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4M120D10 — WASHER,CONVEX

✓ Government record, cited
— · NUT WASHER
PRODUCT OVERVIEW

4M120D10: WASHER,CONVEX.

The WASHER,CONVEX is a the manufacturer industrial component. Key specifications include material: ALUMINUM ALLOY 2024 OVERALL, hole_diameter: 0.314 INCHES NOMINAL IN, outside_diameter: 0.478 INCHES NOMINAL IN, special_features: PART FOR THE A-10 STRUCRUAL REPAIRS, style_designator: CONVEX, surface_treatment: ANODIZE OVERALL. This part is cataloged in the U.S.

Government catalog under NSN 5310-01-619-6476, 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
4M120D10
NSN: 5310-01-619-6476
FSC: 5310 — Nuts and Washers
CAGE: 26512 — NORTHROP GRUMMAN SYSTEMS CORPORATION (USA)
SPECIFICATIONS
materialALUMINUM ALLOY 2024 OVERALL
hole_diameter0.314 INCHES NOMINAL IN
outside_diameter0.478 INCHES NOMINAL IN
special_featuresPART FOR THE A-10 STRUCRUAL REPAIRS
style_designatorCONVEX
surface_treatmentANODIZE OVERALL
material_thickness0.070 INCHES NOMINAL IN
end_item_identificationA-10 AIRCRAFT
material_document_and_classificationQQ-A-220 ASSN STD SINGLE MATERIAL RESPONSE OVERALL
NSN5310-01-619-6476
COMPONENT DIAGRAM
NUT & WASHER — GRADE MATCHING REQUIRED Hex NUT CROSS-SECTION WASHER OD: — SIZE: — MATERIAL: — PN: 4M120D10 · 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
•
MATERIAL DOCUMENT AND CLASSIFICATION: QQ-A-220 ASSN STD SINGLE MATERIAL RESPONSE OVERALL
•
OUTSIDE DIAMETER: 0.478 INCHES NOMINAL IN
•
MATERIAL THICKNESS: 0.070 INCHES NOMINAL IN
•
SURFACE TREATMENT: ANODIZE OVERALL
•
MATERIAL: ALUMINUM ALLOY 2024 OVERALL
TECHNICAL CHARACTERISTICS
STYLE DESIGNATORCONVEX
MATERIAL DOCUMENT AND CLASSIFICATIONQQ-A-220 ASSN STD SINGLE MATERIAL RESPONSE OVERALL
OUTSIDE DIAMETER0.478 INCHES NOMINAL IN
MATERIAL THICKNESS0.070 INCHES NOMINAL IN
SPECIAL FEATURESPART FOR THE A-10 STRUCRUAL REPAIRS
SURFACE TREATMENTANODIZE OVERALL
END ITEM IDENTIFICATIONA-10 AIRCRAFT
MATERIALALUMINUM ALLOY 2024 OVERALL
HOLE DIAMETER0.314 INCHES NOMINAL IN
OTHER ITEMS IN FSC 5310 — Nuts and Washers
Items in the same Federal Supply class. No interchangeability or substitution relationship is implied.
5310-00-000-0040 5310-00-000-0077 5310-00-000-0079 5310-00-000-1146 5310-00-000-3815 5310-00-000-4532 5310-00-000-4540
SUBSTITUTES & CROSS-REFERENCES

No substitute or cross-reference records for this part.

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 4M120D10?
4M120D10 is a WASHER,CONVEX.
What is the NSN for 4M120D10?
4M120D10 is cataloged in the U.S. Government catalog under NSN 5310-01-619-6476. 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.