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842A — SWITCH,RADIO FREQUENCY TRANSMISS

✓ Government record, cited
— · COMPONENT
PRODUCT OVERVIEW

842A: SWITCH,RADIO FREQUENCY TRANSMISS.

SWITCH,RADIO FREQUENCY TRANSMISS. Key specifications include material: ALUMINUM ALLOY BODY, body_style: RECTANGULAR, switch_type: TRANSFER, overall_width: 1.562 INCHES NOMINAL IN, overall_height: 3.188 INCHES NOMINAL IN, overall_length: 3.4375 INCHES MINIMUM AND 3.5625 INCHES MAXIMUM IN. This part is cataloged in the U.S.

Government catalog under NSN 3030-00-528-4752, 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
842A
NSN: 3030-00-528-4752
FSC: 3030 — Belting, Drive Belts, Fan Belts, and Accessories
CAGE: 92780 — C-B TOOL CO (USA)
SPECIFICATIONS
materialALUMINUM ALLOY BODY
body_styleRECTANGULAR
switch_typeTRANSFER
overall_width1.562 INCHES NOMINAL IN
overall_height3.188 INCHES NOMINAL IN
overall_length3.4375 INCHES MINIMUM AND 3.5625 INCHES MAXIMUM IN
user_designatorOPERATING ROOM PERSONNEL
frequency_rating3.0 MEGAHERTZ MINIMUM AND 30.0 MEGAHERTZ MAXIMUM SINGLE FREQUENCY VOLTAGE STANDING WAVE RATIO
special_featuresEXTRA LARGE; W/ELASTIC WRIST CUFFS; DISPOSABLE; USED IN OPERATING ROOMS AND OTHER AREAS THAT HAVE CONTROLLED WORK ENVIRONMENT
adjustment_methodSLIDE FASTENER FRONT
surface_treatmentANODIZE BODY OUTSIDE SURFACES
nominal_thread_size0.138 INCHES MOUNTING FACILITY HOLE IN
NSN3030-00-528-4752
COMPONENT DIAGRAM
COMPONENT MAIN IC EDGE CONNECTOR No detailed specs available SWITCH,RADIO FREQUENCY TRANSMISS TITLE COMPONENT PN 842A MFR SWITCH,RADIO FREQUENCY
SUBSTITUTES & CROSS-REFERENCES 7
4L420Reference document
Same NSN cross-reference
Reference document — Secondary reference
FA42Reference document
Same NSN cross-reference
Reference document — Secondary reference
2420Reference document
Same NSN cross-reference
Reference document — Secondary reference
49-196Reference document
Same NSN cross-reference
Reference document — Secondary reference
74857878Reference document
Same NSN cross-reference
Reference document — Advisory reference — outside the item-of-supply concept
20AAH12Reference document
Same NSN cross-reference
Reference document — Secondary reference
LIFECYCLE
NSN statusCancelled· U.S. Government catalog
No demilitarization required
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FREQUENTLY ASKED QUESTIONS
What is 842A?
842A is a SWITCH,RADIO FREQUENCY TRANSMISS.
What parts can replace 842A?
There are 7 known substitutes for 842A: 4L420, FA42, 2420 and 4 more. Substitute compatibility should be verified for your specific system.
What is the NSN for 842A?
842A is cataloged in the U.S. Government catalog under NSN 3030-00-528-4752. 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.