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Technical Data Sheet
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20-255 — Technical Data Sheet

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Legrand · COMPONENT
WHAT YOU NEED TO KNOW
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Confirm exact part number — similar PNs may be different parts
PRODUCT OVERVIEW

Thin keyboard with low-profile keys for smooth and quiet typing. Key specifications include material: NICKEL ALLOY OVERALL, load_type: RESISTIVE, body_style: SQUARE FLANGE MOUNT, body_width: 0.280 INCHES MAXIMUM IN, shell_type: SOLID, body_height: 0.200 INCHES MAXIMUM IN. This product is currently in active production with full OEM support.

This part is cataloged in the Federal Logistics Information System under NSN 3431-00-086-1178, 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
20-255
NSN: 3431-00-086-1178
FSC: 3431
CAGE: 14011 — STANDARD WELDERS EQUIPMENT CORPORATION (USA)
SPECIFICATIONS
materialNICKEL ALLOY OVERALL
load_typeRESISTIVE
body_styleSQUARE FLANGE MOUNT
body_width0.280 INCHES MAXIMUM IN
shell_typeSOLID
body_height0.200 INCHES MAXIMUM IN
body_length0.785 INCHES MAXIMUM IN
bonnet_typeINSIDE SPRING
temp_rating50.0 CELSIUS DEGC
overall_width4.125 INCHES NOMINAL IN
terminal_typeSOLDER LUG
overall_height14.000 INCHES NOMINAL IN
NSN3431-00-086-1178
COMPONENT DIAGRAM
COMPONENT MAIN IC EDGE CONNECTOR MFR: Legrand CONNECTOR,RECEPTACLE,ELECTRICAL TITLE COMPONENT PN 20-255 MFR Legrand CONNECTOR,RECEPTACLE,E
KEY FEATURES
•
MATERIAL: CERAMIC
•
STYLE DESIGNATOR: STRAIGHT
•
MOUNTING END DIAMETER: 0.5625 INCHES NOMINAL IN
•
WELDING PROCESS FOR WHICH DESIGNED: INERT GAS TUNGSTEN ARC
•
ORIFICE DIAMETER: 0.3125 INCHES NOMINAL IN
TECHNICAL CHARACTERISTICS
SPECIAL FEATURESCUP NO. 5
MATERIALCERAMIC
STYLE DESIGNATORSTRAIGHT
OVERALL LENGTH1.1562 INCHES NOMINAL IN
MOUNTING END DIAMETER0.5625 INCHES NOMINAL IN
END ITEM IDENTIFICATIONLINDE HW-20 AND 25 TORCH
WELDING PROCESS FOR WHICH DESIGNEDINERT GAS TUNGSTEN ARC
ORIFICE DIAMETER0.3125 INCHES NOMINAL IN
VERIFIED SUBSTITUTES & CROSS-REFERENCES 27
261-11-06-010InterchangeableGOVERNMENT REGISTRY
interchangeable cross-reference
interchangeable
W226672InterchangeableGOVERNMENT REGISTRY
interchangeable cross-reference
interchangeable
5510320002InterchangeableGOVERNMENT REGISTRY
interchangeable cross-reference
interchangeable
SD1713InterchangeableGOVERNMENT REGISTRY
interchangeable cross-reference
interchangeable
4901-911801PC422InterchangeableGOVERNMENT REGISTRY
interchangeable cross-reference
interchangeable
MM54C04JInterchangeableGOVERNMENT REGISTRY
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusACTIVEGOVERNMENT REGISTRY
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is 20-255?
20-255 is a CONNECTOR,RECEPTACLE,ELECTRICAL manufactured by Legrand.
What parts can replace 20-255?
There are 27 known substitutes for 20-255: 261-11-06-010, W226672, 5510320002 and 24 more. Substitute compatibility should be verified for your specific system.
What is the NSN for 20-255?
20-255 is cataloged in the Federal Logistics Information System under NSN 3431-00-086-1178. 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: September 2026