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PartsTable / COMPONENT / 12Z3010-218
12Z3010-218 ✓ 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: COPPER ALLOY OVERALL, hole_diameter: 0.195 INCHES MINIMUM AND 0.204 INCHES MAXIMUM IN, outside_diameter: 0.300 INCHES MINIMUM AND 0.311 INCHES MAXIMUM IN, style_designator: SPLIT HELICAL-RIGHT HAND, material_thickness: 0.016 INCHES NOMINAL IN. This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 5310-00-551-0231, 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
12Z3010-218
NSN: 5310-00-551-0231
FSC: 5310
CAGE: 94135 — NAVAL ORDNANCE STANDARDS (USA)
SPECIFICATIONS
materialCOPPER ALLOY OVERALL
hole_diameter0.195 INCHES MINIMUM AND 0.204 INCHES MAXIMUM IN
outside_diameter0.300 INCHES MINIMUM AND 0.311 INCHES MAXIMUM IN
style_designatorSPLIT HELICAL-RIGHT HAND
material_thickness0.016 INCHES NOMINAL IN
NSN5310-00-551-0231
COMPONENT DIAGRAM
NUT & WASHER — GRADE MATCHING REQUIRED Hex NUT CROSS-SECTION WASHER OD: — SIZE: — MATERIAL: — PN: 12Z3010-218 · 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 THICKNESS: 0.016 INCHES NOMINAL IN
•
STYLE DESIGNATOR: SPLIT HELICAL-RIGHT HAND
•
HOLE DIAMETER: 0.195 INCHES MINIMUM AND 0.204 INCHES MAXIMUM IN
•
MATERIAL: COPPER ALLOY OVERALL
•
OUTSIDE DIAMETER: 0.300 INCHES MINIMUM AND 0.311 INCHES MAXIMUM IN
TECHNICAL CHARACTERISTICS (FLIS)
MATERIAL THICKNESS0.016 INCHES NOMINAL IN
STYLE DESIGNATORSPLIT HELICAL-RIGHT HAND
HOLE DIAMETER0.195 INCHES MINIMUM AND 0.204 INCHES MAXIMUM IN
MATERIALCOPPER ALLOY OVERALL
OUTSIDE DIAMETER0.300 INCHES MINIMUM AND 0.311 INCHES MAXIMUM IN
VERIFIED SUBSTITUTES & CROSS-REFERENCES 5
327019Interchangeable
interchangeable cross-reference
interchangeable
173513Interchangeable
interchangeable cross-reference
interchangeable
191006Interchangeable
interchangeable cross-reference
interchangeable
HS4232Interchangeable
interchangeable cross-reference
interchangeable
HS4232-2Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusCANCELLED
Availability—
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is 12Z3010-218?
12Z3010-218 is a WASHER,LOCK.
What parts can replace 12Z3010-218?
There are 5 known substitutes for 12Z3010-218: 327019, 173513, 191006 and 2 more. Substitute compatibility should be verified for your specific system.
Is 12Z3010-218 still available?
12Z3010-218 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