PartsTable
Technical Data Sheet
PartsTable / COMPONENT / 20-175
20-175 ✓ Verified by PartsTable
Freecom · 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

<b>Audio cable to connect your smartphone to your portable speakers or car stereo</b><br>- Flat, anti-tangle cable with soft rubber coating<br>- For use with all smartphones<br>- 1m cable length<br>- High quality gold plated plugs<br>- Also for iPod, tablets and other devices with 3.5mm (headphone)output This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 4730-00-139-4524, 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
20-175
NSN: 4730-00-139-4524
FSC: 4730
CAGE: 13841 — TIFFIN PARTS, L.L.C. DIV SUBSIDIARY OF PETTIBONE CORP. (USA)
SPECIFICATIONS
materialCOPPER ALLOY
thread_size3-1/4-12
thread_class2A A
usage_designINDOOR
overall_depth2.000 INCHES NOMINAL IN
terminal_typeTAB, SOLDER LUG
thread_length0.859 INCHES NOMINAL IN
overall_height0.260 INCHES MAXIMUM IN
overall_length1.500 INCHES NOMINAL IN
mounting_methodCLAMP
transducer_typeCONE
overall_diameter5.750 INCHES NOMINAL IN
NSN4730-00-139-4524
COMPONENT DIAGRAM
HOSE FITTING — THREAD TYPE IS CRITICAL END A: — STRAIGHT END B: — SPECIFICATIONS Thread: — Material: — Pressure: — PN: 20-175 · Freecom ⚠ 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
•
MAJOR UNTHREADED OUTSIDE DIAMETER: 3.125 INCHES NOMINAL IN
•
WIDTH ACROSS FLATS: 2.875 INCHES NOMINAL IN
•
SMALLEST INSIDE DIAMETER: 2.503 INCHES MINIMUM AND 2.505 INCHES MAXIMUM IN
•
MATERIAL: COPPER ALLOY
•
THREAD CLASS: 2A A
•
LARGEST INSIDE DIAMETER: 2.810 INCHES MINIMUM AND 2.815 INCHES MAXIMUM IN
•
THREAD LENGTH: 0.859 INCHES NOMINAL IN
TECHNICAL CHARACTERISTICS (FLIS)
MAJOR UNTHREADED OUTSIDE DIAMETER3.125 INCHES NOMINAL IN
WIDTH ACROSS FLATS2.875 INCHES NOMINAL IN
SMALLEST INSIDE DIAMETER2.503 INCHES MINIMUM AND 2.505 INCHES MAXIMUM IN
MATERIALCOPPER ALLOY
THREAD CLASS2A A
LARGEST INSIDE DIAMETER2.810 INCHES MINIMUM AND 2.815 INCHES MAXIMUM IN
OVERALL LENGTH1.500 INCHES NOMINAL IN
THREAD LENGTH0.859 INCHES NOMINAL IN
CASEHARDENING INDICATORNOT CASEHARDENED
THREAD SIZE3-1/4-12
VERIFIED SUBSTITUTES & CROSS-REFERENCES 6
20175Interchangeable
interchangeable cross-reference
interchangeable
2N1008BInterchangeable
interchangeable cross-reference
interchangeable
856-021-00000Interchangeable
interchangeable cross-reference
interchangeable
989107-2Interchangeable
interchangeable cross-reference
interchangeable
EV3923Interchangeable
interchangeable cross-reference
interchangeable
SR-000020170Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is 20-175?
20-175 is a LOUDSPEAKER,ELECTROMAGNETIC manufactured by Freecom.
What parts can replace 20-175?
There are 6 known substitutes for 20-175: 20175, 2N1008B, 856-021-00000 and 3 more. Substitute compatibility should be verified for your specific system.
What is the NSN for 20-175?
20-175 is cataloged in the Federal Logistics Information System (FLIS) under NSN 4730-00-139-4524. 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