PartsTable
Technical Data Sheet
12Z3018-25 ✓ 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 hole_diameter: 0.194 INCHES MINIMUM AND 0.205 INCHES MAXIMUM IN, hardness_rating: 35.0 ROCKWELL C MINIMUM AND 43.0 ROCKWELL C MAXIMUM, outside_diameter: 0.323 INCHES MAXIMUM IN, style_designator: SPLIT HELICAL-RIGHT HAND, material_thickness: 0.040 INCHES MINIMUM IN, nondefinitive_spec/std_data: C CLASS AND 1 STYLE. This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 5310-00-209-1235, 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
12Z3018-25
NSN: 5310-00-209-1235
FSC: 5310
CAGE: 10001 — NAVAIR AND NAVSEA MANAGED ORIGINAL DESIGN ACTIVITY DWG NOT MATERIAL/PARTS SUPPLIER (USA)
SPECIFICATIONS
hole_diameter0.194 INCHES MINIMUM AND 0.205 INCHES MAXIMUM IN
hardness_rating35.0 ROCKWELL C MINIMUM AND 43.0 ROCKWELL C MAXIMUM
outside_diameter0.323 INCHES MAXIMUM IN
style_designatorSPLIT HELICAL-RIGHT HAND
material_thickness0.040 INCHES MINIMUM IN
nondefinitive_spec/std_dataC CLASS AND 1 STYLE
material_document_and_classification66 FED STD ALL MATERIAL RESPONSES OVERALL
NSN5310-00-209-1235
COMPONENT DIAGRAM
NUT & WASHER — GRADE MATCHING REQUIRED Hex NUT CROSS-SECTION WASHER OD: — SIZE: — MATERIAL: — PN: 12Z3018-25 · 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
NONDEFINITIVE SPEC/STD DATA: C CLASS AND 1 STYLE
STYLE DESIGNATOR: SPLIT HELICAL-RIGHT HAND
MATERIAL: STEEL COMP 301 OR STEEL COMP 302 OR STEEL COMP 303 OR STEEL COMP 303SE OR STEEL COMP 304 OR STEEL COMP 304L OR STEEL COMP 305 OR STEEL COMP 308 OR STEEL COMP 309 OR STEEL COMP 309S OR STEEL COMP 310 OR STEEL COMP 310S OR STEEL COMP 314 OR STEEL COMP 316 OR STEEL COMP 316L OR STEEL COMP 317 OR STEEL COMP 321 OR STEEL COMP 347 OR STEEL COMP 348 OR STEEL COMP 385 OR STEEL COMP 384 OVERALL
MATERIAL DOCUMENT AND CLASSIFICATION: 66 FED STD ALL MATERIAL RESPONSES OVERALL
HARDNESS RATING: 35.0 ROCKWELL C MINIMUM AND 43.0 ROCKWELL C MAXIMUM
HOLE DIAMETER: 0.194 INCHES MINIMUM AND 0.205 INCHES MAXIMUM IN
OUTSIDE DIAMETER: 0.323 INCHES MAXIMUM IN
MATERIAL THICKNESS: 0.040 INCHES MINIMUM IN
TECHNICAL CHARACTERISTICS (FLIS)
NONDEFINITIVE SPEC/STD DATAC CLASS AND 1 STYLE
STYLE DESIGNATORSPLIT HELICAL-RIGHT HAND
MATERIALSTEEL COMP 301 OR STEEL COMP 302 OR STEEL COMP 303 OR STEEL COMP 303SE OR STEEL COMP 304 OR STEEL COMP 304L OR STEEL COMP 305 OR STEEL COMP 308 OR STEEL COMP 309 OR STEEL COMP 309S OR STEEL COMP 310 OR STEEL COMP 310S OR STEEL COMP 314 OR STEEL COMP 316 OR STEEL COMP 316L OR STEEL COMP 317 OR STEEL COMP 321 OR STEEL COMP 347 OR STEEL COMP 348 OR STEEL COMP 385 OR STEEL COMP 384 OVERALL
MATERIAL DOCUMENT AND CLASSIFICATION66 FED STD ALL MATERIAL RESPONSES OVERALL
HARDNESS RATING35.0 ROCKWELL C MINIMUM AND 43.0 ROCKWELL C MAXIMUM
HOLE DIAMETER0.194 INCHES MINIMUM AND 0.205 INCHES MAXIMUM IN
OUTSIDE DIAMETER0.323 INCHES MAXIMUM IN
MATERIAL THICKNESS0.040 INCHES MINIMUM IN
VERIFIED SUBSTITUTES & CROSS-REFERENCES 13
3-035X020Interchangeable
interchangeable cross-reference
interchangeable
9157798-54Interchangeable
interchangeable cross-reference
interchangeable
5006-3Interchangeable
interchangeable cross-reference
interchangeable
G221439-21Interchangeable
interchangeable cross-reference
interchangeable
616938PC4Interchangeable
interchangeable cross-reference
interchangeable
12Z3018PC27Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusCANCELLED
Availability
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is 12Z3018-25?
12Z3018-25 is a WASHER,LOCK.
What parts can replace 12Z3018-25?
There are 13 known substitutes for 12Z3018-25: 3-035X020, 9157798-54, 5006-3 and 10 more. Substitute compatibility should be verified for your specific system.
Is 12Z3018-25 still available?
12Z3018-25 is currently cancelled.
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