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31084R1 ✓ 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

NUT,PLAIN,EXTENDED WASHER,HEXAGO. This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 5310-01-512-6142, 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
31084R1
NSN: 5310-01-512-6142
FSC: 5310
CAGE: 338X5 — ND DEFENSE LLC (USA)
SPECIFICATIONS
Part Number31084R1
NSN5310-01-512-6142
COMPONENT DIAGRAM
NUT & WASHER — GRADE MATCHING REQUIRED Hex NUT CROSS-SECTION WASHER OD: — SIZE: — MATERIAL: — PN: 31084R1 · 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 17
ESP-EM-3.104-PPInterchangeable
interchangeable cross-reference
interchangeable
90702Interchangeable
interchangeable cross-reference
interchangeable
4381765Interchangeable
interchangeable cross-reference
interchangeable
3306721Interchangeable
interchangeable cross-reference
interchangeable
90700Interchangeable
interchangeable cross-reference
interchangeable
31081R1Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusCANCELLED
Availability—
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is 31084R1?
31084R1 is a NUT,PLAIN,EXTENDED WASHER,HEXAGO.
What parts can replace 31084R1?
There are 17 known substitutes for 31084R1: ESP-EM-3.104-PP, 90702, 4381765 and 14 more. Substitute compatibility should be verified for your specific system.
Is 31084R1 still available?
31084R1 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