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PartsTable / COMPONENT / FC6783G
FC6783G ✓ 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: STEEL OVERALL, thickness: 0.0937 INCHES NOMINAL IN, hole_diameter: 0.265 INCHES NOMINAL IN, overall_diameter: 1.187 INCHES NOMINAL IN, surface_treatment: CADMIUM AND CHROMATE OVERALL, peripheral_shape_style: ROUND. This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 5310-00-641-9939, 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
FC6783G
NSN: 5310-00-641-9939
FSC: 5310
CAGE: 63477 — FEDERAL MOGUL CORP SUB WAGNER BRAKE MOOG AUTOMOTIVE DIV (USA)
SPECIFICATIONS
materialSTEEL OVERALL
thickness0.0937 INCHES NOMINAL IN
hole_diameter0.265 INCHES NOMINAL IN
overall_diameter1.187 INCHES NOMINAL IN
surface_treatmentCADMIUM AND CHROMATE OVERALL
peripheral_shape_styleROUND
center_hole_shape_styleROUND
cross-sectional_shape_styleRECTANGULAR
NSN5310-00-641-9939
COMPONENT DIAGRAM
NUT & WASHER — GRADE MATCHING REQUIRED Hex NUT CROSS-SECTION WASHER OD: — SIZE: — MATERIAL: — PN: FC6783G · 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
•
OVERALL DIAMETER: 1.187 INCHES NOMINAL IN
•
MATERIAL: STEEL OVERALL
•
CROSS-SECTIONAL SHAPE STYLE: RECTANGULAR
•
CENTER HOLE SHAPE STYLE: ROUND
•
PERIPHERAL SHAPE STYLE: ROUND
•
HOLE DIAMETER: 0.265 INCHES NOMINAL IN
•
SURFACE TREATMENT: CADMIUM AND CHROMATE OVERALL
•
THICKNESS: 0.0937 INCHES NOMINAL IN
TECHNICAL CHARACTERISTICS (FLIS)
OVERALL DIAMETER1.187 INCHES NOMINAL IN
MATERIALSTEEL OVERALL
CROSS-SECTIONAL SHAPE STYLERECTANGULAR
CENTER HOLE SHAPE STYLEROUND
PERIPHERAL SHAPE STYLEROUND
HOLE DIAMETER0.265 INCHES NOMINAL IN
SURFACE TREATMENTCADMIUM AND CHROMATE OVERALL
THICKNESS0.0937 INCHES NOMINAL IN
VERIFIED SUBSTITUTES & CROSS-REFERENCES 8
56436Interchangeable
interchangeable cross-reference
interchangeable
10-20395Interchangeable
interchangeable cross-reference
interchangeable
5310000120379Interchangeable
interchangeable cross-reference
interchangeable
5310PL0823235Interchangeable
Same NIIN cross-reference
interchangeable
2254388Interchangeable
Same NIIN cross-reference
interchangeable
95964HInterchangeable
Same NIIN cross-reference
interchangeable
LIFECYCLE
StatusCANCELLED
Availability—
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is FC6783G?
FC6783G is a WASHER,FLAT.
What parts can replace FC6783G?
There are 8 known substitutes for FC6783G: 56436, 10-20395, 5310000120379 and 5 more. Substitute compatibility should be verified for your specific system.
Is FC6783G still available?
FC6783G is currently cancelled.
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✓ Validated with multiple authoritative sources, including Government, OEM, and Certified sources.
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Last verified: July 2026