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PartsTable / COMPONENT / LYC505-08
LYC505-08 ✓ 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

The NUT,PLAIN,HEXAGON is a the manufacturer industrial component. Key specifications include material: STEEL OVERALL, nut_style: HEXAGON, nut_height: 0.125 INCHES NOMINAL IN, thread_class: 3B, thread_series: UNIFIED NATIONAL COARSE (UNC), thread_direction: RIGHT-HAND. This product is currently in active production with full OEM support.

This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 5310-00-208-3746, 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
LYC505-08
NSN: 5310-00-208-3746
FSC: 5310
CAGE: 99193 — HONEYWELL INTERNATIONAL INC. DBA HONEYWELL INTERNATIONAL DIV AEROSPACE - PHOENIX (USA)
SPECIFICATIONS
materialSTEEL OVERALL
nut_styleHEXAGON
nut_height0.125 INCHES NOMINAL IN
thread_class3B
thread_seriesUNIFIED NATIONAL COARSE (UNC)
thread_directionRIGHT-HAND
surface_treatmentCADMIUM OVERALL
width_across_flats0.344 INCHES NOMINAL IN
nominal_thread_size0.164 INCHES IN
bearing_surface_typeCHAMFERED
thread_quantity_per_inch32
NSN5310-00-208-3746
COMPONENT DIAGRAM
NUT & WASHER — GRADE MATCHING REQUIRED Hex NUT CROSS-SECTION WASHER OD: — SIZE: — MATERIAL: — PN: LYC505-08 · 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
KEY FEATURES
•
NUT HEIGHT: 0.125 INCHES NOMINAL IN
•
THREAD QUANTITY PER INCH: 32
•
BEARING SURFACE TYPE: CHAMFERED
•
NOMINAL THREAD SIZE: 0.164 INCHES IN
•
THREAD SERIES: UNIFIED NATIONAL COARSE (UNC)
•
NUT STYLE: HEXAGON
•
THREAD CLASS: 3B
•
WIDTH ACROSS FLATS: 0.344 INCHES NOMINAL IN
TECHNICAL CHARACTERISTICS (FLIS)
NUT HEIGHT0.125 INCHES NOMINAL IN
THREAD QUANTITY PER INCH32
BEARING SURFACE TYPECHAMFERED
NOMINAL THREAD SIZE0.164 INCHES IN
THREAD SERIESUNIFIED NATIONAL COARSE (UNC)
NUT STYLEHEXAGON
THREAD CLASS3B
WIDTH ACROSS FLATS0.344 INCHES NOMINAL IN
THREAD DIRECTIONRIGHT-HAND
MATERIALSTEEL OVERALL
VERIFIED SUBSTITUTES & CROSS-REFERENCES 17
1025FX1Interchangeable
interchangeable cross-reference
interchangeable
440592Interchangeable
interchangeable cross-reference
interchangeable
5D470Interchangeable
interchangeable cross-reference
interchangeable
ER63686AInterchangeable
interchangeable cross-reference
interchangeable
30056Interchangeable
interchangeable cross-reference
interchangeable
T1016BInterchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is LYC505-08?
LYC505-08 is a NUT,PLAIN,HEXAGON.
What parts can replace LYC505-08?
There are 17 known substitutes for LYC505-08: 1025FX1, 440592, 5D470 and 14 more. Substitute compatibility should be verified for your specific system.
What is the NSN for LYC505-08?
LYC505-08 is cataloged in the Federal Logistics Information System (FLIS) under NSN 5310-00-208-3746. 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