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WA402815 — WASHER,FLAT

✓ Government record, cited
— · NUT WASHER
PRODUCT OVERVIEW

WA402815: WASHER,FLAT.

The WASHER,FLAT is a the manufacturer industrial component. Key specifications include material: STEEL OVERALL, thickness: 0.020 INCHES NOMINAL IN, overall_diameter: 13.9 MILLIMETERS MINIMUM AND 14.0 MILLIMETERS MAXIMUM MM, peripheral_shape_style: ROUND, center_hole_shape_style: ROUND, cross-sectional_shape_style: RECTANGULAR. This part is cataloged in the U.S.

Government catalog under NSN 5310-00-262-4770, 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
WA402815
NSN: 5310-00-262-4770
FSC: 5310 — Nuts and Washers
CAGE: 01843 — AMBAC INTERNATIONAL CORPORATION DIV AMBAC INTERNATIONAL (USA)
SPECIFICATIONS
materialSTEEL OVERALL
thickness0.020 INCHES NOMINAL IN
overall_diameter13.9 MILLIMETERS MINIMUM AND 14.0 MILLIMETERS MAXIMUM MM
peripheral_shape_styleROUND
center_hole_shape_styleROUND
cross-sectional_shape_styleRECTANGULAR
NSN5310-00-262-4770
COMPONENT DIAGRAM
NUT & WASHER — GRADE MATCHING REQUIRED Hex NUT CROSS-SECTION WASHER OD: — SIZE: — MATERIAL: — PN: WA402815 · 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
•
OVERALL DIAMETER: 13.9 MILLIMETERS MINIMUM AND 14.0 MILLIMETERS MAXIMUM MM
•
CROSS-SECTIONAL SHAPE STYLE: RECTANGULAR
•
PERIPHERAL SHAPE STYLE: ROUND
•
MATERIAL: STEEL OVERALL
•
CENTER HOLE SHAPE STYLE: ROUND
•
THICKNESS: 0.020 INCHES NOMINAL IN
TECHNICAL CHARACTERISTICS
OVERALL DIAMETER13.9 MILLIMETERS MINIMUM AND 14.0 MILLIMETERS MAXIMUM MM
CROSS-SECTIONAL SHAPE STYLERECTANGULAR
PERIPHERAL SHAPE STYLEROUND
MATERIALSTEEL OVERALL
CENTER HOLE SHAPE STYLEROUND
THICKNESS0.020 INCHES NOMINAL IN
SUBSTITUTES & CROSS-REFERENCES 2
WMS2157-3XReference document
Same NSN cross-reference
Reference document — Secondary reference
R-3580Reference document
Same NSN cross-reference
Reference document — Advisory reference — outside the item-of-supply concept
LIFECYCLE
NSN statusActive· U.S. Government catalog
Acquisition advice: Normally procured from the manufacturer (OEM)No demilitarization required
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FREQUENTLY ASKED QUESTIONS
What is WA402815?
WA402815 is a WASHER,FLAT.
What parts can replace WA402815?
There are 2 known substitutes for WA402815: WMS2157-3X, R-3580. Substitute compatibility should be verified for your specific system.
What is the NSN for WA402815?
WA402815 is cataloged in the U.S. Government catalog under NSN 5310-00-262-4770. This indicates validated use in U.S. government and defense supply chains.
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✓ PartsTable — the parts reference. Every fact cited to its source.
PartsTable Design LLC · partstable.com
U.S. Government catalog: edition PUBLOGDVD v12.0.0 (OCT 2026), edition date 2026-10-01, retrieved 2026-10-18.
PartsTable commercial catalog: edition Unified commercial catalog snapshot through 2026-09-28, edition date not on file, retrieved 2026-09-28.