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2856584 ✓ 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: 0.018 INCHES MINIMUM AND 0.022 INCHES MAXIMUM IN, hole_diameter: 0.380 INCHES MINIMUM AND 0.390 INCHES MAXIMUM IN, overall_diameter: 2.160 INCHES MINIMUM AND 2.180 INCHES MAXIMUM IN, surface_treatment: PASSIVATE OVERALL, peripheral_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 5310-00-469-3828, 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
2856584
NSN: 5310-00-469-3828
FSC: 5310
CAGE: 10001 — NAVAIR AND NAVSEA MANAGED ORIGINAL DESIGN ACTIVITY DWG NOT MATERIAL/PARTS SUPPLIER (USA)
SPECIFICATIONS
materialSTEEL CORROSION RESISTING OVERALL
thickness0.018 INCHES MINIMUM AND 0.022 INCHES MAXIMUM IN
hole_diameter0.380 INCHES MINIMUM AND 0.390 INCHES MAXIMUM IN
overall_diameter2.160 INCHES MINIMUM AND 2.180 INCHES MAXIMUM IN
surface_treatmentPASSIVATE OVERALL
peripheral_shape_styleROUND
center_hole_shape_styleROUND
cross-sectional_shape_styleRECTANGULAR
material_document_and_classificationQQ-S-766 FED SPEC SINGLE MATERIAL RESPONSE OVERALL
part_name_assigned_by_controlling_agencyNAVY SPECIAL PROJECT
surface_treatment_document_and_classificationMIL-F-14072 FINISH E300 MIL SPEC SINGLE TREATMENT RESPONSE OVERALL
NSN5310-00-469-3828
COMPONENT DIAGRAM
NUT & WASHER — GRADE MATCHING REQUIRED Hex NUT CROSS-SECTION WASHER OD: — SIZE: — MATERIAL: — PN: 2856584 · 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
•
SURFACE TREATMENT DOCUMENT AND CLASSIFICATION: MIL-F-14072 FINISH E300 MIL SPEC SINGLE TREATMENT RESPONSE OVERALL
•
THICKNESS: 0.018 INCHES MINIMUM AND 0.022 INCHES MAXIMUM IN
•
OVERALL DIAMETER: 2.160 INCHES MINIMUM AND 2.180 INCHES MAXIMUM IN
•
CENTER HOLE SHAPE STYLE: ROUND
•
PERIPHERAL SHAPE STYLE: ROUND
•
HOLE DIAMETER: 0.380 INCHES MINIMUM AND 0.390 INCHES MAXIMUM IN
•
CROSS-SECTIONAL SHAPE STYLE: RECTANGULAR
TECHNICAL CHARACTERISTICS (FLIS)
SURFACE TREATMENT DOCUMENT AND CLASSIFICATIONMIL-F-14072 FINISH E300 MIL SPEC SINGLE TREATMENT RESPONSE OVERALL
THICKNESS0.018 INCHES MINIMUM AND 0.022 INCHES MAXIMUM IN
OVERALL DIAMETER2.160 INCHES MINIMUM AND 2.180 INCHES MAXIMUM IN
CENTER HOLE SHAPE STYLEROUND
PART NAME ASSIGNED BY CONTROLLING AGENCYNAVY SPECIAL PROJECT
PERIPHERAL SHAPE STYLEROUND
HOLE DIAMETER0.380 INCHES MINIMUM AND 0.390 INCHES MAXIMUM IN
CROSS-SECTIONAL SHAPE STYLERECTANGULAR
MATERIAL DOCUMENT AND CLASSIFICATIONQQ-S-766 FED SPEC SINGLE MATERIAL RESPONSE OVERALL
MATERIALSTEEL CORROSION RESISTING OVERALL
VERIFIED SUBSTITUTES & CROSS-REFERENCES 4
00927EInterchangeable
interchangeable cross-reference
interchangeable
00927Interchangeable
interchangeable cross-reference
interchangeable
C726S820WH-6BInterchangeable
interchangeable cross-reference
interchangeable
NGC875CAR-0N9S020Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is 2856584?
2856584 is a WASHER,FLAT.
What parts can replace 2856584?
There are 4 known substitutes for 2856584: 00927E, 00927, C726S820WH-6B and 1 more. Substitute compatibility should be verified for your specific system.
What is the NSN for 2856584?
2856584 is cataloged in the Federal Logistics Information System (FLIS) under NSN 5310-00-469-3828. 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