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SP90001 ✓ 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. This product is currently in active production with full OEM support. This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 5310-01-311-2303, 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
SP90001
NSN: 5310-01-311-2303
FSC: 5310
CAGE: Z2C27 — NIOA TRADING NIOA NOMINEES PTY LIMITED DIV NIOA (AUS)
SPECIFICATIONS
Part NumberSP90001
NSN5310-01-311-2303
COMPONENT DIAGRAM
NUT & WASHER — GRADE MATCHING REQUIRED Hex NUT CROSS-SECTION WASHER OD: — SIZE: — MATERIAL: — PN: SP90001 · 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 16
90001Interchangeable
interchangeable cross-reference
interchangeable
DA-65-S1Interchangeable
interchangeable cross-reference
interchangeable
41100H6Interchangeable
interchangeable cross-reference
interchangeable
SG-67/FPS-8Interchangeable
interchangeable cross-reference
interchangeable
U92AUInterchangeable
interchangeable cross-reference
interchangeable
5935PL1691295Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is SP90001?
SP90001 is a WASHER,LOCK.
What parts can replace SP90001?
There are 16 known substitutes for SP90001: 90001, DA-65-S1, 41100H6 and 13 more. Substitute compatibility should be verified for your specific system.
What is the NSN for SP90001?
SP90001 is cataloged in the Federal Logistics Information System (FLIS) under NSN 5310-01-311-2303. 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