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857558 ✓ 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: CELLULOSE OVERALL, thickness: 0.125 INCHES NOMINAL IN, hole_diameter: 0.266 INCHES NOMINAL IN, overall_diameter: 0.750 INCHES NOMINAL IN, 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 5310-00-424-3243, 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
857558
NSN: 5310-00-424-3243
FSC: 5310
CAGE: 12603 — CLARK EQUIPMENT CO (USA)
SPECIFICATIONS
materialCELLULOSE OVERALL
thickness0.125 INCHES NOMINAL IN
hole_diameter0.266 INCHES NOMINAL IN
overall_diameter0.750 INCHES NOMINAL IN
peripheral_shape_styleROUND
center_hole_shape_styleROUND
cross-sectional_shape_styleRECTANGULAR
NSN5310-00-424-3243
COMPONENT DIAGRAM
NUT & WASHER — GRADE MATCHING REQUIRED Hex NUT CROSS-SECTION WASHER OD: — SIZE: — MATERIAL: — PN: 857558 · 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
•
PERIPHERAL SHAPE STYLE: ROUND
•
HOLE DIAMETER: 0.266 INCHES NOMINAL IN
•
CROSS-SECTIONAL SHAPE STYLE: RECTANGULAR
•
THICKNESS: 0.125 INCHES NOMINAL IN
•
OVERALL DIAMETER: 0.750 INCHES NOMINAL IN
•
CENTER HOLE SHAPE STYLE: ROUND
•
MATERIAL: CELLULOSE OVERALL
TECHNICAL CHARACTERISTICS (FLIS)
PERIPHERAL SHAPE STYLEROUND
HOLE DIAMETER0.266 INCHES NOMINAL IN
CROSS-SECTIONAL SHAPE STYLERECTANGULAR
THICKNESS0.125 INCHES NOMINAL IN
OVERALL DIAMETER0.750 INCHES NOMINAL IN
CENTER HOLE SHAPE STYLEROUND
MATERIALCELLULOSE OVERALL
VERIFIED SUBSTITUTES & CROSS-REFERENCES 15
21834Interchangeable
interchangeable cross-reference
interchangeable
X117C10Interchangeable
interchangeable cross-reference
interchangeable
8-3489Interchangeable
interchangeable cross-reference
interchangeable
218314Interchangeable
interchangeable cross-reference
interchangeable
947030B PART 21Interchangeable
interchangeable cross-reference
interchangeable
21834 FIND 14Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is 857558?
857558 is a WASHER,FLAT.
What parts can replace 857558?
There are 15 known substitutes for 857558: 21834, X117C10, 8-3489 and 12 more. Substitute compatibility should be verified for your specific system.
What is the NSN for 857558?
857558 is cataloged in the Federal Logistics Information System (FLIS) under NSN 5310-00-424-3243. 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