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PartsTable / COMPONENT / 8M0204648
8M0204648 ✓ 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 COMP 302 OR STEEL COMP 304 OR STEEL COMP 8617H OVERALL, hole_diameter: 0.516 INCHES NOMINAL IN, overall_diameter: 1.50 INCHES NOMINAL IN, end_item_identification: VERADO 350 OUTBOARD, part_name_assigned_by_controlling_agency: WASHER, INNER. This product is currently in active production with full OEM support.

This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 5310-01-661-9471, 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
8M0204648
NSN: 5310-01-661-9471
FSC: 5310
CAGE: 88907 — BRUNSWICK CORP DBA MERCURY MARINE DIV MERCURY MARINE (USA)
SPECIFICATIONS
materialSTEEL COMP 302 OR STEEL COMP 304 OR STEEL COMP 8617H OVERALL
hole_diameter0.516 INCHES NOMINAL IN
overall_diameter1.50 INCHES NOMINAL IN
end_item_identificationVERADO 350 OUTBOARD
part_name_assigned_by_controlling_agencyWASHER, INNER
NSN5310-01-661-9471
COMPONENT DIAGRAM
NUT & WASHER — GRADE MATCHING REQUIRED Hex NUT CROSS-SECTION WASHER OD: — SIZE: — MATERIAL: — PN: 8M0204648 · 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 COMP 302 OR STEEL COMP 304 OR STEEL COMP 8617H OVERALL
•
OVERALL DIAMETER: 1.50 INCHES NOMINAL IN
•
HOLE DIAMETER: 0.516 INCHES NOMINAL IN
TECHNICAL CHARACTERISTICS (FLIS)
MATERIALSTEEL COMP 302 OR STEEL COMP 304 OR STEEL COMP 8617H OVERALL
PART NAME ASSIGNED BY CONTROLLING AGENCYWASHER, INNER
END ITEM IDENTIFICATIONVERADO 350 OUTBOARD
OVERALL DIAMETER1.50 INCHES NOMINAL IN
HOLE DIAMETER0.516 INCHES NOMINAL IN
VERIFIED SUBSTITUTES & CROSS-REFERENCES 9
28674Interchangeable
interchangeable cross-reference
interchangeable
28421Interchangeable
interchangeable cross-reference
interchangeable
B-28421Interchangeable
interchangeable cross-reference
interchangeable
028 09378 000Interchangeable
interchangeable cross-reference
interchangeable
D50265 ITEM 30Interchangeable
interchangeable cross-reference
interchangeable
NK1648Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is 8M0204648?
8M0204648 is a WASHER,FLAT.
What parts can replace 8M0204648?
There are 9 known substitutes for 8M0204648: 28674, 28421, B-28421 and 6 more. Substitute compatibility should be verified for your specific system.
What is the NSN for 8M0204648?
8M0204648 is cataloged in the Federal Logistics Information System (FLIS) under NSN 5310-01-661-9471. 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