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PartsTable / COMPONENT / 666957
666957 ✓ Verified by PartsTable
Legrand · 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 666957 is a Legrand industrial component. Key specifications include depth: 2.800 INCHES NOMINAL IN, width: 9.100 INCHES NOMINAL IN, length: 11.200 INCHES NOMINAL IN, ac_voltage_rating: 100.0 VOLTS MINIMUM AND 240.0 VOLTS MAXIMUM FIRST OPERATING POWER RQMT, enclosure_feature: SINGLE ITEM W/CARRYING CASE, test_type_for_which_designed: RADIO FUNCTIONS. This product is currently in active production with full OEM support.

This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 2520-00-423-0794, 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
666957
NSN: 2520-00-423-0794
FSC: 2520
CAGE: 58275 — SASCO INC CANADIAN DIV
SPECIFICATIONS
depth2.800 INCHES NOMINAL IN
width9.100 INCHES NOMINAL IN
length11.200 INCHES NOMINAL IN
ac_voltage_rating100.0 VOLTS MINIMUM AND 240.0 VOLTS MAXIMUM FIRST OPERATING POWER RQMT
enclosure_featureSINGLE ITEM W/CARRYING CASE
test_type_for_which_designedRADIO FUNCTIONS
part_name_assigned_by_controlling_agencyTOUCH-SCREEN RADIO TEST SYSTEM
NSN2520-00-423-0794
COMPONENT DIAGRAM
COMPONENT MAIN IC EDGE CONNECTOR MFR: Legrand 666957 TITLE COMPONENT PN 666957 MFR Legrand 666957
VERIFIED SUBSTITUTES & CROSS-REFERENCES 18
3550Interchangeable
interchangeable cross-reference
interchangeable
3491Interchangeable
interchangeable cross-reference
interchangeable
3553Interchangeable
interchangeable cross-reference
interchangeable
2228826Interchangeable
interchangeable cross-reference
interchangeable
394660C91Interchangeable
interchangeable cross-reference
interchangeable
FPP16Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is 666957?
666957 is a 666957 manufactured by Legrand.
What parts can replace 666957?
There are 18 known substitutes for 666957: 3550, 3491, 3553 and 15 more. Substitute compatibility should be verified for your specific system.
What is the NSN for 666957?
666957 is cataloged in the Federal Logistics Information System (FLIS) under NSN 2520-00-423-0794. 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