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L1547 — INTERFACE UNIT,COMMUNICATION EQU

✓ Government record, cited
— · MRO · MRO_GENERAL
PRODUCT OVERVIEW

L1547: INTERFACE UNIT,COMMUNICATION EQU.

INTERFACE UNIT,COMMUNICATION EQU. Key specifications include material: STEEL OVERALL, nut_style: TUBE COUPLING, nut_height: 0.625 INCHES NOMINAL IN, thread_class: 3B, thread_series: UNF, special_features: POWER INPUT: 12 TO 16 VDC; FREQUENCY RESPONSE: PORM 3DB AT 300 TO 3000 HZ VDC. This part is cataloged in the U.S.

Government catalog under NSN 4730-00-423-8080, 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
MRO→ MRO_GENERAL→ L1547
NSN: 4730-00-423-8080
NIINs: 004238080, 014509389
FSC: 4730 — Hose, Pipe, Tube, Lubrication, and Railing Fittings
CAGE: 11083 — CATERPILLAR INC DIV CATERPILLAR DEFENSE (USA)
SPECIFICATIONS
materialSTEEL OVERALL
nut_styleTUBE COUPLING
nut_height0.625 INCHES NOMINAL IN
thread_class3B
thread_seriesUNF
special_featuresPOWER INPUT: 12 TO 16 VDC; FREQUENCY RESPONSE: PORM 3DB AT 300 TO 3000 HZ VDC
thread_directionRIGHT-HAND
length_to_shoulder0.438 INCHES NOMINAL IN
width_across_flats0.938 INCHES NOMINAL IN
nominal_thread_size0.750 INCHES IN
smallest_inside_diameter0.563 INCHES NOMINAL IN
thread_quantity_per_inch16
NSN4730-00-423-8080
COMPONENT DIAGRAM
HOSE FITTING — THREAD TYPE IS CRITICAL END A: — STRAIGHT END B: — SPECIFICATIONS Thread: — Material: — Pressure: — PN: L1547 · 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: 0.438 INCHES NOMINAL IN
•
WIDTH ACROSS FLATS: 0.938 INCHES NOMINAL IN
•
THREAD SERIES: UNF
•
THREAD DIRECTION: RIGHT-HAND
•
NOMINAL THREAD SIZE: 0.750 INCHES IN
•
NUT HEIGHT: 0.625 INCHES NOMINAL IN
•
NUT STYLE: TUBE COUPLING
•
THREAD CLASS: 3B
TECHNICAL CHARACTERISTICS
LENGTH TO SHOULDER0.438 INCHES NOMINAL IN
WIDTH ACROSS FLATS0.938 INCHES NOMINAL IN
THREAD SERIESUNF
THREAD DIRECTIONRIGHT-HAND
NOMINAL THREAD SIZE0.750 INCHES IN
NUT HEIGHT0.625 INCHES NOMINAL IN
NUT STYLETUBE COUPLING
THREAD CLASS3B
THREAD QUANTITY PER INCH16
MATERIALSTEEL OVERALL
SUBSTITUTES & CROSS-REFERENCES

No substitute or cross-reference records for this part.

LIFECYCLE
NSN statusActive· U.S. Government catalog
No demilitarization required
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FREQUENTLY ASKED QUESTIONS
What is L1547?
L1547 is a INTERFACE UNIT,COMMUNICATION EQU. It is classified as a MRO (MRO_GENERAL).
What is the NSN for L1547?
L1547 is cataloged in the U.S. Government catalog under NSN 4730-00-423-8080. This indicates validated use in U.S. government and defense supply chains.
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✓ PartsTable — the parts reference. Every fact cited to its source.
PartsTable Design LLC · partstable.com
U.S. Government catalog: edition PUBLOGDVD v12.0.0 (OCT 2026), edition date 2026-10-01, retrieved 2026-10-18.
PartsTable commercial catalog: edition Unified commercial catalog snapshot through 2026-09-28, edition date not on file, retrieved 2026-09-28.