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Technical Data Sheet
PartsTable / COMPONENT / N405P9B11
N405P9B11 ✓ 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 color: OLIVE DRAB OVERALL, material: STEEL OVERALL, hole_diameter: 0.194 INCHES MINIMUM AND 0.205 INCHES MAXIMUM IN, hardness_rating: 45.0 ROCKWELL C MINIMUM AND 53.0 ROCKWELL C MAXIMUM, outside_diameter: 0.323 INCHES MAXIMUM IN, style_designator: SPLIT HELICAL-RIGHT HAND. This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 5310-00-274-8710, 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
N405P9B11
NSN: 5310-00-274-8710
FSC: 5310
CAGE: 50706 — GENERAL ELECTRIC CO MOTOR BUSINESS GROUP (USA)
SPECIFICATIONS
colorOLIVE DRAB OVERALL
materialSTEEL OVERALL
hole_diameter0.194 INCHES MINIMUM AND 0.205 INCHES MAXIMUM IN
hardness_rating45.0 ROCKWELL C MINIMUM AND 53.0 ROCKWELL C MAXIMUM
outside_diameter0.323 INCHES MAXIMUM IN
style_designatorSPLIT HELICAL-RIGHT HAND
surface_treatmentZINC AND DICHROMATE OVERALL
material_thickness0.040 INCHES MINIMUM AND 0.046 INCHES MAXIMUM IN
end_item_identificationMRAP RG-33 AND RG-33 AUV
material_document_and_classification66 FED STD SINGLE MATERIAL RESPONSE OVERALL
surface_treatment_document_and_classificationMIL-P-16232 TY Z MIL SPEC SINGLE TREATMENT RESPONSE OVERALL
NSN5310-00-274-8710
COMPONENT DIAGRAM
NUT & WASHER — GRADE MATCHING REQUIRED Hex NUT CROSS-SECTION WASHER OD: — SIZE: — MATERIAL: — PN: N405P9B11 · 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
•
HARDNESS RATING: 45.0 ROCKWELL C MINIMUM AND 53.0 ROCKWELL C MAXIMUM
•
OUTSIDE DIAMETER: 0.334 INCHES MAXIMUM IN
•
MATERIAL THICKNESS: 0.047 INCHES MINIMUM AND 0.053 INCHES MAXIMUM IN
•
HOLE DIAMETER: 0.194 INCHES MINIMUM AND 0.202 INCHES MAXIMUM IN
•
SURFACE TREATMENT DOCUMENT AND CLASSIFICATION: MIL-P-16232 TY Z MIL SPEC SINGLE TREATMENT RESPONSE OVERALL
•
STYLE DESIGNATOR: SPLIT HELICAL-RIGHT HAND
•
SURFACE TREATMENT: PHOSPHATE OVERALL
TECHNICAL CHARACTERISTICS (FLIS)
HARDNESS RATING45.0 ROCKWELL C MINIMUM AND 53.0 ROCKWELL C MAXIMUM
END ITEM IDENTIFICATIONMRAP RG-33 AND RG-33 AUV
OUTSIDE DIAMETER0.334 INCHES MAXIMUM IN
MATERIAL THICKNESS0.047 INCHES MINIMUM AND 0.053 INCHES MAXIMUM IN
HOLE DIAMETER0.194 INCHES MINIMUM AND 0.202 INCHES MAXIMUM IN
SURFACE TREATMENT DOCUMENT AND CLASSIFICATIONMIL-P-16232 TY Z MIL SPEC SINGLE TREATMENT RESPONSE OVERALL
STYLE DESIGNATORSPLIT HELICAL-RIGHT HAND
SURFACE TREATMENTPHOSPHATE OVERALL
MATERIALSTEEL COMP 1060 OR STEEL COMP 1561 OR STEEL COMP 1064 OR STEEL COMP 1065 OR STEEL COMP 1566 OR STEEL COMP 1069 OR STEEL COMP 1070 OR STEEL COMP 1572 OR STEEL COMP 1074 OR STEEL COMP 1075 OR STEEL COMP 1080 OVERALL
MATERIAL DOCUMENT AND CLASSIFICATION66 FED STD SINGLE MATERIAL RESPONSE OVERALL
VERIFIED SUBSTITUTES & CROSS-REFERENCES 13
346-10010Interchangeable
interchangeable cross-reference
interchangeable
0003.0032.KInterchangeable
interchangeable cross-reference
interchangeable
AN935C10LInterchangeable
interchangeable cross-reference
interchangeable
935C10Interchangeable
interchangeable cross-reference
interchangeable
AN935-10Interchangeable
interchangeable cross-reference
interchangeable
10317949Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusCANCELLED
Availability—
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is N405P9B11?
N405P9B11 is a WASHER,LOCK.
What parts can replace N405P9B11?
There are 13 known substitutes for N405P9B11: 346-10010, 0003.0032.K, AN935C10L and 10 more. Substitute compatibility should be verified for your specific system.
Is N405P9B11 still available?
N405P9B11 is currently cancelled.
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Last verified: July 2026