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PartsTable / COMPONENT / 280039 ITEM 17
280039 ITEM 17 ✓ 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,KEY 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 5310-01-144-8799, 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
280039 ITEM 17
NSN: 5310-01-144-8799
FSC: 5310
CAGE: 99657 — MAROTTA CONTROLS INC (USA)
SPECIFICATIONS
Part Number280039 ITEM 17
NSN5310-01-144-8799
COMPONENT DIAGRAM
NUT & WASHER — GRADE MATCHING REQUIRED Hex NUT CROSS-SECTION WASHER OD: — SIZE: — MATERIAL: — PN: 280039 ITEM 17 · 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 7
1816-15Interchangeable
interchangeable cross-reference
interchangeable
1801-15Interchangeable
interchangeable cross-reference
interchangeable
10087730Interchangeable
interchangeable cross-reference
interchangeable
FF-S-85Interchangeable
interchangeable cross-reference
interchangeable
MS90725-54Interchangeable
interchangeable cross-reference
interchangeable
MDS 25-015Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is 280039 ITEM 17?
280039 ITEM 17 is a WASHER,KEY.
What parts can replace 280039 ITEM 17?
There are 7 known substitutes for 280039 ITEM 17: 1816-15, 1801-15, 10087730 and 4 more. Substitute compatibility should be verified for your specific system.
What is the NSN for 280039 ITEM 17?
280039 ITEM 17 is cataloged in the Federal Logistics Information System (FLIS) under NSN 5310-01-144-8799. 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