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Technical Data Sheet
R20840 ✓ Verified by PartsTable
· COMPONENT
WHAT YOU NEED TO KNOW
Verify manufacturer and server generation compatibility Check if Option PN or Spare PN — same part, different channel
Confirm exact part number — similar PNs may be different parts
PRODUCT OVERVIEW

The COUNTER SHAFT is a the manufacturer industrial component. Key specifications include base_style: MINIATURE BAYONET, bulb_style: T (TUBULAR), overall_length: 1.190 INCHES MAXIMUM IN, voltage_rating: 24.000 VOLTS NOMINAL, wattage_rating: 4.080 WATTS, bulb_designator: T-3 1/4. This product is currently in active production with full OEM support.

This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 2520-00-752-0918, 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
R20840
NSN: 2520-00-752-0918
FSC: 2520
CAGE: 83120 — PRESSED METALS OF AMERICA INC (USA)
SPECIFICATIONS
base_styleMINIATURE BAYONET
bulb_styleT (TUBULAR)
overall_length1.190 INCHES MAXIMUM IN
voltage_rating24.000 VOLTS NOMINAL
wattage_rating4.080 WATTS
bulb_designatorT-3 1/4
rated_average_lifeHOURS
light_center_length0.630 INCHES NOMINAL IN
light_output_rating3.300 SPHERICAL CANDLEPOWER NOMINAL SINGLE RATING
filament_designationC-2V V
average_life_rating_in_hours250.0
emitted_light_characteristicCOLORLESS
NSN2520-00-752-0918
COMPONENT DIAGRAM
COMPONENT MAIN IC EDGE CONNECTOR No detailed specs available COUNTER SHAFT TITLE COMPONENT PN R20840 MFR COUNTER SHAFT
VERIFIED SUBSTITUTES & CROSS-REFERENCES 12
ML-1818XInterchangeable
interchangeable cross-reference
interchangeable
1818Interchangeable
interchangeable cross-reference
interchangeable
99-8Interchangeable
interchangeable cross-reference
interchangeable
A99-8Interchangeable
interchangeable cross-reference
interchangeable
18187-1Interchangeable
interchangeable cross-reference
interchangeable
RC-2876-HInterchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is R20840?
R20840 is a COUNTER SHAFT.
What parts can replace R20840?
There are 12 known substitutes for R20840: ML-1818X, 1818, 99-8 and 9 more. Substitute compatibility should be verified for your specific system.
What is the NSN for R20840?
R20840 is cataloged in the Federal Logistics Information System (FLIS) under NSN 2520-00-752-0918. This indicates validated use in U.S. government and defense supply chains.
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