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Technical Data Sheet
PartsTable / COMPONENT / 6H31-BS-143
6H31-BS-143 ✓ 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, leg_length: 0.750 INCHES NOMINAL IN, connection_type: INTERNAL QUICK DISCONNECT FIRST QUICK DISCONNECT END, furnished_items: PREFORMED PACKING AND SPRING, connection_style: GASKET SEAL 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 4730-01-164-9019, 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
6H31-BS-143
NSN: 4730-01-164-9019
FSC: 4730
CAGE: U7432 — POLAR PUMPS LTD (GBR)
SPECIFICATIONS
materialSTEEL BODY
leg_length0.750 INCHES NOMINAL IN
connection_typeINTERNAL QUICK DISCONNECT FIRST QUICK DISCONNECT END
furnished_itemsPREFORMED PACKING AND SPRING
connection_styleGASKET SEAL ALL ENDS
style_designatorMALE COUPLING HALF
features_providedSELF-SEALING
nominal_thread_size0.750 INCHES ALL ENDS IN
quick_disconnect_methodSPRING PUSH-PULL SECOND QUICK DISCONNECT END
thread_series_designatorNPT ALL ENDS
mating_end_identificationHANSEN MFG CO. COUPLING HALF,QUICK DISCONNECT,PART NO. 6-K31
quick_disconnect_nominal_size0.750 INCHES SECOND QUICK DISCONNECT END IN
NSN4730-01-164-9019
COMPONENT DIAGRAM
HOSE FITTING — THREAD TYPE IS CRITICAL END A: — STRAIGHT END B: — SPECIFICATIONS Thread: — Material: — Pressure: — PN: 6H31-BS-143 · 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: NPT ALL ENDS
•
LEG LENGTH: 0.750 INCHES NOMINAL IN
•
STYLE DESIGNATOR: MALE COUPLING HALF
•
NOMINAL THREAD SIZE: 0.750 INCHES ALL ENDS IN
•
MATERIAL: STEEL BODY
•
CONNECTION TYPE: THREADED INTERNAL PIPE FIRST FLUID END CONNECTION
•
MATING END IDENTIFICATION: HANSEN MFG CO. COUPLING HALF,QUICK DISCONNECT,PART NO. 6-K31
•
FEATURES PROVIDED: SELF-SEALING
TECHNICAL CHARACTERISTICS (FLIS)
THREAD SERIES DESIGNATORNPT ALL ENDS
LEG LENGTH0.750 INCHES NOMINAL IN
STYLE DESIGNATORMALE COUPLING HALF
NOMINAL THREAD SIZE0.750 INCHES ALL ENDS IN
MATERIALSTEEL BODY
CONNECTION TYPETHREADED INTERNAL PIPE FIRST FLUID END CONNECTION
MATING END IDENTIFICATIONHANSEN MFG CO. COUPLING HALF,QUICK DISCONNECT,PART NO. 6-K31
FEATURES PROVIDEDSELF-SEALING
QUICK DISCONNECT NOMINAL SIZE0.750 INCHES SECOND QUICK DISCONNECT END IN
QUICK DISCONNECT METHODSPRING PUSH-PULL SECOND QUICK DISCONNECT END
VERIFIED SUBSTITUTES & CROSS-REFERENCES 7
13211E3213Interchangeable
interchangeable cross-reference
interchangeable
6H31CSCDInterchangeable
interchangeable cross-reference
interchangeable
6HP31Interchangeable
interchangeable cross-reference
interchangeable
39612Interchangeable
interchangeable cross-reference
interchangeable
6H-31Interchangeable
interchangeable cross-reference
interchangeable
33817117Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is 6H31-BS-143?
6H31-BS-143 is a COUPLING HALF,QUICK DISCONNECT.
What parts can replace 6H31-BS-143?
There are 7 known substitutes for 6H31-BS-143: 13211E3213, 6H31CSCD, 6HP31 and 4 more. Substitute compatibility should be verified for your specific system.
What is the NSN for 6H31-BS-143?
6H31-BS-143 is cataloged in the Federal Logistics Information System (FLIS) under NSN 4730-01-164-9019. 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