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R8611506-53 ✓ 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 PIN,STRAIGHT,HEADLESS 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 5315-01-685-1718, 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
R8611506-53
NSN: 5315-01-685-1718
FSC: 5315
CAGE: 96169 — ELECTRIC BOAT CORPORATION DIV GENERAL DYNAMICS ELECTRIC BOAT (USA)
SPECIFICATIONS
Part NumberR8611506-53
NSN5315-01-685-1718
COMPONENT DIAGRAM
NUT & WASHER — GRADE MATCHING REQUIRED Hex NUT CROSS-SECTION WASHER OD: — SIZE: — MATERIAL: — PN: R8611506-53 · 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 22
218085990Interchangeable
interchangeable cross-reference
interchangeable
721-8541924-29Interchangeable
interchangeable cross-reference
interchangeable
R8611509-29Interchangeable
interchangeable cross-reference
interchangeable
721-8541924Interchangeable
interchangeable cross-reference
interchangeable
721-8541924-5Interchangeable
interchangeable cross-reference
interchangeable
60-23-9968AInterchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is R8611506-53?
R8611506-53 is a PIN,STRAIGHT,HEADLESS.
What parts can replace R8611506-53?
There are 22 known substitutes for R8611506-53: 218085990, 721-8541924-29, R8611509-29 and 19 more. Substitute compatibility should be verified for your specific system.
What is the NSN for R8611506-53?
R8611506-53 is cataloged in the Federal Logistics Information System (FLIS) under NSN 5315-01-685-1718. 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