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H665B ✓ 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 ELBOW,ELECTRICAL CONDUIT is a the manufacturer industrial component. Key specifications include material: COPPER ALLOY, thread_size: 1.750-14, thread_class: 2B, thread_length: 1.094 INCHES NOMINAL IN, overall_length: 1.375 INCHES NOMINAL IN, style_designator: HEXAGON, INTERNAL THREAD, SHOULDERED. This product is currently in active production with full OEM support.

This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 4730-00-986-1982, 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
H665B
NSN: 4730-00-986-1982
FSC: 4730
CAGE: 81718 — OPW FUELING COMPONENTS INC. DIV OPW FUELING COMPONENTS (USA)
SPECIFICATIONS
materialCOPPER ALLOY
thread_size1.750-14
thread_class2B
thread_length1.094 INCHES NOMINAL IN
overall_length1.375 INCHES NOMINAL IN
style_designatorHEXAGON, INTERNAL THREAD, SHOULDERED
thread_directionRIGHT-HAND
length_to_shoulder1.125 INCHES NOMINAL IN
width_across_flats1.938 INCHES NOMINAL IN
screw_thread_locationINTERNAL
casehardening_indicatorNOT CASEHARDENED
smallest_inside_diameter0.921 INCHES NOMINAL IN
NSN4730-00-986-1982
COMPONENT DIAGRAM
HOSE FITTING — THREAD TYPE IS CRITICAL END A: — STRAIGHT END B: — SPECIFICATIONS Thread: — Material: — Pressure: — PN: H665B · 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
•
SCREW THREAD SERIES DESIGNATOR: UNS
•
SMALLEST INSIDE DIAMETER: 0.921 INCHES NOMINAL IN
•
SCREW THREAD LOCATION: INTERNAL
•
LENGTH TO SHOULDER: 1.125 INCHES NOMINAL IN
•
WIDTH ACROSS FLATS: 1.938 INCHES NOMINAL IN
•
MATERIAL: COPPER ALLOY
•
STYLE DESIGNATOR: HEXAGON, INTERNAL THREAD, SHOULDERED
•
MATERIAL DOCUMENT AND CLASSIFICATION: ASTM B124,ALLOY 2 ASSN STD SINGLE MATERIAL RESPONSE
TECHNICAL CHARACTERISTICS (FLIS)
SCREW THREAD SERIES DESIGNATORUNS
SMALLEST INSIDE DIAMETER0.921 INCHES NOMINAL IN
SCREW THREAD LOCATIONINTERNAL
LENGTH TO SHOULDER1.125 INCHES NOMINAL IN
WIDTH ACROSS FLATS1.938 INCHES NOMINAL IN
MATERIALCOPPER ALLOY
STYLE DESIGNATORHEXAGON, INTERNAL THREAD, SHOULDERED
MATERIAL DOCUMENT AND CLASSIFICATIONASTM B124,ALLOY 2 ASSN STD SINGLE MATERIAL RESPONSE
THREAD SIZE1.750-14
OVERALL LENGTH1.375 INCHES NOMINAL IN
VERIFIED SUBSTITUTES & CROSS-REFERENCES 11
A-A-2443Interchangeable
interchangeable cross-reference
interchangeable
GGG-F-331Interchangeable
interchangeable cross-reference
interchangeable
GGG-F-331 TY18CL2Interchangeable
interchangeable cross-reference
interchangeable
4035-1187Interchangeable
interchangeable cross-reference
interchangeable
20676Interchangeable
interchangeable cross-reference
interchangeable
50-10167Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is H665B?
H665B is a ELBOW,ELECTRICAL CONDUIT.
What parts can replace H665B?
There are 11 known substitutes for H665B: A-A-2443, GGG-F-331, GGG-F-331 TY18CL2 and 8 more. Substitute compatibility should be verified for your specific system.
What is the NSN for H665B?
H665B is cataloged in the Federal Logistics Information System (FLIS) under NSN 4730-00-986-1982. 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