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Technical Data Sheet
PartsTable / COMPONENT / N405P8C
N405P8C ✓ 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: 0.168 INCHES MINIMUM AND 0.178 INCHES MAXIMUM IN, hardness_rating: 45.0 ROCKWELL C MINIMUM AND 53.0 ROCKWELL C MAXIMUM, outside_diameter: 0.280 INCHES MAXIMUM IN, special_features: FREE OF MERCURY CONTAMINATION, style_designator: SPLIT HELICAL-RIGHT HAND, surface_treatment: CADMIUM OVERALL. This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 5310-00-013-1182, 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
N405P8C
NSN: 5310-00-013-1182
FSC: 5310
CAGE: 03538 — LOCKHEED MARTIN CORPORATION DIV RMS (USA)
SPECIFICATIONS
hole_diameter0.168 INCHES MINIMUM AND 0.178 INCHES MAXIMUM IN
hardness_rating45.0 ROCKWELL C MINIMUM AND 53.0 ROCKWELL C MAXIMUM
outside_diameter0.280 INCHES MAXIMUM IN
special_featuresFREE OF MERCURY CONTAMINATION
style_designatorSPLIT HELICAL-RIGHT HAND
surface_treatmentCADMIUM OVERALL
material_thickness0.031 INCHES MINIMUM AND 0.037 INCHES MAXIMUM IN
special_test_featuresSPECIAL QUALITY CONTROL TESTING
nondefinitive_spec/std_dataA CLASS AND 1 STYLE
specification/standard_data81348-FF-W-84 GOVERNMENT SPECIFICATION AND 96906-MS35337/CANCELED/ GOVERNMENT STANDARD AND 24617-131182 MANUFACTURERS STANDARD
departure_from_cited_documentAS DIFFERENTIATED BY MATERIAL WHICH MUST CONFORM TO SHIPS PARTS CONTROL CENTER SPECIAL QUALITY CONTROL PROVISIONS
criticality_code_justificationZZZW
NSN5310-00-013-1182
COMPONENT DIAGRAM
NUT & WASHER — GRADE MATCHING REQUIRED Hex NUT CROSS-SECTION WASHER OD: — SIZE: — MATERIAL: — PN: N405P8C · 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
•
SURFACE TREATMENT: CADMIUM AND CHROMATE OR ZINC AND CHROMATE OVERALL
•
SPECIFICATION/STANDARD DATA: 81348-FF-W-84 GOVERNMENT SPECIFICATION AND 96906-MS35337/CANCELED/ GOVERNMENT STANDARD AND 24617-131182 MANUFACTURERS STANDARD
•
DEPARTURE FROM CITED DOCUMENT: FF-W-84,PARAGRAPH 3.3.1 CADMIUM PLATING OR PARAGRAPH 3.3.2 ZINC COATING
•
MATERIAL: STEEL COMP 1060 OR STEEL COMP 1080 OVERALL
•
SURFACE TREATMENT DOCUMENT AND CLASSIFICATION: QQ-P-416,TYPE 2,CLASS 3 FED SPEC 1ST TREATMENT RESPONSE OR QQ-Z-325,TYPE 2,CLASS 3 FED SPEC 2ND TREATMENT RESPONSE OVERALL
•
HARDNESS RATING: 45.0 ROCKWELL C MINIMUM AND 53.0 ROCKWELL C MAXIMUM
•
HOLE DIAMETER: 0.168 INCHES MINIMUM AND 0.178 INCHES MAXIMUM IN
•
MATERIAL THICKNESS: 0.031 INCHES MINIMUM AND 0.037 INCHES MAXIMUM IN
TECHNICAL CHARACTERISTICS (FLIS)
SURFACE TREATMENTCADMIUM AND CHROMATE OR ZINC AND CHROMATE OVERALL
SPECIFICATION/STANDARD DATA81348-FF-W-84 GOVERNMENT SPECIFICATION AND 96906-MS35337/CANCELED/ GOVERNMENT STANDARD AND 24617-131182 MANUFACTURERS STANDARD
DEPARTURE FROM CITED DOCUMENTFF-W-84,PARAGRAPH 3.3.1 CADMIUM PLATING OR PARAGRAPH 3.3.2 ZINC COATING
MATERIALSTEEL COMP 1060 OR STEEL COMP 1080 OVERALL
SURFACE TREATMENT DOCUMENT AND CLASSIFICATIONQQ-P-416,TYPE 2,CLASS 3 FED SPEC 1ST TREATMENT RESPONSE OR QQ-Z-325,TYPE 2,CLASS 3 FED SPEC 2ND TREATMENT RESPONSE OVERALL
HARDNESS RATING45.0 ROCKWELL C MINIMUM AND 53.0 ROCKWELL C MAXIMUM
HOLE DIAMETER0.168 INCHES MINIMUM AND 0.178 INCHES MAXIMUM IN
MATERIAL THICKNESS0.031 INCHES MINIMUM AND 0.037 INCHES MAXIMUM IN
MATERIAL DOCUMENT AND CLASSIFICATION66,UNS G10600 THRU UNS G10800 FED STD ALL MATERIAL RESPONSES OVERALL
OUTSIDE DIAMETER0.280 INCHES MAXIMUM IN
VERIFIED SUBSTITUTES & CROSS-REFERENCES 19
5310PL0145204Interchangeable
interchangeable cross-reference
interchangeable
2300042Interchangeable
interchangeable cross-reference
interchangeable
453299Interchangeable
interchangeable cross-reference
interchangeable
PS078-0500CRPA022Interchangeable
interchangeable cross-reference
interchangeable
107001-1107Interchangeable
interchangeable cross-reference
interchangeable
13605-1Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusCANCELLED
Availability—
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is N405P8C?
N405P8C is a WASHER,LOCK.
What parts can replace N405P8C?
There are 19 known substitutes for N405P8C: 5310PL0145204, 2300042, 453299 and 16 more. Substitute compatibility should be verified for your specific system.
Is N405P8C still available?
N405P8C 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