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PartsTable / COMPONENT / 21C801-002
21C801-002 ✓ 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,SADDLE is a the manufacturer industrial component. This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 5310-00-619-5280, 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
21C801-002
NSN: 5310-00-619-5280
FSC: 5310
CAGE: 04660 — AIL SYSTEMS INC SUB OF EATON CORP (USA)
SPECIFICATIONS
Part Number21C801-002
NSN5310-00-619-5280
COMPONENT DIAGRAM
NUT & WASHER — GRADE MATCHING REQUIRED Hex NUT CROSS-SECTION WASHER OD: — SIZE: — MATERIAL: — PN: 21C801-002 · 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 23
0140Interchangeable
interchangeable cross-reference
interchangeable
HPT0140Interchangeable
interchangeable cross-reference
interchangeable
H01040Interchangeable
interchangeable cross-reference
interchangeable
140-2Interchangeable
interchangeable cross-reference
interchangeable
D0UBLE474Interchangeable
interchangeable cross-reference
interchangeable
659Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusCANCELLED
Availability—
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is 21C801-002?
21C801-002 is a WASHER,SADDLE.
What parts can replace 21C801-002?
There are 23 known substitutes for 21C801-002: 0140, HPT0140, H01040 and 20 more. Substitute compatibility should be verified for your specific system.
Is 21C801-002 still available?
21C801-002 is currently cancelled.
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✓ Validated with multiple authoritative sources, including Government, OEM, and Certified sources.
PartsTable Design LLC · partstable.com
Last verified: July 2026