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PartsTable / COMPONENT / P18D3529
P18D3529 ✓ 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 OVERALL, hole_diameter: 0.406 INCHES NOMINAL IN, outside_diameter: 0.625 INCHES NOMINAL IN, style_designator: KEY, material_thickness: 0.042 INCHES NOMINAL IN, internal_prebent_key_width: 0.120 INCHES NOMINAL IN. This product is currently in active production with full OEM support.

This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 5310-00-639-3796, 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
P18D3529
NSN: 5310-00-639-3796
FSC: 5310
CAGE: 65054 — WESTINGHOUSE ELECTRIC CORP POWER GENERATION-GENERATOR DIV (USA)
SPECIFICATIONS
materialSTEEL OVERALL
hole_diameter0.406 INCHES NOMINAL IN
outside_diameter0.625 INCHES NOMINAL IN
style_designatorKEY
material_thickness0.042 INCHES NOMINAL IN
external_key_quantity9
internal_prebent_key_width0.120 INCHES NOMINAL IN
external_straight_key_width0.115 INCHES MAXIMUM IN
internal_prebent_key_length0.0625 INCHES NOMINAL IN
overall_distance_including_keys0.875 INCHES NOMINAL IN
NSN5310-00-639-3796
COMPONENT DIAGRAM
NUT & WASHER — GRADE MATCHING REQUIRED Hex NUT CROSS-SECTION WASHER OD: — SIZE: — MATERIAL: — PN: P18D3529 · 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
•
OUTSIDE DIAMETER: 0.625 INCHES NOMINAL IN
•
EXTERNAL KEY QUANTITY: 9
•
INTERNAL PREBENT KEY LENGTH: 0.0625 INCHES NOMINAL IN
•
OVERALL DISTANCE INCLUDING KEYS: 0.875 INCHES NOMINAL IN
•
MATERIAL THICKNESS: 0.042 INCHES NOMINAL IN
•
STYLE DESIGNATOR: KEY
•
INTERNAL PREBENT KEY WIDTH: 0.120 INCHES NOMINAL IN
•
EXTERNAL STRAIGHT KEY WIDTH: 0.115 INCHES MAXIMUM IN
TECHNICAL CHARACTERISTICS (FLIS)
OUTSIDE DIAMETER0.625 INCHES NOMINAL IN
EXTERNAL KEY QUANTITY9
INTERNAL PREBENT KEY LENGTH0.0625 INCHES NOMINAL IN
OVERALL DISTANCE INCLUDING KEYS0.875 INCHES NOMINAL IN
MATERIAL THICKNESS0.042 INCHES NOMINAL IN
STYLE DESIGNATORKEY
INTERNAL PREBENT KEY WIDTH0.120 INCHES NOMINAL IN
EXTERNAL STRAIGHT KEY WIDTH0.115 INCHES MAXIMUM IN
HOLE DIAMETER0.406 INCHES NOMINAL IN
MATERIALSTEEL OVERALL
VERIFIED SUBSTITUTES & CROSS-REFERENCES 13
40529Interchangeable
interchangeable cross-reference
interchangeable
T2306BInterchangeable
interchangeable cross-reference
interchangeable
T2302BInterchangeable
interchangeable cross-reference
interchangeable
42623Interchangeable
interchangeable cross-reference
interchangeable
40529-1Interchangeable
interchangeable cross-reference
interchangeable
8004Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is P18D3529?
P18D3529 is a WASHER,KEY.
What parts can replace P18D3529?
There are 13 known substitutes for P18D3529: 40529, T2306B, T2302B and 10 more. Substitute compatibility should be verified for your specific system.
What is the NSN for P18D3529?
P18D3529 is cataloged in the Federal Logistics Information System (FLIS) under NSN 5310-00-639-3796. This indicates validated use in U.S. government and defense supply chains.
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✓ Validated with multiple authoritative sources, including Government, OEM, and Certified sources.
PartsTable Design LLC · partstable.com
Last verified: July 2026