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Technical Data Sheet
PartsTable / COMPONENT / MW6420000A40000
MW6420000A40000 ✓ 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 WASHER,FLAT is a the manufacturer industrial component. Key specifications include material: STEEL CORROSION RESISTING OVERALL, thickness: 2.30 MILLIMETERS MINIMUM AND 2.70 MILLIMETERS MAXIMUM MM, hole_diameter: 13.00 MILLIMETERS MINIMUM AND 13.27 MILLIMETERS MAXIMUM MM, overall_diameter: 23.48 MILLIMETERS MINIMUM AND 24.00 MILLIMETERS MAXIMUM MM, peripheral_shape_style: ROUND, center_hole_shape_style: ROUND. This product is currently in active production with full OEM support.

This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 5310-01-569-0805, 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
MW6420000A40000
NSN: 5310-01-569-0805
FSC: 5310
CAGE: 00N77 — FASTENAL COMPANY (USA)
SPECIFICATIONS
materialSTEEL CORROSION RESISTING OVERALL
thickness2.30 MILLIMETERS MINIMUM AND 2.70 MILLIMETERS MAXIMUM MM
hole_diameter13.00 MILLIMETERS MINIMUM AND 13.27 MILLIMETERS MAXIMUM MM
overall_diameter23.48 MILLIMETERS MINIMUM AND 24.00 MILLIMETERS MAXIMUM MM
peripheral_shape_styleROUND
center_hole_shape_styleROUND
end_item_identification6625015601265
cross-sectional_shape_styleRECTANGULAR
part_name_assigned_by_controlling_agencyWASHER,FLAT
NSN5310-01-569-0805
COMPONENT DIAGRAM
NUT & WASHER — GRADE MATCHING REQUIRED Hex NUT CROSS-SECTION WASHER OD: — SIZE: — MATERIAL: — PN: MW6420000A40000 · 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
VERIFIED SUBSTITUTES & CROSS-REFERENCES 4
M1209Interchangeable
interchangeable cross-reference
interchangeable
M12 DIN125Interchangeable
interchangeable cross-reference
interchangeable
DIN 125A 12Interchangeable
interchangeable cross-reference
interchangeable
MW6420000A40000Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is MW6420000A40000?
MW6420000A40000 is a WASHER,FLAT.
What parts can replace MW6420000A40000?
There are 4 known substitutes for MW6420000A40000: M1209, M12 DIN125, DIN 125A 12 and 1 more. Substitute compatibility should be verified for your specific system.
What is the NSN for MW6420000A40000?
MW6420000A40000 is cataloged in the Federal Logistics Information System (FLIS) under NSN 5310-01-569-0805. 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