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5205820-3 — WASHER,FLAT

✓ Government record, cited
— · NUT WASHER
PRODUCT OVERVIEW

5205820-3: WASHER,FLAT.

The WASHER,FLAT is a the manufacturer industrial component. Key specifications include width: 0.032 INCHES NOMINAL IN, material: STEEL OVERALL, hole_diameter: 0.125 INCHES NOMINAL IN, overall_diameter: 0.219 INCHES NOMINAL IN, center_hole_shape_style: ROUND, part_name_assigned_by_controlling_agency: WASHER, PLAIN NUMBER 4. This part is cataloged in the U.S.

Government catalog under NSN 5310-01-725-1533, 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
5205820-3
NSN: 5310-01-725-1533
FSC: 5310 — Nuts and Washers
CAGE: 00779 — TE CONNECTIVITY CORPORATION (USA)
SPECIFICATIONS
width0.032 INCHES NOMINAL IN
materialSTEEL OVERALL
hole_diameter0.125 INCHES NOMINAL IN
overall_diameter0.219 INCHES NOMINAL IN
center_hole_shape_styleROUND
part_name_assigned_by_controlling_agencyWASHER, PLAIN NUMBER 4
NSN5310-01-725-1533
COMPONENT DIAGRAM
NUT & WASHER — GRADE MATCHING REQUIRED Hex NUT CROSS-SECTION WASHER OD: — SIZE: — MATERIAL: — PN: 5205820-3 · 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: 0.219 INCHES NOMINAL IN
•
WIDTH: 0.032 INCHES NOMINAL IN
•
MATERIAL: STEEL OVERALL
•
CENTER HOLE SHAPE STYLE: ROUND
•
HOLE DIAMETER: 0.125 INCHES NOMINAL IN
TECHNICAL CHARACTERISTICS
OVERALL DIAMETER0.219 INCHES NOMINAL IN
WIDTH0.032 INCHES NOMINAL IN
PART NAME ASSIGNED BY CONTROLLING AGENCYWASHER, PLAIN NUMBER 4
MATERIALSTEEL OVERALL
CENTER HOLE SHAPE STYLEROUND
HOLE DIAMETER0.125 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 1
5310901329Same NSN cross-reference
Same NSN cross-reference
Also cataloged under this NSN
LIFECYCLE
NSN statusActive· U.S. Government catalog
No demilitarization required
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FREQUENTLY ASKED QUESTIONS
What is 5205820-3?
5205820-3 is a WASHER,FLAT.
What parts can replace 5205820-3?
There is 1 known substitute for 5205820-3: 5310901329. Substitute compatibility should be verified for your specific system.
What is the NSN for 5205820-3?
5205820-3 is cataloged in the U.S. Government catalog under NSN 5310-01-725-1533. 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.