOND END IN
nominal_overall_length1.500 INCHES IN
end_item_identificationPMEL CALIBRATION EQUIPMENT
thread_quantity_per_inch18 ALL ENDS
thread_series_designatorUNF FIRST END
NSN4730-01-499-3401
COMPONENT DIAGRAM
HOSE FITTING — THREAD TYPE IS CRITICAL END A: — STRAIGHT END B: — SPECIFICATIONS Thread: — Material: — Pressure: — PN: 30-21HF4NFB · 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 OUTSIDE DIAMETER TUBE ACCOMMODATED: 0.250 INCHES FIRST END IN
NOMINAL WIDTH ACROSS FLATS: 1.000 INCHES ALL ENDS IN
OPERATING PRESSURE: 15000.0 POUNDS PER SQUARE INCH (PSI) MAXIMUM SINGLE RESPONSE LBS
THREAD SERIES DESIGNATOR: NPT SECOND END
NOMINAL OVERALL LENGTH: 1.500 INCHES IN
SEAT ANGLE: 60.0 DEGREES FIRST END
TECHNICAL CHARACTERISTICS (FLIS)
NOMINAL OUTSIDE DIAMETER TUBE ACCOMMODATED0.250 INCHES FIRST END IN
PART NAME ASSIGNED BY CONTROLLING AGENCYFEMALE HIGH PRESSURE TO FEMALE NPT PIPE
SPECIAL FEATURESADAPTER IS OCTAGONAL IN SHAPE FOR THE FULL LENGTH
NOMINAL WIDTH ACROSS FLATS1.000 INCHES ALL ENDS IN
OPERATING PRESSURE15000.0 POUNDS PER SQUARE INCH (PSI) MAXIMUM SINGLE RESPONSE LBS
THREAD SERIES DESIGNATORNPT SECOND END
NOMINAL OVERALL LENGTH1.500 INCHES IN
SEAT ANGLE60.0 DEGREES FIRST END
NOMINAL THREAD SIZE0.5625 INCHES FIRST END IN
THREAD QUANTITY PER INCH18 ALL ENDS
VERIFIED SUBSTITUTES & CROSS-REFERENCES 3
102820Interchangeable
interchangeable cross-reference
interchangeable
115302Interchangeable
interchangeable cross-reference
interchangeable
100665Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is 30-21HF4NFB?
30-21HF4NFB is a ADAPTER,STRAIGHT,PIPE TO TUBE.
What parts can replace 30-21HF4NFB?
There are 3 known substitutes for 30-21HF4NFB: 102820, 115302, 100665. Substitute compatibility should be verified for your specific system.
What is the NSN for 30-21HF4NFB?
30-21HF4NFB is cataloged in the Federal Logistics Information System (FLIS) under NSN 4730-01-499-3401. This indicates validated use in U.S. government and defense supply chains.
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