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4-PB3 ✓ 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 COUPLING HALF,QUICK DISCONNECT is a the manufacturer industrial component. Key specifications include material: STEEL BODY, overall_length: 2.438 INCHES NOMINAL IN, connection_type: EXTERNAL QUICK DISCONNECT ALL ENDS, furnished_items: HOSE COUPLING NUT, connection_style: HOSE GRIPPING NIPPLE ALL ENDS, style_designator: MALE COUPLING HALF. This product is currently in active production with full OEM support.

This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 4730-01-071-4076, 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-PB3
NSN: 4730-01-071-4076
FSC: 4730
CAGE: 73992 — TUTHILL CORP HANSEN COUPLING DIV (USA)
SPECIFICATIONS
materialSTEEL BODY
overall_length2.438 INCHES NOMINAL IN
connection_typeEXTERNAL QUICK DISCONNECT ALL ENDS
furnished_itemsHOSE COUPLING NUT
connection_styleHOSE GRIPPING NIPPLE ALL ENDS
style_designatorMALE COUPLING HALF
quick_disconnect_methodPUSH-PULL ALL ENDS
nominal_inside_diameter_hose_accommodated0.250 INCHES ALL ENDS IN
first_end_outside_diameter_hose_accommodated0.500 INCHES NOMINAL IN
NSN4730-01-071-4076
COMPONENT DIAGRAM
HOSE FITTING — THREAD TYPE IS CRITICAL END A: — STRAIGHT END B: — SPECIFICATIONS Thread: — Material: — Pressure: — PN: 4-PB3 · 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
•
MATERIAL: STEEL BODY
•
STYLE DESIGNATOR: MALE COUPLING HALF
•
CONNECTION TYPE: EXTERNAL QUICK DISCONNECT ALL ENDS
•
QUICK DISCONNECT METHOD: PUSH-PULL ALL ENDS
•
CONNECTION STYLE: HOSE GRIPPING NIPPLE ALL ENDS
•
NOMINAL INSIDE DIAMETER HOSE ACCOMMODATED: 0.250 INCHES ALL ENDS IN
TECHNICAL CHARACTERISTICS (FLIS)
MATERIALSTEEL BODY
STYLE DESIGNATORMALE COUPLING HALF
CONNECTION TYPEEXTERNAL QUICK DISCONNECT ALL ENDS
QUICK DISCONNECT METHODPUSH-PULL ALL ENDS
CONNECTION STYLEHOSE GRIPPING NIPPLE ALL ENDS
NOMINAL INSIDE DIAMETER HOSE ACCOMMODATED0.250 INCHES ALL ENDS IN
CONNECTION TYPETHREADED EXTERNAL HOSE GRIPPING FIRST FLUID END CONNECTION
OVERALL LENGTH2.438 INCHES NOMINAL IN
FURNISHED ITEMSHOSE COUPLING NUT
FIRST END OUTSIDE DIAMETER HOSE ACCOMMODATED0.500 INCHES NOMINAL IN
VERIFIED SUBSTITUTES & CROSS-REFERENCES 6
716625-01Interchangeable
interchangeable cross-reference
interchangeable
P-212HInterchangeable
interchangeable cross-reference
interchangeable
PB201X3-4Interchangeable
interchangeable cross-reference
interchangeable
PB3/4Interchangeable
interchangeable cross-reference
interchangeable
64502Interchangeable
interchangeable cross-reference
interchangeable
PB3-4Interchangeable
Same NIIN cross-reference
interchangeable
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is 4-PB3?
4-PB3 is a COUPLING HALF,QUICK DISCONNECT.
What parts can replace 4-PB3?
There are 6 known substitutes for 4-PB3: 716625-01, P-212H, PB201X3-4 and 3 more. Substitute compatibility should be verified for your specific system.
What is the NSN for 4-PB3?
4-PB3 is cataloged in the Federal Logistics Information System (FLIS) under NSN 4730-01-071-4076. 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