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PartsTable / COMPONENT / 10303343
10303343 ✓ 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,LOCK is a the manufacturer industrial component. Key specifications include material: STEEL OVERALL, hole_diameter: 0.255 INCHES MINIMUM AND 0.267 INCHES MAXIMUM IN, outside_diameter: 0.493 INCHES MINIMUM IN, style_designator: SPLIT HELICAL-RIGHT HAND, material_thickness: 0.062 INCHES MINIMUM AND 0.072 INCHES MAXIMUM 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 5310-00-562-6552, 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
10303343
NSN: 5310-00-562-6552
FSC: 5310
CAGE: A486G — NIMIKKEISTOKESKUS NCB FINLAND (FIN)
SPECIFICATIONS
materialSTEEL OVERALL
hole_diameter0.255 INCHES MINIMUM AND 0.267 INCHES MAXIMUM IN
outside_diameter0.493 INCHES MINIMUM IN
style_designatorSPLIT HELICAL-RIGHT HAND
material_thickness0.062 INCHES MINIMUM AND 0.072 INCHES MAXIMUM IN
NSN5310-00-562-6552
COMPONENT DIAGRAM
NUT & WASHER — GRADE MATCHING REQUIRED Hex NUT CROSS-SECTION WASHER OD: — SIZE: — MATERIAL: — PN: 10303343 · 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
•
MATERIAL: STEEL OVERALL
•
STYLE DESIGNATOR: SPLIT HELICAL-RIGHT HAND
•
OUTSIDE DIAMETER: 0.493 INCHES MINIMUM IN
•
HOLE DIAMETER: 0.255 INCHES MINIMUM AND 0.267 INCHES MAXIMUM IN
•
MATERIAL THICKNESS: 0.062 INCHES MINIMUM AND 0.072 INCHES MAXIMUM IN
TECHNICAL CHARACTERISTICS (FLIS)
MATERIALSTEEL OVERALL
STYLE DESIGNATORSPLIT HELICAL-RIGHT HAND
OUTSIDE DIAMETER0.493 INCHES MINIMUM IN
HOLE DIAMETER0.255 INCHES MINIMUM AND 0.267 INCHES MAXIMUM IN
MATERIAL THICKNESS0.062 INCHES MINIMUM AND 0.072 INCHES MAXIMUM IN
VERIFIED SUBSTITUTES & CROSS-REFERENCES 8
H20309Interchangeable
interchangeable cross-reference
interchangeable
36873Interchangeable
interchangeable cross-reference
interchangeable
S600Interchangeable
interchangeable cross-reference
interchangeable
E9163Interchangeable
interchangeable cross-reference
interchangeable
PIDSTEFC40Interchangeable
interchangeable cross-reference
interchangeable
P32G3323Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is 10303343?
10303343 is a WASHER,LOCK.
What parts can replace 10303343?
There are 8 known substitutes for 10303343: H20309, 36873, S600 and 5 more. Substitute compatibility should be verified for your specific system.
What is the NSN for 10303343?
10303343 is cataloged in the Federal Logistics Information System (FLIS) under NSN 5310-00-562-6552. 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