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Technical Data Sheet
PartsTable / COMPONENT / 97775A220
97775A220 ✓ 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 COMP 410 OVERALL, hole_diameter: 0.168 INCHES MINIMUM AND 0.176 INCHES MAXIMUM IN, outside_diameter: 0.365 INCHES MINIMUM AND 0.381 INCHES MAXIMUM IN, style_designator: FLAT EXTERNAL TEETH, surface_treatment: PASSIVATE OVERALL, material_thickness: 0.018 INCHES MINIMUM AND 0.023 INCHES MAXIMUM IN. This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 5310-00-614-3552, 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
97775A220
NSN: 5310-00-614-3552
FSC: 5310
CAGE: 39428 — MCMASTER-CARR SUPPLY CO (USA)
SPECIFICATIONS
materialSTEEL COMP 410 OVERALL
hole_diameter0.168 INCHES MINIMUM AND 0.176 INCHES MAXIMUM IN
outside_diameter0.365 INCHES MINIMUM AND 0.381 INCHES MAXIMUM IN
style_designatorFLAT EXTERNAL TEETH
surface_treatmentPASSIVATE OVERALL
material_thickness0.018 INCHES MINIMUM AND 0.023 INCHES MAXIMUM IN
end_item_identificationA4 BRADLEY FIGHTING VEHICLE; A3 BRADLEY FIGHTING VEHICLE; ARMORED MULTI-PURPOSE VEHICLE (AMPV)
material_document_and_classification66 FED STD SINGLE MATERIAL RESPONSE OVERALL
surface_treatment_document_and_classificationQQ-P-35,TY 2 OR TY 3 FED SPEC SINGLE TREATMENT RESPONSE OVERALL
NSN5310-00-614-3552
COMPONENT DIAGRAM
NUT & WASHER — GRADE MATCHING REQUIRED Hex NUT CROSS-SECTION WASHER OD: — SIZE: — MATERIAL: — PN: 97775A220 · 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
•
SURFACE TREATMENT: PASSIVATE OVERALL
•
SURFACE TREATMENT DOCUMENT AND CLASSIFICATION: QQ-P-35,TY 2 OR TY 3 FED SPEC SINGLE TREATMENT RESPONSE OVERALL
•
STYLE DESIGNATOR: FLAT EXTERNAL TEETH
•
MATERIAL: STEEL COMP 410 OVERALL
•
HOLE DIAMETER: 0.168 INCHES MINIMUM AND 0.176 INCHES MAXIMUM IN
•
MATERIAL THICKNESS: 0.018 INCHES MINIMUM AND 0.023 INCHES MAXIMUM IN
•
OUTSIDE DIAMETER: 0.365 INCHES MINIMUM AND 0.381 INCHES MAXIMUM IN
TECHNICAL CHARACTERISTICS (FLIS)
SURFACE TREATMENTPASSIVATE OVERALL
SURFACE TREATMENT DOCUMENT AND CLASSIFICATIONQQ-P-35,TY 2 OR TY 3 FED SPEC SINGLE TREATMENT RESPONSE OVERALL
END ITEM IDENTIFICATIONA4 BRADLEY FIGHTING VEHICLE; A3 BRADLEY FIGHTING VEHICLE; ARMORED MULTI-PURPOSE VEHICLE (AMPV)
STYLE DESIGNATORFLAT EXTERNAL TEETH
MATERIALSTEEL COMP 410 OVERALL
HOLE DIAMETER0.168 INCHES MINIMUM AND 0.176 INCHES MAXIMUM IN
MATERIAL THICKNESS0.018 INCHES MINIMUM AND 0.023 INCHES MAXIMUM IN
OUTSIDE DIAMETER0.365 INCHES MINIMUM AND 0.381 INCHES MAXIMUM IN
MATERIAL DOCUMENT AND CLASSIFICATION66 FED STD SINGLE MATERIAL RESPONSE OVERALL
VERIFIED SUBSTITUTES & CROSS-REFERENCES 27
122-660345 PC 30Interchangeable
interchangeable cross-reference
interchangeable
200954Interchangeable
interchangeable cross-reference
interchangeable
122-5277738 ITEM 33Interchangeable
interchangeable cross-reference
interchangeable
0490724Interchangeable
interchangeable cross-reference
interchangeable
12404Interchangeable
interchangeable cross-reference
interchangeable
310-RTInterchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusCANCELLED
Availability—
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is 97775A220?
97775A220 is a WASHER,LOCK.
What parts can replace 97775A220?
There are 27 known substitutes for 97775A220: 122-660345 PC 30, 200954, 122-5277738 ITEM 33 and 24 more. Substitute compatibility should be verified for your specific system.
Is 97775A220 still available?
97775A220 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