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421-4-25224-000 — WASHER,CONVEX

✓ Government record, cited
— · NUT WASHER
PRODUCT OVERVIEW

421-4-25224-000: WASHER,CONVEX.

The WASHER,CONVEX is a the manufacturer industrial component. Key specifications include material: STEEL OVERALL, hole_diameter: 7.2 MILLIMETERS NOMINAL MM, outside_diameter: 12.8 MILLIMETERS NOMINAL MM, style_designator: CONVEX, surface_treatment: PHOSPHATE OVERALL, material_thickness: 0.170 MILLIMETERS MINIMUM AND 0.220 MILLIMETERS MAXIMUM MM. This part is cataloged in the U.S.

Government catalog under NSN 5310-01-362-2116, 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
421-4-25224-000
NSN: 5310-01-362-2116
FSC: 5310 — Nuts and Washers
CAGE: 99207 — GENERAL ELECTRIC COMPANY DBA GE AEROSPACE (USA)
SPECIFICATIONS
materialSTEEL OVERALL
hole_diameter7.2 MILLIMETERS NOMINAL MM
outside_diameter12.8 MILLIMETERS NOMINAL MM
style_designatorCONVEX
surface_treatmentPHOSPHATE OVERALL
material_thickness0.170 MILLIMETERS MINIMUM AND 0.220 MILLIMETERS MAXIMUM MM
part_name_assigned_by_controlling_agencyNAVY SPECIAL PROJECT
NSN5310-01-362-2116
COMPONENT DIAGRAM
NUT & WASHER — GRADE MATCHING REQUIRED Hex NUT CROSS-SECTION WASHER OD: — SIZE: — MATERIAL: — PN: 421-4-25224-000 · 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: 12.8 MILLIMETERS NOMINAL MM
•
MATERIAL THICKNESS: 0.170 MILLIMETERS MINIMUM AND 0.220 MILLIMETERS MAXIMUM MM
•
SURFACE TREATMENT: PHOSPHATE OVERALL
•
MATERIAL: STEEL OVERALL
•
HOLE DIAMETER: 7.2 MILLIMETERS NOMINAL MM
TECHNICAL CHARACTERISTICS
STYLE DESIGNATORCONVEX
OUTSIDE DIAMETER12.8 MILLIMETERS NOMINAL MM
MATERIAL THICKNESS0.170 MILLIMETERS MINIMUM AND 0.220 MILLIMETERS MAXIMUM MM
SURFACE TREATMENTPHOSPHATE OVERALL
PART NAME ASSIGNED BY CONTROLLING AGENCYNAVY SPECIAL PROJECT
MATERIALSTEEL OVERALL
HOLE DIAMETER7.2 MILLIMETERS NOMINAL MM
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 421-4-25224-000?
421-4-25224-000 is a WASHER,CONVEX.
What is the NSN for 421-4-25224-000?
421-4-25224-000 is cataloged in the U.S. Government catalog under NSN 5310-01-362-2116. 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.