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Technical Data Sheet
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3PB1 ✓ 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: COPPER ALLOY OR STEEL BODY, leg_length: 1.031 INCHES MINIMUM AND 1.125 INCHES MAXIMUM IN, overall_length: 2.312 INCHES NOMINAL IN, connection_type: EXTERNAL QUICK DISCONNECT ALL ENDS, furnished_items: HOSE COUPLING NUT, connection_style: HOSE GRIPPING NIPPLE 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 4730-00-293-7173, 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
3PB1
NSN: 4730-00-293-7173
FSC: 4730
CAGE: 73992 — TUTHILL CORP HANSEN COUPLING DIV (USA)
SPECIFICATIONS
materialCOPPER ALLOY OR STEEL BODY
leg_length1.031 INCHES MINIMUM AND 1.125 INCHES MAXIMUM IN
overall_length2.312 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
quick_disconnect_nominal_size0.312 INCHES ALL ENDS IN
nominal_inside_diameter_hose_accommodated0.250 INCHES ALL ENDS IN
first_end_outside_diameter_hose_accommodated0.438 INCHES MINIMUM AND 0.469 INCHES MAXIMUM IN
NSN4730-00-293-7173
COMPONENT DIAGRAM
HOSE FITTING — THREAD TYPE IS CRITICAL END A: — STRAIGHT END B: — SPECIFICATIONS Thread: — Material: — Pressure: — PN: 3PB1 · 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
•
FIRST END OUTSIDE DIAMETER HOSE ACCOMMODATED: 0.438 INCHES MINIMUM AND 0.469 INCHES MAXIMUM IN
•
MATERIAL: COPPER ALLOY OR STEEL BODY
•
QUICK DISCONNECT NOMINAL SIZE: 0.312 INCHES ALL ENDS IN
•
QUICK DISCONNECT METHOD: PUSH-PULL ALL ENDS
•
STYLE DESIGNATOR: MALE COUPLING HALF
•
CONNECTION TYPE: EXTERNAL QUICK DISCONNECT ALL ENDS
•
LEG LENGTH: 1.031 INCHES MINIMUM AND 1.125 INCHES MAXIMUM IN
TECHNICAL CHARACTERISTICS (FLIS)
FIRST END OUTSIDE DIAMETER HOSE ACCOMMODATED0.438 INCHES MINIMUM AND 0.469 INCHES MAXIMUM IN
MATERIALCOPPER ALLOY OR STEEL BODY
QUICK DISCONNECT NOMINAL SIZE0.312 INCHES ALL ENDS IN
QUICK DISCONNECT METHODPUSH-PULL ALL ENDS
STYLE DESIGNATORMALE COUPLING HALF
CONNECTION TYPEEXTERNAL QUICK DISCONNECT ALL ENDS
LEG LENGTH1.031 INCHES MINIMUM AND 1.125 INCHES MAXIMUM IN
CONNECTION TYPETHREADED EXTERNAL HOSE GRIPPING FIRST FLUID END CONNECTION
CONNECTION STYLEHOSE GRIPPING NIPPLE ALL ENDS
NOMINAL INSIDE DIAMETER HOSE ACCOMMODATED0.250 INCHES ALL ENDS IN
VERIFIED SUBSTITUTES & CROSS-REFERENCES 11
39-23Interchangeable
interchangeable cross-reference
interchangeable
W-L-142Interchangeable
interchangeable cross-reference
interchangeable
9875XInterchangeable
interchangeable cross-reference
interchangeable
GE3327Interchangeable
interchangeable cross-reference
interchangeable
7670K6Interchangeable
interchangeable cross-reference
interchangeable
MS25068-31Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is 3PB1?
3PB1 is a COUPLING HALF,QUICK DISCONNECT.
What parts can replace 3PB1?
There are 11 known substitutes for 3PB1: 39-23, W-L-142, 9875X and 8 more. Substitute compatibility should be verified for your specific system.
What is the NSN for 3PB1?
3PB1 is cataloged in the Federal Logistics Information System (FLIS) under NSN 4730-00-293-7173. 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