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Technical Data Sheet
PartsTable / COMPONENT / 27742R1
27742R1 ✓ 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 material: STEEL OVERALL, nut_style: TUBE COUPLING, nut_height: 0.750 INCHES NOMINAL IN, seat_angle: 45.00 DEGREES NOMINAL, thread_class: 2B, thread_series: UNF. This product is currently in active production with full OEM support.

This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 4730-00-962-6202, 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
27742R1
NSN: 4730-00-962-6202
FSC: 4730
CAGE: 92679 — NAVISTAR INTL CORP MELROSE PARK ENGINE PLANT LOCATION /MELROSE PARK/ (USA)
SPECIFICATIONS
materialSTEEL OVERALL
nut_styleTUBE COUPLING
nut_height0.750 INCHES NOMINAL IN
seat_angle45.00 DEGREES NOMINAL
thread_class2B
thread_seriesUNF
thread_directionRIGHT-HAND
surface_treatmentCADMIUM OVERALL
length_to_shoulder0.439 INCHES NOMINAL IN
width_across_flats0.750 INCHES NOMINAL IN
nominal_thread_size0.625 INCHES IN
smallest_inside_diameter0.375 INCHES NOMINAL IN
NSN4730-00-962-6202
COMPONENT DIAGRAM
HOSE FITTING — THREAD TYPE IS CRITICAL END A: — STRAIGHT END B: — SPECIFICATIONS Thread: — Material: — Pressure: — PN: 27742R1 · 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
•
SEAT ANGLE: 45.00 DEGREES NOMINAL
•
SMALLEST INSIDE DIAMETER: 0.375 INCHES NOMINAL IN
•
THREAD SERIES: UNF
•
THREAD QUANTITY PER INCH: 18
•
LENGTH TO SHOULDER: 0.439 INCHES NOMINAL IN
•
MATERIAL: STEEL OVERALL
•
NUT STYLE: TUBE COUPLING
•
NUT HEIGHT: 0.750 INCHES NOMINAL IN
TECHNICAL CHARACTERISTICS (FLIS)
SEAT ANGLE45.00 DEGREES NOMINAL
SMALLEST INSIDE DIAMETER0.375 INCHES NOMINAL IN
THREAD SERIESUNF
THREAD QUANTITY PER INCH18
LENGTH TO SHOULDER0.439 INCHES NOMINAL IN
MATERIALSTEEL OVERALL
NUT STYLETUBE COUPLING
NUT HEIGHT0.750 INCHES NOMINAL IN
SURFACE TREATMENTCADMIUM OVERALL
WIDTH ACROSS FLATS0.750 INCHES NOMINAL IN
VERIFIED SUBSTITUTES & CROSS-REFERENCES 7
6511Interchangeable
interchangeable cross-reference
interchangeable
B7T77716AInterchangeable
interchangeable cross-reference
interchangeable
104923Interchangeable
interchangeable cross-reference
interchangeable
761FS3-8Interchangeable
Same NIIN cross-reference
interchangeable
17018R1Interchangeable
Same NIIN cross-reference
interchangeable
277742R1Interchangeable
Same NIIN cross-reference
interchangeable
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is 27742R1?
27742R1 is a NUT,TUBE COUPLING.
What parts can replace 27742R1?
There are 7 known substitutes for 27742R1: 6511, B7T77716A, 104923 and 4 more. Substitute compatibility should be verified for your specific system.
What is the NSN for 27742R1?
27742R1 is cataloged in the Federal Logistics Information System (FLIS) under NSN 4730-00-962-6202. 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