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GE1021 ✓ 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 style_designator: SPLIT HELICAL-RIGHT HAND, end_item_identification: MRAP - COMMON NSN - USED ON MAXXPRO CAT I AND 2 OTHER WEAPON SYSTEMS. This product is currently in active production with full OEM support.

This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 5310-01-244-8944, 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
GE1021
NSN: 5310-01-244-8944
FSC: 5310
CAGE: 0SAT8 — KOMATSU AMERICA CORP. (USA)
SPECIFICATIONS
style_designatorSPLIT HELICAL-RIGHT HAND
end_item_identificationMRAP - COMMON NSN - USED ON MAXXPRO CAT I AND 2 OTHER WEAPON SYSTEMS
NSN5310-01-244-8944
COMPONENT DIAGRAM
NUT & WASHER — GRADE MATCHING REQUIRED Hex NUT CROSS-SECTION WASHER OD: — SIZE: — MATERIAL: — PN: GE1021 · 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
•
STYLE DESIGNATOR: SPLIT HELICAL-RIGHT HAND
TECHNICAL CHARACTERISTICS (FLIS)
STYLE DESIGNATORSPLIT HELICAL-RIGHT HAND
END ITEM IDENTIFICATIONMRAP - COMMON NSN - USED ON MAXXPRO CAT I AND 2 OTHER WEAPON SYSTEMS
VERIFIED SUBSTITUTES & CROSS-REFERENCES 16
N405P42BInterchangeable
interchangeable cross-reference
interchangeable
4E05Interchangeable
interchangeable cross-reference
interchangeable
5118-53-6Interchangeable
interchangeable cross-reference
interchangeable
SM-B-379821Interchangeable
interchangeable cross-reference
interchangeable
12021-4Interchangeable
interchangeable cross-reference
interchangeable
103-0012-019Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is GE1021?
GE1021 is a WASHER,LOCK.
What parts can replace GE1021?
There are 16 known substitutes for GE1021: N405P42B, 4E05, 5118-53-6 and 13 more. Substitute compatibility should be verified for your specific system.
What is the NSN for GE1021?
GE1021 is cataloged in the Federal Logistics Information System (FLIS) under NSN 5310-01-244-8944. 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