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A43 — TELEPHONE,SECURE UNIT

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

A43: TELEPHONE,SECURE UNIT.

The TELEPHONE,SECURE UNIT is a the manufacturer industrial component. Key specifications include end_item_identification: COMM SEC EQUIP. This part is cataloged in the U.S.

Government catalog under NSN 5360-00-290-8912, 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→ A43
NSN: 5360-00-290-8912
NIINs: 002908912, 005041364, 005290349, 005553083, 006435414, 006449035, 009439432, 011338097, 013750514, 014269471
FSC: 5360 — Coil, Flat, Leaf, and Wire Springs
CAGE: 830Q4 — CURTISS-WRIGHT ELECTRO-MECHANICAL CORPORATION DBA CURTISS-WRIGHT STEAM AND AIR SOLUTIONS DIV STEAM AND AIR SOLUTIONS (USA)
SPECIFICATIONS
end_item_identificationCOMM SEC EQUIP
NSN5360-00-290-8912
COMPONENT DIAGRAM
COMPONENT MAIN IC EDGE CONNECTOR No detailed specs available TELEPHONE,SECURE UNIT TITLE COMPONENT PN A43 MFR TELEPHONE,SECURE UNIT
KEY FEATURES
•
SPRING FREE OUTSIDE DIAMETER: 1.063 INCHES NOMINAL IN
•
END STYLE: SPRING END,SQUARED AND GROUND BOTH ENDS
•
STYLE DESIGNATOR: CYLINDRICAL
•
SPRING FREE LENGTH: 2.250 INCHES NOMINAL IN
•
SPRING DEFLECTION RATE: 155.000 POUNDS PER INCH NOMINAL LBS
•
INSIDE DIAMETER: 0.750 INCHES NOMINAL IN
•
COIL QUANTITY: 9-3/8
•
SURFACE TREATMENT: CADMIUM OVERALL
TECHNICAL CHARACTERISTICS
SPRING FREE OUTSIDE DIAMETER1.063 INCHES NOMINAL IN
END STYLESPRING END,SQUARED AND GROUND BOTH ENDS
STYLE DESIGNATORCYLINDRICAL
SPRING FREE LENGTH2.250 INCHES NOMINAL IN
SPRING DEFLECTION RATE155.000 POUNDS PER INCH NOMINAL LBS
INSIDE DIAMETER0.750 INCHES NOMINAL IN
COIL QUANTITY9-3/8
SURFACE TREATMENTCADMIUM OVERALL
COIL HELIX DIRECTIONRIGHT-HAND
MATERIALSTEEL OVERALL
SUBSTITUTES & CROSS-REFERENCES 4
185450PC375-8Reference document
Same NSN cross-reference
Reference document — Secondary reference
185414-482Reference document
Same NSN cross-reference
Reference document — Secondary reference
185450PC378-8Reference document
Same NSN cross-reference
Reference document — Secondary reference
185414PC426Reference document
Same NSN cross-reference
Reference document — Secondary reference
LIFECYCLE
NSN statusActive· U.S. Government catalog
Acquisition advice: Normally procured from the manufacturer (OEM)No demilitarization required
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FREQUENTLY ASKED QUESTIONS
What is A43?
A43 is a TELEPHONE,SECURE UNIT. It is classified as a MRO (MRO_GENERAL).
What parts can replace A43?
There are 4 known substitutes for A43: 185450PC375-8, 185414-482, 185450PC378-8 and 1 more. Substitute compatibility should be verified for your specific system.
What is the NSN for A43?
A43 is cataloged in the U.S. Government catalog under NSN 5360-00-290-8912. 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.