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Technical Data Sheet
PartsTable / COMPONENT / 4187-381/TSE02-75
4187-381/TSE02-75 ✓ 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 4187-381/TSE02-75 is a the manufacturer industrial component. This product is currently in active production with full OEM support. This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 4730-01-190-2745, 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
4187-381/TSE02-75
NSN: 4730-01-190-2745
FSC: 4730
CAGE: 95208 — PARKER-HANNIFIN CORPORATION DIV CYLINDER DIVISION (USA)
SPECIFICATIONS
Part Number4187-381/TSE02-75
NSN4730-01-190-2745
COMPONENT DIAGRAM
HOSE FITTING — THREAD TYPE IS CRITICAL END A: — STRAIGHT END B: — SPECIFICATIONS Thread: — Material: — Pressure: — PN: 4187-381/TSE02-75 · 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
•
NOMINAL THREAD SIZE: 0.750 INCHES IN
•
REFERENCE NUMBER DIFFERENTIATING CHARACTERISTICS: MATERIAL WILL BE IN ACCORDANCE WITH SHIPS PARTS CONTROL CENTER ACTIVITY HX QUALITY CONTROL,MANUFACTURING AND TESTING SPECIFICATIONS
•
THREAD QUANTITY PER INCH: 14
•
MATERIAL: STEEL COMP 303 OVERALL
•
FURNISHED ITEMS: PREFORMED PACKING
•
CRITICALITY CODE JUSTIFICATION: ZZZY
•
THREAD DIRECTION: RIGHT-HAND
•
NUT HEIGHT: 0.266 INCHES NOMINAL IN
TECHNICAL CHARACTERISTICS (FLIS)
NOMINAL THREAD SIZE0.750 INCHES IN
REFERENCE NUMBER DIFFERENTIATING CHARACTERISTICSMATERIAL WILL BE IN ACCORDANCE WITH SHIPS PARTS CONTROL CENTER ACTIVITY HX QUALITY CONTROL,MANUFACTURING AND TESTING SPECIFICATIONS
THREAD QUANTITY PER INCH14
MATERIALSTEEL COMP 303 OVERALL
FURNISHED ITEMSPREFORMED PACKING
CRITICALITY CODE JUSTIFICATIONZZZY
THREAD DIRECTIONRIGHT-HAND
NUT HEIGHT0.266 INCHES NOMINAL IN
NUT STYLEPIPE SEAL NUT
WIDTH ACROSS FLATS0.938 INCHES NOMINAL IN
VERIFIED SUBSTITUTES & CROSS-REFERENCES 11
TRU-SEALInterchangeable
interchangeable cross-reference
interchangeable
TRU-SEAL 3-4Interchangeable
interchangeable cross-reference
interchangeable
JCM-11256-005Interchangeable
interchangeable cross-reference
interchangeable
4187-381/TSE02-25Interchangeable
interchangeable cross-reference
interchangeable
4187-381Interchangeable
interchangeable cross-reference
interchangeable
TSE02-25Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is 4187-381/TSE02-75?
4187-381/TSE02-75 is a 4187-381/TSE02-75.
What parts can replace 4187-381/TSE02-75?
There are 11 known substitutes for 4187-381/TSE02-75: TRU-SEAL, TRU-SEAL 3-4, JCM-11256-005 and 8 more. Substitute compatibility should be verified for your specific system.
What is the NSN for 4187-381/TSE02-75?
4187-381/TSE02-75 is cataloged in the Federal Logistics Information System (FLIS) under NSN 4730-01-190-2745. 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