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Technical Data Sheet
PartsTable / COMPONENT / LT-188
LT-188 ✓ 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 ADAPTER,STRAIGHT,PIPE TO TUBE is a the manufacturer industrial component. Key specifications include material: STEEL COMP 12L14 OVERALL, leg_length: 1.750 INCHES NOMINAL FIRST END IN, seat_angle: 37.0 DEGREES ALL ENDS, thread_class: 2A THIRD END A, connection_type: THREADED EXTERNAL TUBE SECOND END, connection_style: FLARED (TUBE) SECOND END. This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 4730-00-618-5381, 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
LT-188
NSN: 4730-00-618-5381
FSC: 4730
CAGE: 46717 — PETTIBONE LLC (USA)
SPECIFICATIONS
materialSTEEL COMP 12L14 OVERALL
leg_length1.750 INCHES NOMINAL FIRST END IN
seat_angle37.0 DEGREES ALL ENDS
thread_class2A THIRD END A
connection_typeTHREADED EXTERNAL TUBE SECOND END
connection_styleFLARED (TUBE) SECOND END
surface_treatmentCADMIUM AND ZINC OVERALL
operating_pressure3000.0 POUNDS PER SQUARE INCH (PSI) MAXIMUM SINGLE RESPONSE LBS
nominal_thread_size1.062 INCHES ALL ENDS IN
maximum_operating_temp400.0 FAHRENHEIT SINGLE RESPONSE DEGF
media_for_which_designedHYDRAULIC FLUID FIRST RESPONSE
thread_quantity_per_inch12 ALL ENDS
NSN4730-00-618-5381
COMPONENT DIAGRAM
HOSE FITTING — THREAD TYPE IS CRITICAL END A: — STRAIGHT END B: — SPECIFICATIONS Thread: — Material: — Pressure: — PN: LT-188 · 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
VERIFIED SUBSTITUTES & CROSS-REFERENCES 22
3543-037Interchangeable
interchangeable cross-reference
interchangeable
B7478-81Interchangeable
interchangeable cross-reference
interchangeable
B7478Interchangeable
interchangeable cross-reference
interchangeable
81-7478Interchangeable
interchangeable cross-reference
interchangeable
125A4260G1Interchangeable
interchangeable cross-reference
interchangeable
C9119-3Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusCANCELLED
Availability—
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is LT-188?
LT-188 is a ADAPTER,STRAIGHT,PIPE TO TUBE.
What parts can replace LT-188?
There are 22 known substitutes for LT-188: 3543-037, B7478-81, B7478 and 19 more. Substitute compatibility should be verified for your specific system.
Is LT-188 still available?
LT-188 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