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PartsTable / COMPONENT / A56441C41
A56441C41 ✓ 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: 0.188 INCHES NOMINAL IN, hole_diameter: 2.469 INCHES NOMINAL IN, overall_diameter: 3.172 INCHES NOMINAL IN, peripheral_shape_style: ROUND, center_hole_shape_style: ROUND. This product is currently in active production with full OEM support.

This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 5310-00-979-5719, 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
A56441C41
NSN: 5310-00-979-5719
FSC: 5310
CAGE: 64392 — WEIL PUMP CO INC (USA)
SPECIFICATIONS
materialCOPPER ALLOY OVERALL
thickness0.188 INCHES NOMINAL IN
hole_diameter2.469 INCHES NOMINAL IN
overall_diameter3.172 INCHES NOMINAL IN
peripheral_shape_styleROUND
center_hole_shape_styleROUND
cross-sectional_shape_styleRECTANGULAR
material_document_and_classificationMIL-M-16576 MIL SPEC ALL MATERIAL RESPONSES OVERALL
NSN5310-00-979-5719
COMPONENT DIAGRAM
NUT & WASHER — GRADE MATCHING REQUIRED Hex NUT CROSS-SECTION WASHER OD: — SIZE: — MATERIAL: — PN: A56441C41 · 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
•
CROSS-SECTIONAL SHAPE STYLE: RECTANGULAR
•
MATERIAL DOCUMENT AND CLASSIFICATION: MIL-M-16576 MIL SPEC ALL MATERIAL RESPONSES OVERALL
•
MATERIAL: COPPER ALLOY OVERALL
•
OVERALL DIAMETER: 3.172 INCHES NOMINAL IN
•
THICKNESS: 0.188 INCHES NOMINAL IN
•
CENTER HOLE SHAPE STYLE: ROUND
•
PERIPHERAL SHAPE STYLE: ROUND
•
HOLE DIAMETER: 2.469 INCHES NOMINAL IN
TECHNICAL CHARACTERISTICS (FLIS)
CROSS-SECTIONAL SHAPE STYLERECTANGULAR
MATERIAL DOCUMENT AND CLASSIFICATIONMIL-M-16576 MIL SPEC ALL MATERIAL RESPONSES OVERALL
MATERIALCOPPER ALLOY OVERALL
OVERALL DIAMETER3.172 INCHES NOMINAL IN
THICKNESS0.188 INCHES NOMINAL IN
CENTER HOLE SHAPE STYLEROUND
PERIPHERAL SHAPE STYLEROUND
HOLE DIAMETER2.469 INCHES NOMINAL IN
VERIFIED SUBSTITUTES & CROSS-REFERENCES 16
353-3Interchangeable
interchangeable cross-reference
interchangeable
400104Interchangeable
interchangeable cross-reference
interchangeable
R33479ITEM137Interchangeable
interchangeable cross-reference
interchangeable
FF752PC84Interchangeable
interchangeable cross-reference
interchangeable
FF716PC84Interchangeable
interchangeable cross-reference
interchangeable
112632Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is A56441C41?
A56441C41 is a WASHER,FLAT.
What parts can replace A56441C41?
There are 16 known substitutes for A56441C41: 353-3, 400104, R33479ITEM137 and 13 more. Substitute compatibility should be verified for your specific system.
What is the NSN for A56441C41?
A56441C41 is cataloged in the Federal Logistics Information System (FLIS) under NSN 5310-00-979-5719. This indicates validated use in U.S. government and defense supply chains.
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✓ Validated with multiple authoritative sources, including Government, OEM, and Certified sources.
PartsTable Design LLC · partstable.com
Last verified: July 2026