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PartsTable / COMPONENT / 8989108
8989108 ✓ 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,ROUND is a the manufacturer industrial component. Key specifications include material: STEEL OVERALL, nut_style: ROUND, nut_diameter: 2.188 INCHES NOMINAL IN, thread_class: 2B, nut_thickness: 0.188 INCHES NOMINAL IN, thread_series: UN. This product is currently in active production with full OEM support.

This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 5310-00-788-7213, 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
8989108
NSN: 5310-00-788-7213
FSC: 5310
CAGE: 18876 — US ARMY AVIATION AND MISSILE COMMAND (USA)
SPECIFICATIONS
materialSTEEL OVERALL
nut_styleROUND
nut_diameter2.188 INCHES NOMINAL IN
thread_class2B
nut_thickness0.188 INCHES NOMINAL IN
thread_seriesUN
thread_directionRIGHT-HAND
drive_point_depth0.062 INCHES NOMINAL IN
drive_point_width0.281 INCHES NOMINAL IN
nominal_thread_size1.750 INCHES IN
drive_point_quantity6
thread_quantity_per_inch12
NSN5310-00-788-7213
COMPONENT DIAGRAM
NUT & WASHER — GRADE MATCHING REQUIRED Hex NUT CROSS-SECTION WASHER OD: — SIZE: — MATERIAL: — PN: 8989108 · 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: STEEL OVERALL
•
NOMINAL THREAD SIZE: 1.750 INCHES IN
•
THREAD SERIES: UN
•
THREAD QUANTITY PER INCH: 12
•
DRIVE POINT WIDTH: 0.281 INCHES NOMINAL IN
•
NUT STYLE: ROUND
•
DRIVE POINT QUANTITY: 6
•
NUT DIAMETER: 2.188 INCHES NOMINAL IN
TECHNICAL CHARACTERISTICS (FLIS)
MATERIALSTEEL OVERALL
NOMINAL THREAD SIZE1.750 INCHES IN
THREAD SERIESUN
THREAD QUANTITY PER INCH12
DRIVE POINT WIDTH0.281 INCHES NOMINAL IN
NUT STYLEROUND
DRIVE POINT QUANTITY6
NUT DIAMETER2.188 INCHES NOMINAL IN
THREAD DIRECTIONRIGHT-HAND
NUT THICKNESS0.188 INCHES NOMINAL IN
VERIFIED SUBSTITUTES & CROSS-REFERENCES 3
145Interchangeable
interchangeable cross-reference
interchangeable
BL150Interchangeable
interchangeable cross-reference
interchangeable
84001066-026Interchangeable
Same NIIN cross-reference
interchangeable
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is 8989108?
8989108 is a NUT,PLAIN,ROUND.
What parts can replace 8989108?
There are 3 known substitutes for 8989108: 145, BL150, 84001066-026. Substitute compatibility should be verified for your specific system.
What is the NSN for 8989108?
8989108 is cataloged in the Federal Logistics Information System (FLIS) under NSN 5310-00-788-7213. 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