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N401P8C ✓ 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,FLAT is a the manufacturer industrial component. Key specifications include material: COPPER ALLOY OVERALL, thickness: 0.040 INCHES NOMINAL IN, hole_diameter: 0.188 INCHES NOMINAL IN, overall_diameter: 0.375 INCHES NOMINAL IN, surface_treatment: CADMIUM OVERALL, peripheral_shape_style: ROUND. This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 5310-00-080-9253, 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
N401P8C
NSN: 5310-00-080-9253
FSC: 5310
CAGE: 09172 — GENERAL ELECTRIC CO MATERIALS INFORMATION SERVICES (USA)
SPECIFICATIONS
materialCOPPER ALLOY OVERALL
thickness0.040 INCHES NOMINAL IN
hole_diameter0.188 INCHES NOMINAL IN
overall_diameter0.375 INCHES NOMINAL IN
surface_treatmentCADMIUM OVERALL
peripheral_shape_styleROUND
center_hole_shape_styleROUND
cross-sectional_shape_styleRECTANGULAR
NSN5310-00-080-9253
COMPONENT DIAGRAM
NUT & WASHER — GRADE MATCHING REQUIRED Hex NUT CROSS-SECTION WASHER OD: — SIZE: — MATERIAL: — PN: N401P8C · 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
•
PERIPHERAL SHAPE STYLE: ROUND
•
SURFACE TREATMENT: CADMIUM OVERALL
•
HOLE DIAMETER: 0.188 INCHES NOMINAL IN
•
CROSS-SECTIONAL SHAPE STYLE: RECTANGULAR
•
MATERIAL: COPPER ALLOY OVERALL
•
THICKNESS: 0.040 INCHES NOMINAL IN
•
OVERALL DIAMETER: 0.375 INCHES NOMINAL IN
•
CENTER HOLE SHAPE STYLE: ROUND
TECHNICAL CHARACTERISTICS (FLIS)
PERIPHERAL SHAPE STYLEROUND
SURFACE TREATMENTCADMIUM OVERALL
HOLE DIAMETER0.188 INCHES NOMINAL IN
CROSS-SECTIONAL SHAPE STYLERECTANGULAR
MATERIALCOPPER ALLOY OVERALL
THICKNESS0.040 INCHES NOMINAL IN
OVERALL DIAMETER0.375 INCHES NOMINAL IN
CENTER HOLE SHAPE STYLEROUND
VERIFIED SUBSTITUTES & CROSS-REFERENCES 17
AMS-QQ-P-416Interchangeable
interchangeable cross-reference
interchangeable
LSN62CKInterchangeable
interchangeable cross-reference
interchangeable
8437849Interchangeable
interchangeable cross-reference
interchangeable
55366Interchangeable
interchangeable cross-reference
interchangeable
MIL-S-5626CInterchangeable
interchangeable cross-reference
interchangeable
240054Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusCANCELLED
Availability—
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is N401P8C?
N401P8C is a WASHER,FLAT.
What parts can replace N401P8C?
There are 17 known substitutes for N401P8C: AMS-QQ-P-416, LSN62CK, 8437849 and 14 more. Substitute compatibility should be verified for your specific system.
Is N401P8C still available?
N401P8C is currently cancelled.
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PartsTable Design LLC · partstable.com
Last verified: July 2026