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PartsTable / COMPONENT / EFO-X021 REV C
EFO-X021 REV C ✓ 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 LENS,LIGHT is a the manufacturer industrial component. Key specifications include material: STEEL, back_type: STRAIGHT, shank_type: UNIVERSAL, usage_design: FOR RECIPROCATING SAW; FOR CUTTING METALS 1/8 IN. AND OVER IN, overall_length: 17.000 INCHES NOMINAL IN, special_features: 12 IN.

CURVED BLADE IN. This product is currently in active production with full OEM support. This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 6210-01-681-1964, 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
EFO-X021 REV C
NSN: 6210-01-681-1964
FSC: 6210
CAGE: 1BD15 — ENERGY FOCUS, INC. DIV MMM (USA)
SPECIFICATIONS
materialSTEEL
back_typeSTRAIGHT
shank_typeUNIVERSAL
usage_designFOR RECIPROCATING SAW; FOR CUTTING METALS 1/8 IN. AND OVER IN
overall_length17.000 INCHES NOMINAL IN
special_features12 IN. CURVED BLADE IN
features_providedSCREWDRIVER HANDLE
nominal_shank_size0.500 INCHES IN
width_across_flats0.375 INCHES NOMINAL IN
center_hole_diameter0.544 INCHES MINIMUM AND 0.554 INCHES MAXIMUM IN
cross-sectional_height0.047 INCHES MINIMUM AND 0.053 INCHES MAXIMUM IN
end_item_identification6520-01-147-4654
NSN6210-01-681-1964
COMPONENT DIAGRAM
COMPONENT MAIN IC EDGE CONNECTOR No detailed specs available LENS,LIGHT TITLE COMPONENT PN EFO-X021 REV C MFR LENS,LIGHT
VERIFIED SUBSTITUTES & CROSS-REFERENCES 14
02-90521Interchangeable
interchangeable cross-reference
interchangeable
02-90521-1Interchangeable
interchangeable cross-reference
interchangeable
4-0111Interchangeable
interchangeable cross-reference
interchangeable
49111Interchangeable
interchangeable cross-reference
interchangeable
401111Interchangeable
interchangeable cross-reference
interchangeable
01111Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is EFO-X021 REV C?
EFO-X021 REV C is a LENS,LIGHT.
What parts can replace EFO-X021 REV C?
There are 14 known substitutes for EFO-X021 REV C: 02-90521, 02-90521-1, 4-0111 and 11 more. Substitute compatibility should be verified for your specific system.
What is the NSN for EFO-X021 REV C?
EFO-X021 REV C is cataloged in the Federal Logistics Information System (FLIS) under NSN 6210-01-681-1964. This indicates validated use in U.S. government and defense supply chains.
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✓ Validated with multiple authoritative sources, including Government, OEM, and Certified sources.
PartsTable Design LLC · partstable.com
Last verified: July 2026