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PartsTable / COMPONENT / M15742-4
M15742-4 ✓ 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 PLUG,TUBE REPAIR is a the manufacturer industrial component. Key specifications include material: PLASTIC, major_diameter: 0.500 INCHES NOMINAL IN, minor_diameter: 0.312 INCHES NOMINAL IN, nominal_overall_length: 2.000 INCHES IN, end_item_identification: HEAT EXCHANGER TUBE REPAIR, nominal_outside_diameter_tube_accommodated: 0.500 INCHES IN. This product is currently in active production with full OEM support.

This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 4730-00-821-0795, 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
M15742-4
NSN: 4730-00-821-0795
FSC: 4730
CAGE: 81349 — MILITARY SPECIFICATIONS PROMULGATED BY MILITARY DEPARTMENTS/AGENCIES UNDER AUTHORITY OF DEFENSE STANDARDIZATION MANUAL 4120 3-M
SPECIFICATIONS
materialPLASTIC
major_diameter0.500 INCHES NOMINAL IN
minor_diameter0.312 INCHES NOMINAL IN
nominal_overall_length2.000 INCHES IN
end_item_identificationHEAT EXCHANGER TUBE REPAIR
nominal_outside_diameter_tube_accommodated0.500 INCHES IN
NSN4730-00-821-0795
COMPONENT DIAGRAM
HOSE FITTING — THREAD TYPE IS CRITICAL END A: — STRAIGHT END B: — SPECIFICATIONS Thread: — Material: — Pressure: — PN: M15742-4 · 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
•
MATERIAL: PLASTIC
•
NOMINAL OVERALL LENGTH: 2.000 INCHES IN
•
MAJOR DIAMETER: 0.500 INCHES NOMINAL IN
•
MINOR DIAMETER: 0.312 INCHES NOMINAL IN
•
NOMINAL OUTSIDE DIAMETER TUBE ACCOMMODATED: 0.500 INCHES IN
TECHNICAL CHARACTERISTICS (FLIS)
MATERIALPLASTIC
NOMINAL OVERALL LENGTH2.000 INCHES IN
MAJOR DIAMETER0.500 INCHES NOMINAL IN
MINOR DIAMETER0.312 INCHES NOMINAL IN
END ITEM IDENTIFICATIONHEAT EXCHANGER TUBE REPAIR
NOMINAL OUTSIDE DIAMETER TUBE ACCOMMODATED0.500 INCHES IN
VERIFIED SUBSTITUTES & CROSS-REFERENCES 20
MIL-P-15742-5/8INInterchangeable
interchangeable cross-reference
interchangeable
MILP15742Interchangeable
interchangeable cross-reference
interchangeable
F3116132PC39Interchangeable
interchangeable cross-reference
interchangeable
B5450TBPGInterchangeable
interchangeable cross-reference
interchangeable
3261283Interchangeable
interchangeable cross-reference
interchangeable
DLGN3034Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is M15742-4?
M15742-4 is a PLUG,TUBE REPAIR.
What parts can replace M15742-4?
There are 20 known substitutes for M15742-4: MIL-P-15742-5/8IN, MILP15742, F3116132PC39 and 17 more. Substitute compatibility should be verified for your specific system.
What is the NSN for M15742-4?
M15742-4 is cataloged in the Federal Logistics Information System (FLIS) under NSN 4730-00-821-0795. 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