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PartsTable / COMPONENT / PMS91820-001-01
PMS91820-001-01 ✓ 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,SPLIT is a the manufacturer industrial component. This product is currently in active production with full OEM support. This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 5310-01-259-0298, 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
PMS91820-001-01
NSN: 5310-01-259-0298
FSC: 5310
CAGE: 18876 — US ARMY AVIATION AND MISSILE COMMAND (USA)
SPECIFICATIONS
Part NumberPMS91820-001-01
NSN5310-01-259-0298
COMPONENT DIAGRAM
NUT & WASHER — GRADE MATCHING REQUIRED Hex NUT CROSS-SECTION WASHER OD: — SIZE: — MATERIAL: — PN: PMS91820-001-01 · 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
VERIFIED SUBSTITUTES & CROSS-REFERENCES 11
N8498Interchangeable
interchangeable cross-reference
interchangeable
8373Interchangeable
interchangeable cross-reference
interchangeable
450Interchangeable
interchangeable cross-reference
interchangeable
RS1Interchangeable
interchangeable cross-reference
interchangeable
1.0SCInterchangeable
interchangeable cross-reference
interchangeable
GCT1.0Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is PMS91820-001-01?
PMS91820-001-01 is a WASHER,SPLIT.
What parts can replace PMS91820-001-01?
There are 11 known substitutes for PMS91820-001-01: N8498, 8373, 450 and 8 more. Substitute compatibility should be verified for your specific system.
What is the NSN for PMS91820-001-01?
PMS91820-001-01 is cataloged in the Federal Logistics Information System (FLIS) under NSN 5310-01-259-0298. 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