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Technical Data Sheet
PartsTable / COMPONENT / 8BTXB
8BTXB ✓ 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 NUT,TUBE COUPLING is a the manufacturer industrial component. Key specifications include criticality_code_justification: ZZZY, reference_number_differentiating_characteristics: CLEANING, PACKAGING, AND MARKING IAW MIL-STD-1330D. This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 4730-00-684-7252, 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
8BTXB
NSN: 4730-00-684-7252
FSC: 4730
CAGE: 30780 — PARKER-HANNIFIN CORPORATION DBA PNEUTRONICS DIV TUBE FITTINGS DIVISION (USA)
SPECIFICATIONS
criticality_code_justificationZZZY
reference_number_differentiating_characteristicsCLEANING, PACKAGING, AND MARKING IAW MIL-STD-1330D
NSN4730-00-684-7252
COMPONENT DIAGRAM
HOSE FITTING — THREAD TYPE IS CRITICAL END A: — STRAIGHT END B: — SPECIFICATIONS Thread: — Material: — Pressure: — PN: 8BTXB · 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
•
NUT STYLE: TUBE COUPLING
•
NUT HEIGHT: 0.840 INCHES NOMINAL IN
•
THREAD QUANTITY PER INCH: 16
•
MATERIAL: COPPER ALLOY 360 OVERALL
•
NOMINAL TUBE OUTSIDE DIAMETER: 0.500 INCHES IN
•
THREAD CLASS: 2B
•
LENGTH TO SHOULDER: 0.723 INCHES NOMINAL IN
•
NOMINAL THREAD SIZE: 0.750 INCHES IN
TECHNICAL CHARACTERISTICS (FLIS)
NUT STYLETUBE COUPLING
NUT HEIGHT0.840 INCHES NOMINAL IN
THREAD QUANTITY PER INCH16
MATERIALCOPPER ALLOY 360 OVERALL
NOMINAL TUBE OUTSIDE DIAMETER0.500 INCHES IN
THREAD CLASS2B
LENGTH TO SHOULDER0.723 INCHES NOMINAL IN
NOMINAL THREAD SIZE0.750 INCHES IN
THREAD DIRECTIONRIGHT-HAND
SMALLEST INSIDE DIAMETER0.570 INCHES NOMINAL IN
VERIFIED SUBSTITUTES & CROSS-REFERENCES 31
11240409-5Interchangeable
interchangeable cross-reference
interchangeable
3-2149-7Interchangeable
interchangeable cross-reference
interchangeable
A318Interchangeable
interchangeable cross-reference
interchangeable
AN818-20JInterchangeable
interchangeable cross-reference
interchangeable
GN10FA-20Interchangeable
interchangeable cross-reference
interchangeable
811BT5Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusCANCELLED
Availability—
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is 8BTXB?
8BTXB is a NUT,TUBE COUPLING.
What parts can replace 8BTXB?
There are 31 known substitutes for 8BTXB: 11240409-5, 3-2149-7, A318 and 28 more. Substitute compatibility should be verified for your specific system.
Is 8BTXB still available?
8BTXB is currently cancelled.
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✓ Validated with multiple authoritative sources, including Government, OEM, and Certified sources.
PartsTable Design LLC · partstable.com
Last verified: July 2026