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PartsTable / COMPONENT / 8490076
8490076 ✓ 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 1008 OVERALL, thickness: 0.060 INCHES NOMINAL IN, hole_diameter: 0.520 INCHES MINIMUM AND 0.523 INCHES MAXIMUM IN, hardness_rating: 50.0 ROCKWELL B MINIMUM, overall_diameter: 1.160 INCHES MINIMUM AND 1.165 INCHES MAXIMUM IN, surface_treatment: ZINC OVERALL. This product is currently in active production with full OEM support.

This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 5310-00-584-5004, 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
8490076
NSN: 5310-00-584-5004
FSC: 5310
CAGE: 18876 — US ARMY AVIATION AND MISSILE COMMAND (USA)
SPECIFICATIONS
materialSTEEL COMP 1008 OVERALL
thickness0.060 INCHES NOMINAL IN
hole_diameter0.520 INCHES MINIMUM AND 0.523 INCHES MAXIMUM IN
hardness_rating50.0 ROCKWELL B MINIMUM
overall_diameter1.160 INCHES MINIMUM AND 1.165 INCHES MAXIMUM IN
surface_treatmentZINC OVERALL
peripheral_shape_styleROUND
center_hole_shape_styleROUND
cross-sectional_shape_styleRECTANGULAR
material_document_and_classificationSAE ASSN STD SINGLE MATERIAL RESPONSE OVERALL
NSN5310-00-584-5004
COMPONENT DIAGRAM
NUT & WASHER — GRADE MATCHING REQUIRED Hex NUT CROSS-SECTION WASHER OD: — SIZE: — MATERIAL: — PN: 8490076 · 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
•
HOLE DIAMETER: 0.520 INCHES MINIMUM AND 0.523 INCHES MAXIMUM IN
•
CENTER HOLE SHAPE STYLE: ROUND
•
OVERALL DIAMETER: 1.160 INCHES MINIMUM AND 1.165 INCHES MAXIMUM IN
•
THICKNESS: 0.060 INCHES NOMINAL IN
•
SURFACE TREATMENT: ZINC OVERALL
•
MATERIAL DOCUMENT AND CLASSIFICATION: SAE ASSN STD SINGLE MATERIAL RESPONSE OVERALL
•
MATERIAL: STEEL COMP 1008 OVERALL
•
HARDNESS RATING: 50.0 ROCKWELL B MINIMUM
TECHNICAL CHARACTERISTICS (FLIS)
HOLE DIAMETER0.520 INCHES MINIMUM AND 0.523 INCHES MAXIMUM IN
CENTER HOLE SHAPE STYLEROUND
OVERALL DIAMETER1.160 INCHES MINIMUM AND 1.165 INCHES MAXIMUM IN
THICKNESS0.060 INCHES NOMINAL IN
SURFACE TREATMENTZINC OVERALL
MATERIAL DOCUMENT AND CLASSIFICATIONSAE ASSN STD SINGLE MATERIAL RESPONSE OVERALL
MATERIALSTEEL COMP 1008 OVERALL
HARDNESS RATING50.0 ROCKWELL B MINIMUM
CROSS-SECTIONAL SHAPE STYLERECTANGULAR
PERIPHERAL SHAPE STYLEROUND
VERIFIED SUBSTITUTES & CROSS-REFERENCES 10
48290Interchangeable
interchangeable cross-reference
interchangeable
108X187Interchangeable
interchangeable cross-reference
interchangeable
2018584Interchangeable
interchangeable cross-reference
interchangeable
152685Interchangeable
interchangeable cross-reference
interchangeable
97623Interchangeable
interchangeable cross-reference
interchangeable
48290-20629Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is 8490076?
8490076 is a WASHER,FLAT.
What parts can replace 8490076?
There are 10 known substitutes for 8490076: 48290, 108X187, 2018584 and 7 more. Substitute compatibility should be verified for your specific system.
What is the NSN for 8490076?
8490076 is cataloged in the Federal Logistics Information System (FLIS) under NSN 5310-00-584-5004. 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