PartsTable
Technical Data Sheet
90313A206 ✓ 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, hole_diameter: 0.328 INCHES NOMINAL IN, overall_diameter: 0.625 INCHES NOMINAL IN, peripheral_shape_style: ROUND, supplementary_features: ITEM THICKNESS MIN-MAX 0.056 TO 0.070 INCH IN, 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 5310-01-559-7229, 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
90313A206
NSN: 5310-01-559-7229
FSC: 5310
CAGE: 39428 — MCMASTER-CARR SUPPLY CO (USA)
SPECIFICATIONS
materialSTEEL CORROSION RESISTING OVERALL
hole_diameter0.328 INCHES NOMINAL IN
overall_diameter0.625 INCHES NOMINAL IN
special_featuresSCREW SIZE 0.312; SPECIAL SIZE WASHER WITH EXTRA-WIDE BEARING SURFACE TO ELIMINATE THE NEED FOR PATCHING HOLES; NOT RATED FOR ROCKWELL HARDNESS
peripheral_shape_styleROUND
supplementary_featuresITEM THICKNESS MIN-MAX 0.056 TO 0.070 INCH IN
center_hole_shape_styleROUND
end_item_identificationAN/AQS-24A CONTAINERS, SHIPPING AND STORAGE A
part_name_assigned_by_controlling_agencyLARGE OD; FENDER/PLASTER WASHER
NSN5310-01-559-7229
COMPONENT DIAGRAM
NUT & WASHER — GRADE MATCHING REQUIRED Hex NUT CROSS-SECTION WASHER OD: — SIZE: — MATERIAL: — PN: 90313A206 · 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
CENTER HOLE SHAPE STYLE: ROUND
OVERALL DIAMETER: 0.625 INCHES NOMINAL IN
SUPPLEMENTARY FEATURES: ITEM THICKNESS MIN-MAX 0.056 TO 0.070 INCH IN
HOLE DIAMETER: 0.328 INCHES NOMINAL IN
MATERIAL: STEEL CORROSION RESISTING OVERALL
PERIPHERAL SHAPE STYLE: ROUND
TECHNICAL CHARACTERISTICS (FLIS)
CENTER HOLE SHAPE STYLEROUND
OVERALL DIAMETER0.625 INCHES NOMINAL IN
SUPPLEMENTARY FEATURESITEM THICKNESS MIN-MAX 0.056 TO 0.070 INCH IN
HOLE DIAMETER0.328 INCHES NOMINAL IN
MATERIALSTEEL CORROSION RESISTING OVERALL
END ITEM IDENTIFICATIONAN/AQS-24A CONTAINERS, SHIPPING AND STORAGE A
PART NAME ASSIGNED BY CONTROLLING AGENCYLARGE OD; FENDER/PLASTER WASHER
PERIPHERAL SHAPE STYLEROUND
SPECIAL FEATURESSCREW SIZE 0.312; SPECIAL SIZE WASHER WITH EXTRA-WIDE BEARING SURFACE TO ELIMINATE THE NEED FOR PATCHING HOLES; NOT RATED FOR ROCKWELL HARDNESS
VERIFIED SUBSTITUTES & CROSS-REFERENCES 2
144222Interchangeable
interchangeable cross-reference
interchangeable
90313A206Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is 90313A206?
90313A206 is a WASHER,FLAT.
What parts can replace 90313A206?
There are 2 known substitutes for 90313A206: 144222, 90313A206. Substitute compatibility should be verified for your specific system.
What is the NSN for 90313A206?
90313A206 is cataloged in the Federal Logistics Information System (FLIS) under NSN 5310-01-559-7229. This indicates validated use in U.S. government and defense supply chains.
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