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120-503 — 120-503

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

120-503: 120-503.

The 120-503 is a the manufacturer industrial component. Key specifications include end_item_identification: AIRSYS MARK 20 (COMMERCIAL) (MARK 20A) A, part_name_assigned_by_controlling_agency: CCA, MOD/PA LOC. This part is cataloged in the U.S.

Government catalog under NSN 5930-00-186-2345, 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→ 120-503
NSN: 5930-00-186-2345
NIINs: 001862345, 004420179, 010254655, 015421928
FSC: 5930 — Switches
CAGE: 0PN68 — AMPEX DATA SYSTEMS CORPORATION DBA AMPEX INTELLIGENT SYSTEMS (USA)
SPECIFICATIONS
end_item_identificationAIRSYS MARK 20 (COMMERCIAL) (MARK 20A) A
part_name_assigned_by_controlling_agencyCCA, MOD/PA LOC
NSN5930-00-186-2345
COMPONENT DIAGRAM
COMPONENT MAIN IC EDGE CONNECTOR No detailed specs available 120-503 TITLE COMPONENT PN 120-503 MFR 120-503
KEY FEATURES
•
BUSHING LENGTH: 0.469 INCHES NOMINAL IN
•
INCLOSURE TYPE: FULLY INCLOSED
•
BODY STYLE: BUSHING MOUNT
•
ACTUATOR STYLE: RECTANGULAR
•
MOUNTING METHOD: THREADED BUSHING
•
BODY WIDTH: 0.641 INCHES NOMINAL IN
•
MOUNTING SURFACE TO TERMINAL END DISTANCE: 0.625 INCHES NOMINAL IN
TECHNICAL CHARACTERISTICS
BUSHING LENGTH0.469 INCHES NOMINAL IN
OVERALL HEIGHT1.750 INCHES NOMINAL IN
INCLOSURE TYPEFULLY INCLOSED
BODY STYLEBUSHING MOUNT
ACTUATOR STYLERECTANGULAR
MOUNTING METHODTHREADED BUSHING
BODY WIDTH0.641 INCHES NOMINAL IN
MOUNTING SURFACE TO TERMINAL END DISTANCE0.625 INCHES NOMINAL IN
OVERALL LENGTH1.031 INCHES NOMINAL IN
OVERALL WIDTH0.641 INCHES NOMINAL IN
SUBSTITUTES & CROSS-REFERENCES 1
83053CGReference document
Same NSN cross-reference
Reference document — Design control — primary reference
LIFECYCLE
NSN statusActive· U.S. Government catalog
Acquisition advice: Semi-active item — no replacement plannedNo demilitarization required
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FREQUENTLY ASKED QUESTIONS
What is 120-503?
120-503 is a 120-503. It is classified as a MRO (MRO_GENERAL).
What parts can replace 120-503?
There is 1 known substitute for 120-503: 83053CG. Substitute compatibility should be verified for your specific system.
What is the NSN for 120-503?
120-503 is cataloged in the U.S. Government catalog under NSN 5930-00-186-2345. 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.