PartsTable
Technical Data Sheet
PartsTable / COMPONENT / 321108F91 PC 2
321108F91 PC 2 ✓ 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 5310-01-387-9408, 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
321108F91 PC 2
NSN: 5310-01-387-9408
FSC: 5310
CAGE: 0VP52 — FINCANTIERI MARINE SYSTEMS NORTH AMERICA, INC. DBA FINCANTIERI MARINE SYSTEMS NORTH AM (USA)
SPECIFICATIONS
Part Number321108F91 PC 2
NSN5310-01-387-9408
COMPONENT DIAGRAM
NUT & WASHER — GRADE MATCHING REQUIRED Hex NUT CROSS-SECTION WASHER OD: — SIZE: — MATERIAL: — PN: 321108F91 PC 2 · 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 14
1375-M975Interchangeable
interchangeable cross-reference
interchangeable
4-8-7Interchangeable
interchangeable cross-reference
interchangeable
1560L19-031Interchangeable
interchangeable cross-reference
interchangeable
4-87-1Interchangeable
interchangeable cross-reference
interchangeable
C10605CInterchangeable
interchangeable cross-reference
interchangeable
025-0487-000Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
Ready to buy 321108F91 PC 2?
Compare prices from verified sellers on eBay
Buy on eBay →
As an eBay Partner, PartsTable may earn a commission. Your price is not affected.
FREQUENTLY ASKED QUESTIONS
What is 321108F91 PC 2?
321108F91 PC 2 is a WASHER,LOCK.
What parts can replace 321108F91 PC 2?
There are 14 known substitutes for 321108F91 PC 2: 1375-M975, 4-8-7, 1560L19-031 and 11 more. Substitute compatibility should be verified for your specific system.
What is the NSN for 321108F91 PC 2?
321108F91 PC 2 is cataloged in the Federal Logistics Information System (FLIS) under NSN 5310-01-387-9408. This indicates validated use in U.S. government and defense supply chains.
Community Feedback
Comments (0)
No comments yet. Be the first to share what you know.
Leave a Comment
Comments are reviewed before appearing. You will receive an email to verify before your comment appears.

Request a Quote — 321108F91 PC 2

✓ Validated with multiple authoritative sources, including Government, OEM, and Certified sources.
PartsTable Design LLC · partstable.com
Last verified: July 2026