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369A1131 — WASHER,CONVEX

✓ Government record, cited
— · NUT WASHER
PRODUCT OVERVIEW

369A1131: WASHER,CONVEX.

The WASHER,CONVEX is a the manufacturer industrial component. Key specifications include material: ALUMINUM ALLOY 2024 OVERALL, hole_diameter: 0.250 INCHES MINIMUM AND 0.260 INCHES MAXIMUM IN, heat_treatment: F-AS FABRICATED, surface_finish: 63.0 MICROINCHES OUTER, outside_diameter: 0.480 INCHES MINIMUM AND 0.490 INCHES MAXIMUM IN, style_designator: CONVEX. This part is cataloged in the U.S.

Government catalog under NSN 5310-00-923-3634, 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
369A1131
NSN: 5310-00-923-3634
FSC: 5310 — Nuts and Washers
CAGE: 8V613 — THE BOEING COMPANY (USA)
SPECIFICATIONS
materialALUMINUM ALLOY 2024 OVERALL
hole_diameter0.250 INCHES MINIMUM AND 0.260 INCHES MAXIMUM IN
heat_treatmentF-AS FABRICATED
surface_finish63.0 MICROINCHES OUTER
outside_diameter0.480 INCHES MINIMUM AND 0.490 INCHES MAXIMUM IN
style_designatorCONVEX
surface_treatmentANODIZE OVERALL
material_thickness0.090 INCHES MINIMUM AND 0.110 INCHES MAXIMUM IN
material_document_and_classificationQQ-A-250/5 FED SPEC SINGLE MATERIAL RESPONSE OR QQ-A-225/6 FED SPEC SINGLE MATERIAL RESPONSE OVERALL
surface_treatment_document_and_classificationMIL-A-8625,TYPE 1 MIL SPEC SINGLE TREATMENT RESPONSE OVERALL
NSN5310-00-923-3634
COMPONENT DIAGRAM
NUT & WASHER — GRADE MATCHING REQUIRED Hex NUT CROSS-SECTION WASHER OD: — SIZE: — MATERIAL: — PN: 369A1131 · 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
•
SURFACE FINISH: 63.0 MICROINCHES BOTTOM
•
SURFACE TREATMENT DOCUMENT AND CLASSIFICATION: MIL-A-8625,TYPE 1 MIL SPEC SINGLE TREATMENT RESPONSE OVERALL
•
HEAT TREATMENT: F-AS FABRICATED
•
STYLE DESIGNATOR: CONVEX
•
MATERIAL DOCUMENT AND CLASSIFICATION: QQ-A-250/5 FED SPEC SINGLE MATERIAL RESPONSE OR QQ-A-225/6 FED SPEC SINGLE MATERIAL RESPONSE OVERALL
•
OUTSIDE DIAMETER: 0.480 INCHES MINIMUM AND 0.490 INCHES MAXIMUM IN
TECHNICAL CHARACTERISTICS
SURFACE FINISH63.0 MICROINCHES BOTTOM
SURFACE FINISH63.0 MICROINCHES OUTER
SURFACE FINISH63.0 MICROINCHES TOP
SURFACE TREATMENT DOCUMENT AND CLASSIFICATIONMIL-A-8625,TYPE 1 MIL SPEC SINGLE TREATMENT RESPONSE OVERALL
HEAT TREATMENTF-AS FABRICATED
STYLE DESIGNATORCONVEX
MATERIAL DOCUMENT AND CLASSIFICATIONQQ-A-250/5 FED SPEC SINGLE MATERIAL RESPONSE OR QQ-A-225/6 FED SPEC SINGLE MATERIAL RESPONSE OVERALL
OUTSIDE DIAMETER0.480 INCHES MINIMUM AND 0.490 INCHES MAXIMUM IN
MATERIAL THICKNESS0.090 INCHES MINIMUM AND 0.110 INCHES MAXIMUM IN
SURFACE TREATMENTANODIZE OVERALL
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: Normally procured from the manufacturer (OEM)No demilitarization required
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FREQUENTLY ASKED QUESTIONS
What is 369A1131?
369A1131 is a WASHER,CONVEX.
What is the NSN for 369A1131?
369A1131 is cataloged in the U.S. Government catalog under NSN 5310-00-923-3634. 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.