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PartsTable / COMPONENT / G210566-6
G210566-6 ✓ Verified by PartsTable
— · NUT WASHER
WHAT YOU NEED TO KNOW
Match nut grade to bolt grade for full strength Lock nuts prevent loosening under vibration
Don't mix grades — weakens the joint
PRODUCT OVERVIEW

The WASHER,KEY is a the manufacturer industrial component. Key specifications include material: STEEL COMP 304 OVERALL, hole_diameter: 0.484 INCHES MINIMUM AND 0.499 INCHES MAXIMUM IN, outside_diameter: 0.719 INCHES NOMINAL IN, style_designator: KEY, material_thickness: 0.042 INCHES NOMINAL IN, external_prebent_key_width: 0.115 INCHES NOMINAL IN. This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 5310-00-186-0960, 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
G210566-6
NSN: 5310-00-186-0960
FSC: 5310
CAGE: 23667 — SMITHS DETECTION INC. DBA SMITHS DETECTION INC CASC (USA)
SPECIFICATIONS
materialSTEEL COMP 304 OVERALL
hole_diameter0.484 INCHES MINIMUM AND 0.499 INCHES MAXIMUM IN
outside_diameter0.719 INCHES NOMINAL IN
style_designatorKEY
material_thickness0.042 INCHES NOMINAL IN
external_key_quantity9
external_prebent_key_width0.115 INCHES NOMINAL IN
internal_prebent_key_width0.109 INCHES NOMINAL IN
internal_prebent_key_length0.062 INCHES NOMINAL IN
overall_distance_including_keys1.016 INCHES NOMINAL IN
material_document_and_classification-AISI ASSN STD SINGLE MATERIAL RESPONSE OVERALL
NSN5310-00-186-0960
COMPONENT DIAGRAM
NUT & WASHER — GRADE MATCHING REQUIRED Hex NUT CROSS-SECTION WASHER OD: — SIZE: — MATERIAL: — PN: G210566-6 · 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
VERIFIED SUBSTITUTES & CROSS-REFERENCES 22
W0-1Interchangeable
interchangeable cross-reference
interchangeable
525-1Interchangeable
interchangeable cross-reference
interchangeable
611202Interchangeable
interchangeable cross-reference
interchangeable
711202Interchangeable
interchangeable cross-reference
interchangeable
13131-2PC8Interchangeable
interchangeable cross-reference
interchangeable
127681Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusCANCELLED
Availability—
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is G210566-6?
G210566-6 is a WASHER,KEY.
What parts can replace G210566-6?
There are 22 known substitutes for G210566-6: W0-1, 525-1, 611202 and 19 more. Substitute compatibility should be verified for your specific system.
Is G210566-6 still available?
G210566-6 is currently cancelled.
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✓ Validated with multiple authoritative sources, including Government, OEM, and Certified sources.
PartsTable Design LLC · partstable.com
Last verified: July 2026