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FC654 ✓ 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,SLOTTED is a the manufacturer industrial component. Key specifications include material: STEEL OVERALL, hole_diameter: 0.755 INCHES NOMINAL IN, outside_diameter: 1.188 INCHES NOMINAL IN, style_designator: SLOTTED, surface_treatment: PHOSPHATE OVERALL, material_thickness: 0.250 INCHES NOMINAL IN. This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 5310-00-393-6404, 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
FC654
NSN: 5310-00-393-6404
FSC: 5310
CAGE: 63477 — FEDERAL MOGUL CORP SUB WAGNER BRAKE MOOG AUTOMOTIVE DIV (USA)
SPECIFICATIONS
materialSTEEL OVERALL
hole_diameter0.755 INCHES NOMINAL IN
outside_diameter1.188 INCHES NOMINAL IN
style_designatorSLOTTED
surface_treatmentPHOSPHATE OVERALL
material_thickness0.250 INCHES NOMINAL IN
NSN5310-00-393-6404
COMPONENT DIAGRAM
NUT & WASHER — GRADE MATCHING REQUIRED Hex NUT CROSS-SECTION WASHER OD: — SIZE: — MATERIAL: — PN: FC654 · 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
•
MATERIAL: STEEL OVERALL
•
HOLE DIAMETER: 0.755 INCHES NOMINAL IN
•
MATERIAL THICKNESS: 0.250 INCHES NOMINAL IN
•
SURFACE TREATMENT: PHOSPHATE OVERALL
•
STYLE DESIGNATOR: SLOTTED
•
OUTSIDE DIAMETER: 1.188 INCHES NOMINAL IN
TECHNICAL CHARACTERISTICS (FLIS)
MATERIALSTEEL OVERALL
HOLE DIAMETER0.755 INCHES NOMINAL IN
MATERIAL THICKNESS0.250 INCHES NOMINAL IN
SURFACE TREATMENTPHOSPHATE OVERALL
STYLE DESIGNATORSLOTTED
OUTSIDE DIAMETER1.188 INCHES NOMINAL IN
VERIFIED SUBSTITUTES & CROSS-REFERENCES 16
D317Interchangeable
interchangeable cross-reference
interchangeable
77607Interchangeable
interchangeable cross-reference
interchangeable
268219-7Interchangeable
interchangeable cross-reference
interchangeable
34644Interchangeable
interchangeable cross-reference
interchangeable
T45AInterchangeable
interchangeable cross-reference
interchangeable
T45Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusCANCELLED
Availability—
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is FC654?
FC654 is a WASHER,SLOTTED.
What parts can replace FC654?
There are 16 known substitutes for FC654: D317, 77607, 268219-7 and 13 more. Substitute compatibility should be verified for your specific system.
Is FC654 still available?
FC654 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