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PartsTable / COMPONENT / 12387302-46
12387302-46 ✓ 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 OVERALL, special_features: NOMINAL SIZE 0.375 INCHES IN, end_item_identification: 2355-01-481-8573, part_name_assigned_by_controlling_agency: WASHER, LOCK. This product is currently in active production with full OEM support.

This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 5310-01-627-2821, 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
12387302-46
NSN: 5310-01-627-2821
FSC: 5310
CAGE: 19207 — U S ARMY TANK AUTOMOTIVE COMMAND AMSTA-IM-MM (USA)
SPECIFICATIONS
materialSTEEL OVERALL
special_featuresNOMINAL SIZE 0.375 INCHES IN
end_item_identification2355-01-481-8573
part_name_assigned_by_controlling_agencyWASHER, LOCK
NSN5310-01-627-2821
COMPONENT DIAGRAM
NUT & WASHER — GRADE MATCHING REQUIRED Hex NUT CROSS-SECTION WASHER OD: — SIZE: — MATERIAL: — PN: 12387302-46 · 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
TECHNICAL CHARACTERISTICS (FLIS)
SPECIAL FEATURESNOMINAL SIZE 0.375 INCHES IN
END ITEM IDENTIFICATION2355-01-481-8573
PART NAME ASSIGNED BY CONTROLLING AGENCYWASHER, LOCK
MATERIALSTEEL OVERALL
VERIFIED SUBSTITUTES & CROSS-REFERENCES 3
02010-00008Interchangeable
interchangeable cross-reference
interchangeable
12387302Interchangeable
interchangeable cross-reference
interchangeable
MS35340-45Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is 12387302-46?
12387302-46 is a WASHER,LOCK.
What parts can replace 12387302-46?
There are 3 known substitutes for 12387302-46: 02010-00008, 12387302, MS35340-45. Substitute compatibility should be verified for your specific system.
What is the NSN for 12387302-46?
12387302-46 is cataloged in the Federal Logistics Information System (FLIS) under NSN 5310-01-627-2821. This indicates validated use in U.S. government and defense supply chains.
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✓ Validated with multiple authoritative sources, including Government, OEM, and Certified sources.
PartsTable Design LLC · partstable.com
Last verified: July 2026