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PartsTable / COMPONENT / N418P11
N418P11 ✓ 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 0.265 INCHES MAXIMUM IN, hardness_rating: 35.0 ROCKWELL C MINIMUM AND 43.0 ROCKWELL C MAXIMUM, outside_diameter: 0.489 INCHES NOMINAL IN, style_designator: SPLIT HELICAL-RIGHT HAND, surface_treatment: PASSIVATE OVERALL. This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 5310-00-043-5862, 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
N418P11
NSN: 5310-00-043-5862
FSC: 5310
CAGE: 24446 — GENERAL ELECTRIC COMPANY (USA)
SPECIFICATIONS
materialSTEEL OVERALL
hole_diameter0.255 INCHES MINIMUM AND 0.265 INCHES MAXIMUM IN
hardness_rating35.0 ROCKWELL C MINIMUM AND 43.0 ROCKWELL C MAXIMUM
outside_diameter0.489 INCHES NOMINAL IN
style_designatorSPLIT HELICAL-RIGHT HAND
surface_treatmentPASSIVATE OVERALL
material_thickness0.047 INCHES MINIMUM AND 0.057 INCHES MAXIMUM IN
nondefinitive_spec/std_data1 STYLE AND B OR C CLASS
surface_treatment_document_and_classificationQQ-P-35 FED SPEC SINGLE TREATMENT RESPONSE OVERALL
NSN5310-00-043-5862
COMPONENT DIAGRAM
NUT & WASHER — GRADE MATCHING REQUIRED Hex NUT CROSS-SECTION WASHER OD: — SIZE: — MATERIAL: — PN: N418P11 · 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: 0.047 INCHES MINIMUM AND 0.057 INCHES MAXIMUM IN
•
OUTSIDE DIAMETER: 0.489 INCHES NOMINAL IN
•
SURFACE TREATMENT DOCUMENT AND CLASSIFICATION: QQ-P-35 FED SPEC SINGLE TREATMENT RESPONSE OVERALL
•
HOLE DIAMETER: 0.255 INCHES MINIMUM AND 0.265 INCHES MAXIMUM IN
•
HARDNESS RATING: 35.0 ROCKWELL C MINIMUM AND 43.0 ROCKWELL C MAXIMUM
•
MATERIAL: STEEL OVERALL
•
STYLE DESIGNATOR: SPLIT HELICAL-RIGHT HAND
•
SURFACE TREATMENT: PASSIVATE OVERALL
TECHNICAL CHARACTERISTICS (FLIS)
MATERIAL THICKNESS0.047 INCHES MINIMUM AND 0.057 INCHES MAXIMUM IN
OUTSIDE DIAMETER0.489 INCHES NOMINAL IN
SURFACE TREATMENT DOCUMENT AND CLASSIFICATIONQQ-P-35 FED SPEC SINGLE TREATMENT RESPONSE OVERALL
HOLE DIAMETER0.255 INCHES MINIMUM AND 0.265 INCHES MAXIMUM IN
HARDNESS RATING35.0 ROCKWELL C MINIMUM AND 43.0 ROCKWELL C MAXIMUM
MATERIALSTEEL OVERALL
STYLE DESIGNATORSPLIT HELICAL-RIGHT HAND
SURFACE TREATMENTPASSIVATE OVERALL
NONDEFINITIVE SPEC/STD DATA1 STYLE AND B OR C CLASS
VERIFIED SUBSTITUTES & CROSS-REFERENCES 12
G221439-21Interchangeable
interchangeable cross-reference
interchangeable
616938PC4Interchangeable
interchangeable cross-reference
interchangeable
12Z3018PC27Interchangeable
interchangeable cross-reference
interchangeable
5310PL1370049Interchangeable
interchangeable cross-reference
interchangeable
MS35338-139Interchangeable
interchangeable cross-reference
interchangeable
4912550-04Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusCANCELLED
Availability—
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is N418P11?
N418P11 is a WASHER,LOCK.
What parts can replace N418P11?
There are 12 known substitutes for N418P11: G221439-21, 616938PC4, 12Z3018PC27 and 9 more. Substitute compatibility should be verified for your specific system.
Is N418P11 still available?
N418P11 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