PartsTable
Technical Data Sheet
PartsTable / COMPONENT / 90185-10027-00
90185-10027-00 ✓ 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

NUT,SELF-LOCKING,ASSEMBLED WASHE. Key specifications include material: STEEL OVERALL, nut_style: FLAT, nut_height: 0.156 INCHES NOMINAL IN, thread_class: 2B, thread_series: UNIFIED NATIONAL COARSE (UNC), overall_height: 0.188 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 5310-00-167-5224, 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
90185-10027-00
NSN: 5310-00-167-5224
FSC: 5310
CAGE: 10695 — TAYLOR-DUNN CORPORATION DBA METRO CROWN INTERNATIONAL (USA)
SPECIFICATIONS
materialSTEEL OVERALL
nut_styleFLAT
nut_height0.156 INCHES NOMINAL IN
thread_class2B
thread_seriesUNIFIED NATIONAL COARSE (UNC)
overall_height0.188 INCHES NOMINAL IN
locking_featurePREVAILING TORQUE ALL METAL DESIGN
thread_directionRIGHT-HAND
width_across_flats0.438 INCHES NOMINAL IN
nominal_thread_size0.190 INCHES IN
washer_outside_diameter0.562 INCHES NOMINAL IN
thread_quantity_per_inch24
NSN5310-00-167-5224
COMPONENT DIAGRAM
NUT & WASHER — GRADE MATCHING REQUIRED Hex NUT CROSS-SECTION WASHER OD: — SIZE: — MATERIAL: — PN: 90185-10027-00 · 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
•
NOMINAL THREAD SIZE: 0.190 INCHES IN
•
THREAD QUANTITY PER INCH: 24
•
THREAD SERIES: UNIFIED NATIONAL COARSE (UNC)
•
WIDTH ACROSS FLATS: 0.438 INCHES NOMINAL IN
•
WASHER OUTSIDE DIAMETER: 0.562 INCHES NOMINAL IN
•
THREAD CLASS: 2B
•
NUT HEIGHT: 0.156 INCHES NOMINAL IN
•
THREAD DIRECTION: RIGHT-HAND
TECHNICAL CHARACTERISTICS (FLIS)
NOMINAL THREAD SIZE0.190 INCHES IN
THREAD QUANTITY PER INCH24
THREAD SERIESUNIFIED NATIONAL COARSE (UNC)
WIDTH ACROSS FLATS0.438 INCHES NOMINAL IN
WASHER OUTSIDE DIAMETER0.562 INCHES NOMINAL IN
THREAD CLASS2B
NUT HEIGHT0.156 INCHES NOMINAL IN
THREAD DIRECTIONRIGHT-HAND
NUT STYLEFLAT
OVERALL HEIGHT0.188 INCHES NOMINAL IN
VERIFIED SUBSTITUTES & CROSS-REFERENCES 13
SM-C-2001898Interchangeable
interchangeable cross-reference
interchangeable
SM-C-280547Interchangeable
interchangeable cross-reference
interchangeable
SM-C-199651Interchangeable
interchangeable cross-reference
interchangeable
4251-1Interchangeable
interchangeable cross-reference
interchangeable
SM-A-544894Interchangeable
interchangeable cross-reference
interchangeable
651377-7Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is 90185-10027-00?
90185-10027-00 is a NUT,SELF-LOCKING,ASSEMBLED WASHE.
What parts can replace 90185-10027-00?
There are 13 known substitutes for 90185-10027-00: SM-C-2001898, SM-C-280547, SM-C-199651 and 10 more. Substitute compatibility should be verified for your specific system.
What is the NSN for 90185-10027-00?
90185-10027-00 is cataloged in the Federal Logistics Information System (FLIS) under NSN 5310-00-167-5224. 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