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A73541-209 ✓ 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 715 OVERALL, thickness: 0.065 INCHES NOMINAL IN, overall_diameter: 5.106 INCHES MINIMUM AND 5.116 INCHES MAXIMUM IN, peripheral_shape_style: ROUND, material_document_and_classification: MIL-C-15726 COMP 70-30 MIL SPEC SINGLE MATERIAL RESPONSE OVERALL. This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 5310-01-154-0362, 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
A73541-209
NSN: 5310-01-154-0362
FSC: 5310
CAGE: 26337 — PARKER-HANNIFIN CORPORATION DIV HYDRAULIC ACCUMULATOR DIVISION (USA)
SPECIFICATIONS
materialCOPPER ALLOY 715 OVERALL
thickness0.065 INCHES NOMINAL IN
overall_diameter5.106 INCHES MINIMUM AND 5.116 INCHES MAXIMUM IN
peripheral_shape_styleROUND
material_document_and_classificationMIL-C-15726 COMP 70-30 MIL SPEC SINGLE MATERIAL RESPONSE OVERALL
NSN5310-01-154-0362
COMPONENT DIAGRAM
NUT & WASHER — GRADE MATCHING REQUIRED Hex NUT CROSS-SECTION WASHER OD: — SIZE: — MATERIAL: — PN: A73541-209 · 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
•
MATERIAL DOCUMENT AND CLASSIFICATION: MIL-C-15726 COMP 70-30 MIL SPEC SINGLE MATERIAL RESPONSE OVERALL
•
MATERIAL: COPPER ALLOY 715 OVERALL
•
OVERALL DIAMETER: 5.106 INCHES MINIMUM AND 5.116 INCHES MAXIMUM IN
•
THICKNESS: 0.065 INCHES NOMINAL IN
TECHNICAL CHARACTERISTICS (FLIS)
PERIPHERAL SHAPE STYLEROUND
MATERIAL DOCUMENT AND CLASSIFICATIONMIL-C-15726 COMP 70-30 MIL SPEC SINGLE MATERIAL RESPONSE OVERALL
MATERIALCOPPER ALLOY 715 OVERALL
OVERALL DIAMETER5.106 INCHES MINIMUM AND 5.116 INCHES MAXIMUM IN
THICKNESS0.065 INCHES NOMINAL IN
VERIFIED SUBSTITUTES & CROSS-REFERENCES 6
10087995Interchangeable
interchangeable cross-reference
interchangeable
AN310-4Interchangeable
interchangeable cross-reference
interchangeable
N5338302305Interchangeable
interchangeable cross-reference
interchangeable
714399-001Interchangeable
interchangeable cross-reference
interchangeable
401101Interchangeable
interchangeable cross-reference
interchangeable
SW30465Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusCANCELLED
Availability—
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is A73541-209?
A73541-209 is a WASHER,FLAT.
What parts can replace A73541-209?
There are 6 known substitutes for A73541-209: 10087995, AN310-4, N5338302305 and 3 more. Substitute compatibility should be verified for your specific system.
Is A73541-209 still available?
A73541-209 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