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Technical Data Sheet
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5385329 ✓ 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 1060 OR STEEL COMP 1065 OR STEEL COMP 1070 OR STEEL COMP 1075 OR STEEL COMP 1080 OVERALL, hole_diameter: 0.382 INCHES MINIMUM AND 0.398 INCHES MAXIMUM IN, hardness_rating: 45.0 ROCKWELL C MINIMUM AND 53.0 ROCKWELL C MAXIMUM, outside_diameter: 0.688 INCHES MAXIMUM IN, style_designator: SPLIT HELICAL-RIGHT HAND, surface_treatment: PHOSPHATE OVERALL. This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 5310-00-011-5093, 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
5385329
NSN: 5310-00-011-5093
FSC: 5310
CAGE: 19207 — U S ARMY TANK AUTOMOTIVE COMMAND AMSTA-IM-MM (USA)
SPECIFICATIONS
materialSTEEL COMP 1060 OR STEEL COMP 1065 OR STEEL COMP 1070 OR STEEL COMP 1075 OR STEEL COMP 1080 OVERALL
hole_diameter0.382 INCHES MINIMUM AND 0.398 INCHES MAXIMUM IN
hardness_rating45.0 ROCKWELL C MINIMUM AND 53.0 ROCKWELL C MAXIMUM
outside_diameter0.688 INCHES MAXIMUM IN
style_designatorSPLIT HELICAL-RIGHT HAND
surface_treatmentPHOSPHATE OVERALL
material_thickness0.094 INCHES NOMINAL IN
end_item_identificationMRAP RG-33; MULTIPLE LAUNCH ROCKET SYSTEM (MLRS); A4 BRADLEY FIGHTING VEHICLE; A3 BRADLEY FIGHTING VEHICLE; HIGH-MOBILITY ARTILLERY ROCKET SYSTEM (HIMARS)
nondefinitive_spec/std_dataA CLASS AND 2 STYLE
material_document_and_classificationASTMA576 ASSN STD ALL MATERIAL RESPONSES OVERALL
NSN5310-00-011-5093
COMPONENT DIAGRAM
NUT & WASHER — GRADE MATCHING REQUIRED Hex NUT CROSS-SECTION WASHER OD: — SIZE: — MATERIAL: — PN: 5385329 · 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
•
HARDNESS RATING: 45.0 ROCKWELL C MINIMUM AND 53.0 ROCKWELL C MAXIMUM
•
MATERIAL: STEEL COMP 1060 OR STEEL COMP 1065 OR STEEL COMP 1070 OR STEEL COMP 1075 OR STEEL COMP 1080 OVERALL
•
NONDEFINITIVE SPEC/STD DATA: A CLASS AND 2 STYLE
•
HOLE DIAMETER: 0.382 INCHES MINIMUM AND 0.398 INCHES MAXIMUM IN
•
OUTSIDE DIAMETER: 0.688 INCHES MAXIMUM IN
•
MATERIAL DOCUMENT AND CLASSIFICATION: ASTMA576 ASSN STD ALL MATERIAL RESPONSES OVERALL
•
MATERIAL THICKNESS: 0.094 INCHES NOMINAL IN
TECHNICAL CHARACTERISTICS (FLIS)
HARDNESS RATING45.0 ROCKWELL C MINIMUM AND 53.0 ROCKWELL C MAXIMUM
END ITEM IDENTIFICATIONMRAP RG-33; MULTIPLE LAUNCH ROCKET SYSTEM (MLRS); A4 BRADLEY FIGHTING VEHICLE; A3 BRADLEY FIGHTING VEHICLE; HIGH-MOBILITY ARTILLERY ROCKET SYSTEM (HIMARS)
MATERIALSTEEL COMP 1060 OR STEEL COMP 1065 OR STEEL COMP 1070 OR STEEL COMP 1075 OR STEEL COMP 1080 OVERALL
NONDEFINITIVE SPEC/STD DATAA CLASS AND 2 STYLE
HOLE DIAMETER0.382 INCHES MINIMUM AND 0.398 INCHES MAXIMUM IN
OUTSIDE DIAMETER0.688 INCHES MAXIMUM IN
MATERIAL DOCUMENT AND CLASSIFICATIONASTMA576 ASSN STD ALL MATERIAL RESPONSES OVERALL
MATERIAL THICKNESS0.094 INCHES NOMINAL IN
STYLE DESIGNATORSPLIT HELICAL-RIGHT HAND
SURFACE TREATMENTPHOSPHATE OVERALL
VERIFIED SUBSTITUTES & CROSS-REFERENCES 12
A109-3-5Interchangeable
interchangeable cross-reference
interchangeable
A30-184Interchangeable
interchangeable cross-reference
interchangeable
25062Interchangeable
interchangeable cross-reference
interchangeable
40300Interchangeable
interchangeable cross-reference
interchangeable
115-093Interchangeable
interchangeable cross-reference
interchangeable
10424427Interchangeable
Same NIIN cross-reference
interchangeable
LIFECYCLE
StatusCANCELLED
Availability—
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is 5385329?
5385329 is a WASHER,LOCK.
What parts can replace 5385329?
There are 12 known substitutes for 5385329: A109-3-5, A30-184, 25062 and 9 more. Substitute compatibility should be verified for your specific system.
Is 5385329 still available?
5385329 is currently cancelled.
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Last verified: July 2026