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6393440-2 — WASHER,KEY

✓ Government record, cited
— · NUT WASHER
PRODUCT OVERVIEW

6393440-2: WASHER,KEY.

The WASHER,KEY is a the manufacturer industrial component. Key specifications include material: STEEL COMP 316 OVERALL, hole_diameter: 2.006 INCHES MINIMUM AND 2.026 INCHES MAXIMUM IN, outside_diameter: 2.980 INCHES MINIMUM AND 3.020 INCHES MAXIMUM IN, material_thickness: 0.224 INCHES MINIMUM AND 0.244 INCHES MAXIMUM IN, internal_prebent_key_width: 0.298 INCHES NOMINAL IN. This part is cataloged in the U.S.

Government catalog under NSN 5310-01-463-2487, 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
6393440-2
NSN: 5310-01-463-2487
FSC: 5310 — Nuts and Washers
CAGE: 53711 — NAVAL SEA SYSTEMS COMMAND (USA)
SPECIFICATIONS
materialSTEEL COMP 316 OVERALL
hole_diameter2.006 INCHES MINIMUM AND 2.026 INCHES MAXIMUM IN
outside_diameter2.980 INCHES MINIMUM AND 3.020 INCHES MAXIMUM IN
material_thickness0.224 INCHES MINIMUM AND 0.244 INCHES MAXIMUM IN
internal_prebent_key_width0.298 INCHES NOMINAL IN
NSN5310-01-463-2487
COMPONENT DIAGRAM
NUT & WASHER — GRADE MATCHING REQUIRED Hex NUT CROSS-SECTION WASHER OD: — SIZE: — MATERIAL: — PN: 6393440-2 · 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
•
INTERNAL PREBENT KEY WIDTH: 0.298 INCHES NOMINAL IN
•
OUTSIDE DIAMETER: 2.980 INCHES MINIMUM AND 3.020 INCHES MAXIMUM IN
•
MATERIAL THICKNESS: 0.224 INCHES MINIMUM AND 0.244 INCHES MAXIMUM IN
•
MATERIAL: STEEL COMP 316 OVERALL
•
HOLE DIAMETER: 2.006 INCHES MINIMUM AND 2.026 INCHES MAXIMUM IN
TECHNICAL CHARACTERISTICS
INTERNAL PREBENT KEY WIDTH0.298 INCHES NOMINAL IN
OUTSIDE DIAMETER2.980 INCHES MINIMUM AND 3.020 INCHES MAXIMUM IN
MATERIAL THICKNESS0.224 INCHES MINIMUM AND 0.244 INCHES MAXIMUM IN
MATERIALSTEEL COMP 316 OVERALL
HOLE DIAMETER2.006 INCHES MINIMUM AND 2.026 INCHES MAXIMUM 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: Normally procured from the manufacturer (OEM)No demilitarization required
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FREQUENTLY ASKED QUESTIONS
What is 6393440-2?
6393440-2 is a WASHER,KEY.
What is the NSN for 6393440-2?
6393440-2 is cataloged in the U.S. Government catalog under NSN 5310-01-463-2487. 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.