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1787809-9 ✓ 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,RADIO FREQUENCY CABLE is a the manufacturer cable assembly designed for reliable internal or external connectivity in enterprise server and storage environments. Key specifications include material: STEEL OVERALL, nut_style: TUBE COUPLING, nut_height: 1.219 INCHES NOMINAL IN, thread_class: 2B, thread_series: UNF, thread_direction: RIGHT-HAND. This product is currently in active production with full OEM support.

This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 4730-00-678-9720, 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
1787809-9
NSN: 4730-00-678-9720
FSC: 4730
CAGE: 10001 — NAVAIR AND NAVSEA MANAGED ORIGINAL DESIGN ACTIVITY DWG NOT MATERIAL/PARTS SUPPLIER (USA)
SPECIFICATIONS
materialSTEEL OVERALL
nut_styleTUBE COUPLING
nut_height1.219 INCHES NOMINAL IN
thread_class2B
thread_seriesUNF
thread_directionRIGHT-HAND
surface_treatmentPHOSPHATE OVERALL
fabrication_methodMACHINED
length_to_shoulder0.781 INCHES NOMINAL IN
width_across_flats1.625 INCHES NOMINAL IN
nominal_thread_size1.500 INCHES IN
smallest_inside_diameter1.031 INCHES NOMINAL IN
NSN4730-00-678-9720
COMPONENT DIAGRAM
HOSE FITTING — THREAD TYPE IS CRITICAL END A: — STRAIGHT END B: — SPECIFICATIONS Thread: — Material: — Pressure: — PN: 1787809-9 · 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
•
LENGTH TO SHOULDER: 0.781 INCHES NOMINAL IN
•
NUT HEIGHT: 1.219 INCHES NOMINAL IN
•
SURFACE TREATMENT DOCUMENT AND CLASSIFICATION: MIL-C-16232,TYPE 1 MIL SPEC SINGLE TREATMENT RESPONSE OVERALL
•
SURFACE TREATMENT: PHOSPHATE OVERALL
•
MATERIAL: STEEL OVERALL
•
WIDTH ACROSS FLATS: 1.625 INCHES NOMINAL IN
•
THREAD DIRECTION: RIGHT-HAND
•
THREAD CLASS: 2B
TYPICAL APPLICATIONS
  • Server Internal Cabling
  • Data Center Cable Infrastructure
  • SAS/SATA Drive Connectivity
TECHNICAL CHARACTERISTICS (FLIS)
LENGTH TO SHOULDER0.781 INCHES NOMINAL IN
NUT HEIGHT1.219 INCHES NOMINAL IN
SURFACE TREATMENT DOCUMENT AND CLASSIFICATIONMIL-C-16232,TYPE 1 MIL SPEC SINGLE TREATMENT RESPONSE OVERALL
SURFACE TREATMENTPHOSPHATE OVERALL
MATERIALSTEEL OVERALL
WIDTH ACROSS FLATS1.625 INCHES NOMINAL IN
THREAD DIRECTIONRIGHT-HAND
THREAD CLASS2B
SMALLEST INSIDE DIAMETER1.031 INCHES NOMINAL IN
THREAD QUANTITY PER INCH12
VERIFIED SUBSTITUTES & CROSS-REFERENCES 8
54A50B171Interchangeable
interchangeable cross-reference
interchangeable
20516Interchangeable
interchangeable cross-reference
interchangeable
ALNJC1F45AInterchangeable
interchangeable cross-reference
interchangeable
7419631P1Interchangeable
interchangeable cross-reference
interchangeable
A-A-2755Interchangeable
interchangeable cross-reference
interchangeable
1200-12Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is 1787809-9?
1787809-9 is a ADAPTER,RADIO FREQUENCY CABLE.
What parts can replace 1787809-9?
There are 8 known substitutes for 1787809-9: 54A50B171, 20516, ALNJC1F45A and 5 more. Substitute compatibility should be verified for your specific system.
What is the NSN for 1787809-9?
1787809-9 is cataloged in the Federal Logistics Information System (FLIS) under NSN 4730-00-678-9720. 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