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PartsTable / COMPONENT / 8330900
8330900 ✓ 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,PLAIN,EXTENDED WASHER,HEXAGO. Key specifications include material: COPPER ALLOY OVERALL, nut_style: HEXAGON, thread_class: 2B, thread_series: UNF, overall_height: 0.719 INCHES NOMINAL 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 5310-00-333-7539, 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
8330900
NSN: 5310-00-333-7539
FSC: 5310
CAGE: 19207 — U S ARMY TANK AUTOMOTIVE COMMAND AMSTA-IM-MM (USA)
SPECIFICATIONS
materialCOPPER ALLOY OVERALL
nut_styleHEXAGON
thread_class2B
thread_seriesUNF
overall_height0.719 INCHES NOMINAL IN
thread_directionRIGHT-HAND
washer_thickness0.219 INCHES NOMINAL IN
width_across_flats0.875 INCHES NOMINAL IN
nominal_thread_size0.625 INCHES IN
counterbore_diameter0.641 INCHES NOMINAL NUT IN
nut_counterbore_depth0.125 INCHES NOMINAL NUT IN
washer_outside_diameter3.125 INCHES NOMINAL IN
NSN5310-00-333-7539
COMPONENT DIAGRAM
NUT & WASHER — GRADE MATCHING REQUIRED Hex NUT CROSS-SECTION WASHER OD: — SIZE: — MATERIAL: — PN: 8330900 · 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
•
THREAD SERIES: UNF
•
MATERIAL: COPPER ALLOY OVERALL
•
NUT STYLE: HEXAGON
•
NUT COUNTERBORE DEPTH: 0.125 INCHES NOMINAL NUT IN
•
COUNTERBORE DIAMETER: 0.641 INCHES NOMINAL NUT IN
•
NOMINAL THREAD SIZE: 0.625 INCHES IN
•
WASHER OUTSIDE DIAMETER: 3.125 INCHES NOMINAL IN
•
THREAD QUANTITY PER INCH: 18
TECHNICAL CHARACTERISTICS (FLIS)
THREAD SERIESUNF
MATERIALCOPPER ALLOY OVERALL
NUT STYLEHEXAGON
NUT COUNTERBORE DEPTH0.125 INCHES NOMINAL NUT IN
COUNTERBORE DIAMETER0.641 INCHES NOMINAL NUT IN
NOMINAL THREAD SIZE0.625 INCHES IN
WASHER OUTSIDE DIAMETER3.125 INCHES NOMINAL IN
THREAD QUANTITY PER INCH18
WIDTH ACROSS FLATS0.875 INCHES NOMINAL IN
WASHER THICKNESS0.219 INCHES NOMINAL IN
VERIFIED SUBSTITUTES & CROSS-REFERENCES 9
P40-3Interchangeable
interchangeable cross-reference
interchangeable
MS17795-54Interchangeable
interchangeable cross-reference
interchangeable
CS502BB0375Interchangeable
interchangeable cross-reference
interchangeable
CW108MInterchangeable
interchangeable cross-reference
interchangeable
PMX-123NInterchangeable
interchangeable cross-reference
interchangeable
166 2394Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is 8330900?
8330900 is a NUT,PLAIN,EXTENDED WASHER,HEXAGO.
What parts can replace 8330900?
There are 9 known substitutes for 8330900: P40-3, MS17795-54, CS502BB0375 and 6 more. Substitute compatibility should be verified for your specific system.
What is the NSN for 8330900?
8330900 is cataloged in the Federal Logistics Information System (FLIS) under NSN 5310-00-333-7539. 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