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Technical Data Sheet
PartsTable / COMPONENT / 2493779
2493779 ✓ 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 BLOCK AND PISTON ASSEMBLY is a the manufacturer industrial component. Key specifications include end_item_identification: ENGINE MODEL F404-GE-400. This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 5310-00-365-0206, 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
2493779
NSN: 5310-00-365-0206
FSC: 5310
CAGE: 10001 — NAVAIR AND NAVSEA MANAGED ORIGINAL DESIGN ACTIVITY DWG NOT MATERIAL/PARTS SUPPLIER (USA)
SPECIFICATIONS
end_item_identificationENGINE MODEL F404-GE-400
NSN5310-00-365-0206
COMPONENT DIAGRAM
NUT & WASHER — GRADE MATCHING REQUIRED Hex NUT CROSS-SECTION WASHER OD: — SIZE: — MATERIAL: — PN: 2493779 · 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
•
MATING MEMBER DIAMETER ACCOMMODATED: 0.495 INCHES MINIMUM AND 0.505 INCHES MAXIMUM IN
•
MATERIAL DOCUMENT AND CLASSIFICATION: FED STD 66,AISI/SAE 1065 FED STD SINGLE MATERIAL RESPONSE OVERALL
•
MATERIAL THICKNESS: 0.015 INCHES NOMINAL IN
•
NUT STYLE: PUSH ON
•
NUT DIAMETER: 0.826 INCHES NOMINAL IN
•
MATERIAL: STEEL OVERALL
TECHNICAL CHARACTERISTICS (FLIS)
MATING MEMBER DIAMETER ACCOMMODATED0.495 INCHES MINIMUM AND 0.505 INCHES MAXIMUM IN
MATERIAL DOCUMENT AND CLASSIFICATIONFED STD 66,AISI/SAE 1065 FED STD SINGLE MATERIAL RESPONSE OVERALL
MATERIAL THICKNESS0.015 INCHES NOMINAL IN
NUT STYLEPUSH ON
NUT DIAMETER0.826 INCHES NOMINAL IN
MATERIALSTEEL OVERALL
VERIFIED SUBSTITUTES & CROSS-REFERENCES 14
RA30NASD102AInterchangeable
interchangeable cross-reference
interchangeable
MIL-R-19/3Interchangeable
interchangeable cross-reference
interchangeable
511550Interchangeable
interchangeable cross-reference
interchangeable
41710Interchangeable
interchangeable cross-reference
interchangeable
926H95Interchangeable
interchangeable cross-reference
interchangeable
906J826-15Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusCANCELLED
Availability—
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is 2493779?
2493779 is a BLOCK AND PISTON ASSEMBLY.
What parts can replace 2493779?
There are 14 known substitutes for 2493779: RA30NASD102A, MIL-R-19/3, 511550 and 11 more. Substitute compatibility should be verified for your specific system.
Is 2493779 still available?
2493779 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