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PartsTable / COMPONENT / 90-114-8S
90-114-8S ✓ 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,EXTENDED WASHER. Key specifications include material: UNABLE TO DECODE, nut_style: HEXAGON, thread_class: 3B, thread_series: UNIFIED NATIONAL JOINT FINE (UNJF), overall_height: 0.235 INCHES MINIMUM AND 0.265 INCHES MAXIMUM IN, 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 5310-01-729-6474, 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
90-114-8S
NSN: 5310-01-729-6474
FSC: 5310
CAGE: 97499 — BELL TEXTRON INC (USA)
SPECIFICATIONS
materialUNABLE TO DECODE
nut_styleHEXAGON
thread_class3B
thread_seriesUNIFIED NATIONAL JOINT FINE (UNJF)
overall_height0.235 INCHES MINIMUM AND 0.265 INCHES MAXIMUM IN
thread_directionRIGHT-HAND
washer_thickness0.030 INCHES NOMINAL IN
surface_treatmentUNABLE TO DECODE
width_across_flats0.554 INCHES MINIMUM AND 0.566 INCHES MAXIMUM IN
nominal_thread_size0.5000 INCHES IN
end_item_identificationV-22
washer_outside_diameter0.770 INCHES NOMINAL IN
NSN5310-01-729-6474
COMPONENT DIAGRAM
NUT & WASHER — GRADE MATCHING REQUIRED Hex NUT CROSS-SECTION WASHER OD: — SIZE: — MATERIAL: — PN: 90-114-8S · 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
•
MATERIAL: UNABLE TO DECODE
•
WASHER THICKNESS: 0.030 INCHES NOMINAL IN
•
SURFACE TREATMENT DOCUMENT AND CLASSIFICATION: UNABLE TO DECODE
•
THREAD SERIES: UNIFIED NATIONAL JOINT FINE (UNJF)
•
WASHER OUTSIDE DIAMETER: 0.770 INCHES NOMINAL IN
•
NOMINAL THREAD SIZE: 0.5000 INCHES IN
•
WIDTH ACROSS FLATS: 0.554 INCHES MINIMUM AND 0.566 INCHES MAXIMUM IN
•
THREAD DIRECTION: RIGHT-HAND
TECHNICAL CHARACTERISTICS (FLIS)
MATERIALUNABLE TO DECODE
WASHER THICKNESS0.030 INCHES NOMINAL IN
SURFACE TREATMENT DOCUMENT AND CLASSIFICATIONUNABLE TO DECODE
THREAD SERIESUNIFIED NATIONAL JOINT FINE (UNJF)
WASHER OUTSIDE DIAMETER0.770 INCHES NOMINAL IN
NOMINAL THREAD SIZE0.5000 INCHES IN
WIDTH ACROSS FLATS0.554 INCHES MINIMUM AND 0.566 INCHES MAXIMUM IN
THREAD DIRECTIONRIGHT-HAND
OVERALL HEIGHT0.235 INCHES MINIMUM AND 0.265 INCHES MAXIMUM IN
THREAD QUANTITY PER INCH20
VERIFIED SUBSTITUTES & CROSS-REFERENCES 8
B94.2Interchangeable
interchangeable cross-reference
interchangeable
901-1-4Interchangeable
interchangeable cross-reference
interchangeable
50-10957Interchangeable
interchangeable cross-reference
interchangeable
901-14CPInterchangeable
interchangeable cross-reference
interchangeable
5/16X1 3/4 18UN C-2A CU. SILICOInterchangeable
interchangeable cross-reference
interchangeable
4M430A2 PIECE 9Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is 90-114-8S?
90-114-8S is a NUT,SELF-LOCKING,EXTENDED WASHER.
What parts can replace 90-114-8S?
There are 8 known substitutes for 90-114-8S: B94.2, 901-1-4, 50-10957 and 5 more. Substitute compatibility should be verified for your specific system.
What is the NSN for 90-114-8S?
90-114-8S is cataloged in the Federal Logistics Information System (FLIS) under NSN 5310-01-729-6474. 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