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PartsTable / COMPONENT / B559-266
B559-266 ✓ 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 NONMETALLIC TEE SECTION is a the manufacturer industrial component. Key specifications include length: 3.500 INCHES NOMINAL IN, leg_thickness: 0.250 INCHES NOMINAL IN, overall_height: 0.343 INCHES NOMINAL IN, first/top_flange_width: 0.438 INCHES NOMINAL IN, environmental_protection: OIL RESISTANT, first/top_flange_thickness: 0.187 INCHES NOMINAL 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 9390-00-082-1543, 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
B559-266
NSN: 9390-00-082-1543
FSC: 9390
CAGE: 34228 — L3 TECHNOLOGIES, INC. DIV L3 KEO (USA)
SPECIFICATIONS
length3.500 INCHES NOMINAL IN
leg_thickness0.250 INCHES NOMINAL IN
overall_height0.343 INCHES NOMINAL IN
first/top_flange_width0.438 INCHES NOMINAL IN
environmental_protectionOIL RESISTANT
first/top_flange_thickness0.187 INCHES NOMINAL IN
nondefinitive_spec/std_dataI TYPE AND 1 CLASS AND EXTRUDED FORM
nonmetallic_hardness_rating45.0 MINIMUM SHORE DUROMETER A AND 55.0 MAXIMUM SHORE DUROMETER A
NSN9390-00-082-1543
COMPONENT DIAGRAM
COMPONENT MAIN IC EDGE CONNECTOR No detailed specs available NONMETALLIC TEE SECTION TITLE COMPONENT PN B559-266 MFR NONMETALLIC TEE SECTIO
KEY FEATURES
•
NONMETALLIC HARDNESS RATING: 45.0 MINIMUM SHORE DUROMETER A AND 55.0 MAXIMUM SHORE DUROMETER A
•
ENVIRONMENTAL PROTECTION: OIL RESISTANT
•
FIRST/TOP FLANGE THICKNESS: 0.187 INCHES NOMINAL IN
•
LENGTH: 3.500 INCHES NOMINAL IN
•
FIRST/TOP FLANGE WIDTH: 0.438 INCHES NOMINAL IN
•
LEG THICKNESS: 0.250 INCHES NOMINAL IN
•
NONDEFINITIVE SPEC/STD DATA: I TYPE AND 1 CLASS AND EXTRUDED FORM
TECHNICAL CHARACTERISTICS (FLIS)
NONMETALLIC HARDNESS RATING45.0 MINIMUM SHORE DUROMETER A AND 55.0 MAXIMUM SHORE DUROMETER A
OVERALL HEIGHT0.343 INCHES NOMINAL IN
ENVIRONMENTAL PROTECTIONOIL RESISTANT
FIRST/TOP FLANGE THICKNESS0.187 INCHES NOMINAL IN
LENGTH3.500 INCHES NOMINAL IN
FIRST/TOP FLANGE WIDTH0.438 INCHES NOMINAL IN
LEG THICKNESS0.250 INCHES NOMINAL IN
NONDEFINITIVE SPEC/STD DATAI TYPE AND 1 CLASS AND EXTRUDED FORM
VERIFIED SUBSTITUTES & CROSS-REFERENCES 13
MIL-R-1149Interchangeable
interchangeable cross-reference
interchangeable
TYPE1CLASS1Interchangeable
interchangeable cross-reference
interchangeable
251625PC8Interchangeable
interchangeable cross-reference
interchangeable
702783Interchangeable
interchangeable cross-reference
interchangeable
525-4366504 PART NO.7 AND 15Interchangeable
interchangeable cross-reference
interchangeable
MILG1149TY1CY2Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is B559-266?
B559-266 is a NONMETALLIC TEE SECTION.
What parts can replace B559-266?
There are 13 known substitutes for B559-266: MIL-R-1149, TYPE1CLASS1, 251625PC8 and 10 more. Substitute compatibility should be verified for your specific system.
What is the NSN for B559-266?
B559-266 is cataloged in the Federal Logistics Information System (FLIS) under NSN 9390-00-082-1543. 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