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566-6404304-17 — WASHER,KEY

✓ Government record, cited
— · NUT WASHER
PRODUCT OVERVIEW

566-6404304-17: WASHER,KEY.

The WASHER,KEY is a the manufacturer industrial component. Key specifications include material: NICKEL ALLOY 400 OVERALL, hole_diameter: 4.560 INCHES NOMINAL IN, outside_diameter: 6.880 INCHES NOMINAL IN, external_straight_key_width: 0.750 INCHES NOMINAL IN, overall_distance_including_keys: 8.250 INCHES NOMINAL IN, material_document_and_classification: QQ-N-281 CL A FED SPEC SINGLE MATERIAL RESPONSE OVERALL. This part is cataloged in the U.S.

Government catalog under NSN 5310-01-426-7095, 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
566-6404304-17
NSN: 5310-01-426-7095
FSC: 5310 — Nuts and Washers
CAGE: 53711 — NAVAL SEA SYSTEMS COMMAND (USA)
SPECIFICATIONS
materialNICKEL ALLOY 400 OVERALL
hole_diameter4.560 INCHES NOMINAL IN
outside_diameter6.880 INCHES NOMINAL IN
external_key_quantity7
external_straight_key_width0.750 INCHES NOMINAL IN
overall_distance_including_keys8.250 INCHES NOMINAL IN
material_document_and_classificationQQ-N-281 CL A FED SPEC SINGLE MATERIAL RESPONSE OVERALL
NSN5310-01-426-7095
COMPONENT DIAGRAM
NUT & WASHER — GRADE MATCHING REQUIRED Hex NUT CROSS-SECTION WASHER OD: — SIZE: — MATERIAL: — PN: 566-6404304-17 · 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 DISTANCE INCLUDING KEYS: 8.250 INCHES NOMINAL IN
•
MATERIAL DOCUMENT AND CLASSIFICATION: QQ-N-281 CL A FED SPEC SINGLE MATERIAL RESPONSE OVERALL
•
OUTSIDE DIAMETER: 6.880 INCHES NOMINAL IN
•
EXTERNAL STRAIGHT KEY WIDTH: 0.750 INCHES NOMINAL IN
•
EXTERNAL KEY QUANTITY: 7
•
MATERIAL: NICKEL ALLOY 400 OVERALL
•
HOLE DIAMETER: 4.560 INCHES NOMINAL IN
TECHNICAL CHARACTERISTICS
OVERALL DISTANCE INCLUDING KEYS8.250 INCHES NOMINAL IN
MATERIAL DOCUMENT AND CLASSIFICATIONQQ-N-281 CL A FED SPEC SINGLE MATERIAL RESPONSE OVERALL
OUTSIDE DIAMETER6.880 INCHES NOMINAL IN
EXTERNAL STRAIGHT KEY WIDTH0.750 INCHES NOMINAL IN
EXTERNAL KEY QUANTITY7
MATERIALNICKEL ALLOY 400 OVERALL
HOLE DIAMETER4.560 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: Normally procured from the manufacturer (OEM)No demilitarization required
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FREQUENTLY ASKED QUESTIONS
What is 566-6404304-17?
566-6404304-17 is a WASHER,KEY.
What is the NSN for 566-6404304-17?
566-6404304-17 is cataloged in the U.S. Government catalog under NSN 5310-01-426-7095. 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.