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259505 — Technical Data Sheet

✓ Verified by PartsTable
— · NUT WASHER
WHAT YOU NEED TO KNOW
Match nut grade to bolt grade for full strength Lock nuts prevent loosening under vibration
Don't mix grades — weakens the joint
PRODUCT OVERVIEW

WEB,STRUCTURAL COMPONENT,AIRCRAF. Key specifications include height: 2.230 INCHES NOMINAL IN, material: STEEL CORROSION RESISTING OVERALL, body_style: TUBE TYPE, overall_length: 50.0 MILLIMETERS NOMINAL MM, connection_type: THREADED EXTERNAL PIPE ALL ENDS, inside_diameter: 0.580 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 5310-00-343-4409, 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
259505
NSN: 5310-00-343-4409
FSC: 5310
CAGE: 07187 — HONEYWELL INTERNATIONAL INC. DBA HONEYWELL INTERNATIONAL (USA)
SPECIFICATIONS
height2.230 INCHES NOMINAL IN
materialSTEEL CORROSION RESISTING OVERALL
body_styleTUBE TYPE
overall_length50.0 MILLIMETERS NOMINAL MM
connection_typeTHREADED EXTERNAL PIPE ALL ENDS
inside_diameter0.580 INCHES NOMINAL IN
connection_stylePLAIN (PIPE) ALL ENDS
overall_diameter0.250 INCHES NOMINAL IN
special_featuresLOCKING BOLT FOR UNIVERSAL FEMORAL-TIBIAL NAIL. 4.9MM DIA HEAD; USE IN THE AMEDULLARY CANAL MM
style_designatorROUND FLEXIBLE
features_providedNONRENEWABLE FUSIBLE ELEMENT
surface_treatmentNICKEL TERMINAL
NSN5310-00-343-4409
COMPONENT DIAGRAM
NUT & WASHER — GRADE MATCHING REQUIRED Hex NUT CROSS-SECTION WASHER OD: — SIZE: — MATERIAL: — PN: 259505 · OEM ⚠ VERIFY BEFORE ORDERING Grade matters for torque spec — don't mix grades. A Grade 5 nut on a Grade 8 bolt weakens the joint. Lock nuts, wing nuts, and castle nuts are NOT interchangeable with standard hex ✓ BROKER TIP Match nut to bolt thread class and material. Stainless bolt + zinc nut = galvanic corrosion. Always verify finish matches (plain, zinc, hot-dip galvanized) PARTSTABLE TECHNICAL DRAWING — NOT TO SCALE
VERIFIED SUBSTITUTES & CROSS-REFERENCES 2
2-5950Interchangeable
interchangeable cross-reference
interchangeable
2-5950-5Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is 259505?
259505 is a WEB,STRUCTURAL COMPONENT,AIRCRAF.
What parts can replace 259505?
There are 2 known substitutes for 259505: 2-5950, 2-5950-5. Substitute compatibility should be verified for your specific system.
What is the NSN for 259505?
259505 is cataloged in the Federal Logistics Information System (FLIS) under NSN 5310-00-343-4409. 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: August 2026