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PartsTable / COMPONENT / FFW84CLASSC
FFW84CLASSC ✓ 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,LOCK is a the manufacturer industrial component. Key specifications include material: STEEL CORROSION RESISTING OVERALL, hole_diameter: 0.221 INCHES MINIMUM AND 0.229 INCHES MAXIMUM IN, hardness_rating: 35.0 ROCKWELL C MINIMUM AND 43.0 ROCKWELL C MAXIMUM, outside_diameter: 0.438 INCHES NOMINAL IN, style_designator: SPLIT HELICAL-RIGHT HAND, material_thickness: 0.078 INCHES NOMINAL IN. This product is currently in active production with full OEM support.

This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 5310-00-262-3491, 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
FFW84CLASSC
NSN: 5310-00-262-3491
FSC: 5310
CAGE: 81348 — FEDERAL SPECIFICATIONS PROMULGATED BY GENERAL SERVICES ADMINISTRATION WASHINGTON DC (USA)
SPECIFICATIONS
materialSTEEL CORROSION RESISTING OVERALL
hole_diameter0.221 INCHES MINIMUM AND 0.229 INCHES MAXIMUM IN
hardness_rating35.0 ROCKWELL C MINIMUM AND 43.0 ROCKWELL C MAXIMUM
outside_diameter0.438 INCHES NOMINAL IN
style_designatorSPLIT HELICAL-RIGHT HAND
material_thickness0.078 INCHES NOMINAL IN
end_item_identificationMRAP RG-33; MULTIPLE LAUNCH ROCKET SYSTEM (MLRS)
nondefinitive_spec/std_dataC CLASS
specification/standard_data80205-NAS1676 PROFESSIONAL/INDUSTRIAL ASSOCIATION STANDARD
departure_from_cited_designatorAS MODIFIED BY DIM.
material_document_and_classification66 FED STD ALL MATERIAL RESPONSES OVERALL
NSN5310-00-262-3491
COMPONENT DIAGRAM
NUT & WASHER — GRADE MATCHING REQUIRED Hex NUT CROSS-SECTION WASHER OD: — SIZE: — MATERIAL: — PN: FFW84CLASSC · 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
•
OUTSIDE DIAMETER: 1.312 INCHES NOMINAL IN
•
MATERIAL: STEEL COMP 304 OVERALL
•
STYLE DESIGNATOR: SPLIT HELICAL-RIGHT HAND
•
HOLE DIAMETER: 0.763 INCHES MINIMUM AND 0.783 INCHES MAXIMUM IN
•
MATERIAL THICKNESS: 0.187 INCHES NOMINAL IN
•
MATERIAL DOCUMENT AND CLASSIFICATION: QQ-S-763,TY C FED SPEC SINGLE MATERIAL RESPONSE OVERALL
TECHNICAL CHARACTERISTICS (FLIS)
OUTSIDE DIAMETER1.312 INCHES NOMINAL IN
MATERIALSTEEL COMP 304 OVERALL
STYLE DESIGNATORSPLIT HELICAL-RIGHT HAND
HOLE DIAMETER0.763 INCHES MINIMUM AND 0.783 INCHES MAXIMUM IN
MATERIAL THICKNESS0.187 INCHES NOMINAL IN
MATERIAL DOCUMENT AND CLASSIFICATIONQQ-S-763,TY C FED SPEC SINGLE MATERIAL RESPONSE OVERALL
VERIFIED SUBSTITUTES & CROSS-REFERENCES 13
345894PC203Interchangeable
interchangeable cross-reference
interchangeable
158255PC46Interchangeable
interchangeable cross-reference
interchangeable
FFW84CLASSCInterchangeable
interchangeable cross-reference
interchangeable
345894PC204Interchangeable
interchangeable cross-reference
interchangeable
414908PC20Interchangeable
interchangeable cross-reference
interchangeable
NAS1676C416Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is FFW84CLASSC?
FFW84CLASSC is a WASHER,LOCK.
What parts can replace FFW84CLASSC?
There are 13 known substitutes for FFW84CLASSC: 345894PC203, 158255PC46, FFW84CLASSC and 10 more. Substitute compatibility should be verified for your specific system.
What is the NSN for FFW84CLASSC?
FFW84CLASSC is cataloged in the Federal Logistics Information System (FLIS) under NSN 5310-00-262-3491. This indicates validated use in U.S. government and defense supply chains.
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Last verified: July 2026