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13506405 — WASHER,CONVEX

✓ Government record, cited
— · NUT WASHER
PRODUCT OVERVIEW

13506405: WASHER,CONVEX.

The WASHER,CONVEX is a the manufacturer industrial component. Key specifications include material: STEEL OVERALL, hole_diameter: 20.4 MILLIMETERS NOMINAL MM, outside_diameter: 37.0 MILLIMETERS NOMINAL MM, special_features: CASE HARDENED, style_designator: CONVEX, features_provided: CASEHARDENED. This part is cataloged in the U.S.

Government catalog under NSN 5310-01-535-3152, 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
13506405
NSN: 5310-01-535-3152
NIINs: 015353152, 016483778, 017303804
FSC: 5310 — Nuts and Washers
CAGE: 64059 — LOCKHEED MARTIN CORPORATION (USA)
SPECIFICATIONS
materialSTEEL OVERALL
hole_diameter20.4 MILLIMETERS NOMINAL MM
outside_diameter37.0 MILLIMETERS NOMINAL MM
special_featuresCASE HARDENED
style_designatorCONVEX
features_providedCASEHARDENED
material_thickness6.3 MILLIMETERS NOMINAL MM
end_item_identification1427-01-532-0256
part_name_assigned_by_controlling_agencyTIE DOWN CONVEX WASHER
NSN5310-01-535-3152
COMPONENT DIAGRAM
NUT & WASHER — GRADE MATCHING REQUIRED Hex NUT CROSS-SECTION WASHER OD: — SIZE: — MATERIAL: — PN: 13506405 · 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
•
STYLE DESIGNATOR: CONVEX
•
OUTSIDE DIAMETER: 37.0 MILLIMETERS NOMINAL MM
•
FEATURES PROVIDED: CASEHARDENED
•
MATERIAL THICKNESS: 6.3 MILLIMETERS NOMINAL MM
•
MATERIAL: STEEL OVERALL
TECHNICAL CHARACTERISTICS
STYLE DESIGNATORCONVEX
OUTSIDE DIAMETER37.0 MILLIMETERS NOMINAL MM
FEATURES PROVIDEDCASEHARDENED
MATERIAL THICKNESS6.3 MILLIMETERS NOMINAL MM
SPECIAL FEATURESCASE HARDENED
PART NAME ASSIGNED BY CONTROLLING AGENCYTIE DOWN CONVEX WASHER
END ITEM IDENTIFICATION1427-01-532-0256
MATERIALSTEEL OVERALL
HOLE DIAMETER20.4 MILLIMETERS NOMINAL MM
SUBSTITUTES & CROSS-REFERENCES 1
5310PL2069201Reference document
Same NSN cross-reference
Reference document — Informative reference only
LIFECYCLE
NSN statusActive· U.S. Government catalog
Acquisition advice: Insurance item — stocked against contingency demandNo demilitarization required
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FREQUENTLY ASKED QUESTIONS
What is 13506405?
13506405 is a WASHER,CONVEX.
What parts can replace 13506405?
There is 1 known substitute for 13506405: 5310PL2069201. Substitute compatibility should be verified for your specific system.
What is the NSN for 13506405?
13506405 is cataloged in the U.S. Government catalog under NSN 5310-01-535-3152. 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.